Rohde and Schwarz TMU925 UHF DTV ATSC 1KW TO 2.5 KW TRANSMITTER FAMILY User Manual Part 2

Rohde & Schwarz Inc UHF DTV ATSC 1KW TO 2.5 KW TRANSMITTER FAMILY Part 2

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User Manual Part 2

Transmitter System R&S TMU9

R&S® TMU9

58System Manual 2600.5423.02 ─ 01

trays. When routing in solid cable ducts, use the next largest cable cross-sections and

fuse ratings.

The fuse ratings apply for a maximum ambient temperature of 25 °C and a minimum

undervoltage of 197 V AC.

Series fuses and cable cross-sections for a 3-phase power supply

For a 230/400 V AC, 50 Hz power supply with L1, L2, L3, N, and PE, the following infor-

mation applies:

Number of amplifiers Series fuse pH gG Cable cross-section

1 3 x 40 A 5 x 6 mm2

2 3 x 40 A 5 x 6 mm2

3 3 x 40 A 5 x 6 mm2

4 3 x 40 A 5 x 6 mm2

5 3 x 40 A 5 x 6 mm2

6 3 x 40 A 5 x 6 mm2

Series fuses and cable cross-sections for a 1-phase power supply

For a 230 V AC, 50 Hz power supply with L1, N, and PE, the following information applies:

Number of amplifiers Series fuse NH gG Cable cross-section

1 3 x 40 A 3 x 6 mm2

2 3 x 40 A 3 x 6 mm2

3 3 x 50 A 3 x 10 mm2

1. Run a power input cable of sufficient length to the series fuse.

2. Connect the cable to the series fuse.

3. Loosen the clamping screws at the strain relief (item 1 in the following figure).

4. Run a cable from the series fuse through the strain relief to the power input terminal

X1 (item 3).

5. Remove the protective covers (item 2), open the respective terminals using a size 3

flat-head screwdriver, and connect the wires using the cable and terminal designa-

tions.

6. Check that the wires are secure and put the protective covers (item 2) back on.

7. Tighten the clamping screws of the strain relief.

8. Fasten the transparent protective cover to the rear of the mains distribution unit.

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Fig. 3-13: Connecting the Power Input Cable

1 = Strain relief

2 = Protective covers

3 = Power input terminal X1

3.2.7 Installing the RF output

The output to the main antenna is an EIA connector. It is on the left-hand side of the

transmitter roof, next to the directional coupler and connection panel.

3.2.7.1 Connecting the Antenna

Connect the antenna as follows, depending on the transmitter type:

►Fasten the coaxial cable, which is preassembled to the station, to the EIA flange of

the transmitter's RF output. To prevent the screw connection from loosening, secure

it using a plain washer and spring lock washer.

● Use 4 screws M8, 35 mm (for EIA 1 5/8")

In regions with high humidity, the supplied rubber ring can be inserted into the groove

between the two EIA flanges.

3.2.7.2 Connecting the Dummy Antenna

The dummy antenna is connected only when putting the system into operation or for

maintenance and repair purposes.

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R&S® TMU9

60System Manual 2600.5423.02 ─ 01

With some dummy antennas that have coolant monitoring and overtemperature moni-

toring, the monitoring equipment can be connected to the transmitter. The main RF carrier

loop X41.1 and X41.2 on the CAN bus adapter or exciter switch can be used here as a

temporary measure (e.g. while the unit is being put into operation).

1. To connect the main RF carrier loop, use the inserted jumper plug and remove the

jumper.

2. Connect the monitoring cable in place of the jumper.

If you are using an RF patch panel that allows you to switch between the antenna and

dummy antenna by means of an RF bridging link (permanent installation), attach the

dummy antenna monitoring unit to the standby RF carrier loop (X41.1 and X41.2 with

CAN bus adapter, X41.3 and X41.4 with exciter switch). For more details, see chap-

ter 3.2.9, "Installing the RF Loop", on page 62.

3.2.8 Installing R&S TCE900 Customer Interfaces

The various versions of the TCE900 are already integrated into the rack with the delivery

of a transmitter. Installation is limited to wiring at the device's customer interfaces. Which

cables need to be connected depends on the transmitter configuration, the device version

and the custom requirements.

The cables used to provide ASI, 10MHz, PPS and GPS signals, should be double shiel-

ded.

IP and Ethernet connections should use class CAT6 cables should be used.

Please refer to the system circuit diagram for the system wiring applicable to your system.

The following steps are required to install a R&S TCE900.

1. Insert the R&S TCE900 into the TCE pull‑out frame without canting it (only one run-

ner) and carefully push the unit back to the front stop.

2. Fasten the R&S TCE900 to the TCE pull‑out frame using the two knurled screws.

3. Connect the cable in accordance with the wiring diagram and target designation.

4. Complete the TCE pull‑out frame with the front panel

a) To connect the Tx Control or Exciter A (for single drive) and TSP, plug the control

cable into the mini USB socket on the TSP900.

b) Hook the eyelets on the rear of the front panel into the hooks on the TCE pull-out

frame and press the front panel down as far as it will go.

c) Retighten the front panel to the sides of the TCE pull-out frame using four screws

(size 20 Torx screwdriver).

5. Slide the TCE pull-out frame into the rack.

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R&S® TMU9

61System Manual 2600.5423.02 ─ 01

a) Push the left safety lever outwards and press one of the two right safety levers

downwards.

Fig. 3-14: Releasing the safety lever (left side).

1 = Push the safety lever outward and hold it

Fig. 3-15: Releasing the safety lever (right side).

2 = Press down and hold the first safety lever

3 = Push the TCE pull-out unit toward the rack

4 = Push the second safety lever downwards, hold it, and push the TCE pull-out unit in all the way

b) First hold the two safety levers in this position and press the TCE pull-out frame

toward the rack, until the safety lever retains its position on its own.

c) Also push the second safety lever on the right side downwards now and slide the

TCE pull-out unit into the rack.

d) Retighten the four captive screws on the TCE pull-out frame.

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3.2.9 Installing the RF Loop

3.2.9.1 Single Drive (CAN Bus Adapter)

A RF loop plug is plugged onto the CAN bus adapter (in the system component frame)

that may have to be wired depending on whether or not the RF loop is used.

Fig. 3-16: RF loop plug X41 (LOOP), open and bypassed

1 = Pin 1

2 = Pin 2

Risk of RF Burns

Interruptions to the RF sector during operation can lead to arc flashes and severe burns

including shock that result from them. Before putting the transmitter into operation, ensure

that the available RF interlock systems are connected correctly.

The RF loop is not used

► Bridge pins 1 and 2 on RF loop plug X41 (LOOP) using a jumper.

The RF loop is used

► Loop pins 1 and 2 from plug X41 (LOOP) into the RF loop connections coming from

the RF sector (RF switch, switchover panel, etc.).

Installation R&S TMU9

Transmitter System R&S TMU9

R&S® TMU9

63System Manual 2600.5423.02 ─ 01

3.2.9.2 Dual Drive (RF Switch)

A RF loop plug is plugged onto the RF switch (in the system component frame) that may

have to be wired depending on whether or not the RF loop is used.

Fig. 3-17: RF loop plug X41 (LOOP) - RF Switch

Risk of RF Burns

Interruptions to the RF sector during operation can lead to arc flashes and severe burns

including shock that result from them. Before putting the transmitter into operation, ensure

that the available RF interlock systems are connected correctly.

In case of Dual Drive, the RF loop of the standby exciter is always bypassed via the exciter

switch.

This is not valid for Dual Drive with active dual output stage.

The external RF loop is only used for the active exciter.

3.2.10 Installing the TM9-C1 Exhaust Kit

The following modules and components of the cooling system or exhaust kit are preas-

sembled at the factory:

●Air Cooling Interface ACIF as rackmount in the R&S TCE900-SystemControl unit

●Exhaust air transfer duct (item 1 in the following figure) on the rear part of the trans-

mitter roof

●Fans E1 and E2 in the rear door of the transmitter rack

●Pressure sensors S1 and S2 in the rear door of the transmitter rack

●Temperature sensors B1 and B2 in the rear door of the transmitter rack

The rear door with the preassembled components is delivered in separate packaging.

The following steps are required:

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R&S® TMU9

64System Manual 2600.5423.02 ─ 01

1. Unpack the rear door and hang it on the door hinges (item 2 in the following figure)

on the rear side of the rack.

2. Connect the potential equalization cable on the threaded bolt of the door (item 3) and

on the left wall of the rack (Torx screw)

Fig. 3-18: Exhaust Kit, Rear door of transmitter rack

1 = Exhaust air transfer duct, top

2 = Connection of temperature sensor B2

3 = Connection of potential equalization cable (Torx screw)

3. Attach the connecting cables for E1, E2, S1, S2, B1, and B2 to the connection panel

at the bottom of the left wall of the rack as followed.

● Power cable W.1N for fan E1 to X.1N

●Control cable W.E1 for fan E1 to X.E1

● Connection cable W.S1 for pressure sensor S1 to X.S1

● Power cable W.2N for fan E2 to X.2N

● Control cable W.E2 for fan E2 to X.E2

● Connection cable W.S2 for pressure sensor S2 to X.S2

● Connection cable W.B2 for temperature sensor B2 to X.B2

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R&S® TMU9

65System Manual 2600.5423.02 ─ 01

Fig. 3-19: Connection panel for exhaust kit.

1 = Power supply for fan E1 (X.1N)

2 = Connection of control line of Fan E1 (X.E1)

3 = Connection of pressure sensor S1 (X.S1)

4 = Power supply for fan E2 (X.2N)

5 = Connection of control line of Fan E2 (X.E2)

6 = Connection of pressure sensor S2 (X.S2)

3.3 Commissioning R&S TMU9

Commissioning of the transmitter system is described in the following document.

R&S THU9/TMU9 Transmitter System Operating Manual, Mat. No. 2109.9110.02

Commissioning R&S TMU9

Transmitter System R&S TMU9

R&S® TMU9

66System Manual 2600.5423.02 ─ 01

Commissioning R&S TMU9

Exciter/Transmitter Control R&S TCE900

R&S® TMU9

67System Manual 2600.5423.02 ─ 01

4 Exciter/Transmitter Control R&S TCE900

4.1 Design and Function R&S TCE900

4.1.1 R&S TCE900 General Design

The R&S TCE900 consists of a base module and various plug-in modules that enable

the following versions of the R&S TCE900.

●R&S TCE900 SystemControl (TCE900 SysCtrl)

●R&S TCE900 Exciter (TCE900 Exc)

R&S TCE900

The basic R&S TCE900 unit is the same for all versions and consists of the following

modules:

●Processor board (IPS1)

The IPS1 processing unit has the following properties:

–1.6 GHz INTEL ATOM N processor

– 2 GB RAM

–CR2032 (3 V) battery for supplying the realtime clock with power in the event of

a power failure.

– Linux-based R&S TCE900 software

A 4GB flash disk is located on the processor board; the operating system and all of

the system settings are saved on it.

The following interfaces are on the rear of the IPS1 unit:

– 2 x USB 2.0 for connecting external devices (mouse, keyboard, USB stick)

– 1 x Gigabit Ethernet 1000BaseT for externally controlling the R&S TCE900 via

SNMP, VNC or remote desktop

– 1 x DVI-D for connecting an external DVI-D monitor

The IPS1 board also provides internal interfaces (via internal system connector #1).

– 3 x PCIe 1.0a, Port A is used in the R&S TCE900 for exchanging data (TS or IP)

between the option module and the computer. The other two PCIe interfaces are

not used.

Furthermore, there are additional internal interfaces for special applications:

– 1 x SATA, interface (not used)

– 1 x +5 V, hard disk power supply (not used)

– 1 x mSATA socket for a 4GB flash disk (with operating system and system set-

tings)

●System connection board (SCB)

Design and Function R&S TCE900

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The system connection board is the central board of the R&S TCE900 with a con-

nection socket to the IPS1 processing unit (X17). The connector plugs for the back-

plane (X50, X51) are opposite the IPS1 connection socket.

The system connection board provides the following functions:

– The +12 V open-circuit voltage of the power supply is connected to the system

connection board via the X1, X2 and X3 interfaces. All modules of the R&S

TCE900 are supplied with a voltage of 12 V from there.

– FPGA D34 with PCIe interface for the IPS1 processing unit. This is used for

transferring central control tasks, e.g. fan control.

– PCIe switch D28 for distributing one IPS1 PCIe lane to the 5 modular units on the

backplane.

– USB hub D42 for distributing one IPS1 USB channel to the 5 modular units on

the backplane.

– Smart card adapter X12 with USB interface for managing options.

– Ethernet switch D25 for additional network interfaces in the instrument.

– GPS receiver K1 with USB interface. The antenna signals travel from the external

SMA input socket, "GPS ANT", to the GPS receiver via a cable. The GPS receiver

generates an internal 1 pps signal for monitoring DVB-T SFN networks.

●Power supply

●Fans

R&S TCE900 SysCtrl

Fig. 4-1: R&S TCE900 Control - rear view

1 = Tx interface

2 = Cooling Interface / Air Cooling Interface

3 = Ethernet switch (opt. for N+1 systems)

In addition to the basic unit, the R&S TCE900 SysCtrl contains the following plug-in mod-

ules:

●Tx interface

The TxIF in the R&S TCE900 is used as an interface from the IPS1 processor board

to the mains distribution unit and in specific systems to control an RF switch and to

monitor a switch-over panel. Additionally, there is an ethernet switch available, which

is used for the commumication to the exciters.

The TxIF is connected to the backplane via connection X100 (90-pin Airmax con-

nector).

The following connections are located on the rear panel:

– X44: Interface for the mains distribution unit (15-pin)

– X40-X43: 4 Ethernet interfaces (Gbit) for connecting the transmitter system's

devices

– X45: Interface to the RF switch and to a specific patch panel (15-pin)

●Air cooling interface (ACIF)

The air cooling interface is an optional card for the R&S TCE900.

Design and Function R&S TCE900

Exciter/Transmitter Control R&S TCE900

R&S® TMU9

69System Manual 2600.5423.02 ─ 01

For a medium-power transmitter, the connection from the exhaust kit to the trans-

mitter's control unit is established via the air cooling interface. This can be used to

control 2 fans independently of each other using a 0 V to 10 V voltage signal. Simul-

taneously, 2 tachometer signals from the fans can be evaluated to determine their

speed.

Two differential pressure sensors (1) are used to measure the pressure inside the

frame enclosure with reference to the outside air pressure. Through the ACIF of the

R&S TCE900, the RPM of the two fans (2) are regulated with the aim of maintaining

normal air pressure within the enclosed frame.

Two examples for controlling of the normal air pressure in the rack:

– For example, when the temperature of the air fed to the transmitter rises, the RPM

of the amplifier cooling fan will increase accordingly in order to adequately cool

the amplifier. As a result, the pressure within the enclosed frame will increase

and the ACIF will increase the RPM of the fans in the exhaust kit.

– When the temperature of the air fed to the transmitter decreases, the RPM of the

amplifier cooling fan will decrease. As a result, the pressure within the enclosed

frame will decrease and also the RPM of the fans in the exhaust kit.

During the initial commissioning of the system, a fallback RPM setting is configured.

This setting ensures that adequate cooling of the transmitter is ensured, even if the

ACIF goes off-line.

The air cooling interface is connected to the R&S TCE900 via USB on the backplane.

In addition to this, interrupt lines are also provided, which run as a signal line

(IRQSCB_OX, GPIO_OPTX_3) from the air cooling interface to the SCB/IPS1 and

run as feedback lines (GPIO_OPTX_4, F0_1PPSSCB_OX) from the IPS1/SCB to the

air cooling interface.

The plug position of the air cooling interface can be determined in the R&S TCE900

using SLOT_IDX.

●LAN switch

Additional Ethernet connections are provided using a LAN switch.

In addition, connections for the R&S TDU900 display unit and additional external instru-

ments (e.g. parallel remote control interface) are located here.

R&S TCE900 Exc

Fig. 4-2: R&S TCE900 Exciter - rear view

1 = RF Board

2 = Coder board

In addition to the basic unit, the R&S TCE900 Exc contains the following plug-in modules:

●Coder board

The coder board in the R&S TCE900 is used for the transport stream's (TS) baseband

coding. Depending on the standard in use, there are different models distinguished

by how the FPGAs are equipped.

The coder board is connected to the backplane using three Airmax connectors, X1

(90-pin), X2 (90-pin) and X3 (54-pin).

Design and Function R&S TCE900

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The following connections are located on the rear panel:

– X30/X31: Ethernet interface for TS via LAN

– X20/X21: BNC connections for TS via ASI

–X22: BNC connection for TS monitoring output

– X23: BNC connection for feeding in an external 1 pps pulse

– X24: BNC connection for outputting a reference signal (1 pps or 10 MHz)

●RF board

The RF board in the R&S TCE900 fulfills the following functions:

– Converting baseband data from digital to analog and converting modulation to

the final frequency (forward path).

– Adaptive precorrection and signal analysis of the baseband data extracted this

way (backward path).

– Central creation and distribution of the system cycle.

The RF board is connected to the backplane via connection X10 (90-pin Airmax con-

nector) and receives the digital baseband data from the coder over this connection.

JTAG interface X2 is provided for diagnostic purposes.

The following connections are located on the rear panel:

– X60: RF output (QMA)

– X61: RF output monitor (SMA)

– X64: Input for reference frequency (BNC)

– X67/X68 RF traceability for precorrection (QMA)

A GPS receiver can also be activated.

The general block diagram for the R&S TCE900 unit is below.

Design and Function R&S TCE900

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Fig. 4-3: R&S TCE900 block diagram

4.1.2 R&S TCE900 Functions

The individual versions of the R&S TCE900 perform the following functions:

R&S TCE900 SysCtrl

The R&S TCE900 SysCtrl takes over communications with the outside world and pro-

vides the connection to the R&S R&S TDU900.

R&S TCE900 Exc

The R&S TCE900 Exc takes over the tasks of an exciter, processes the data transport

stream and encodes the extracted data packets. The DTV signal is then precorrected,

modulated to the transmission frequency and forwarded to the transmitter output stage.

Design and Function R&S TCE900

Exciter/Transmitter Control R&S TCE900

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Design and Function R&S TCE900

Amplifier R&S PMU901

R&S® TMU9

73System Manual 2600.5423.02 ─ 01

5 Amplifier R&S PMU901

5.1 Design and Function R&S PMU901

5.1.1 Device Purpose and Overview

The R&S PMU901 amplifier is a broadband unit that operates as a power amplifier in the

frequency range from 470 MHz to 862 MHz with the following TV standards:

●digital (DTV) standards: DVB‑T/H, DVB‑T2, ATSC, ATSC Mobil, ISDBTB

●analog (ATV) standards: ATVc (combined) B/G, D/K, K1, M/N, I, I1

It is based on the BLF888 transistor from NXP. The entire RF circuitry is on the A2 module

(amplifier board).

Broadband and Doherty mode (DTV only)

Apart from conventional broadband mode, the amplifier can also be operated according

to the Doherty principle in order to considerably improve AC efficiency (approx. 35 %).

Whereas the amplifier in the classic operating mode (as a linear amplifier with class AB

output stage) operates as a broadband unit without the need for adjustment across the

entire UHF range at AC efficiency levels around 25 %, the amplifier in Doherty mode is

band‑limited at efficiency levels > 35 %.

The operating mode of the amplifier is set using a tuning unit ("tunit") which can be

accessed from outside and is part of the top cover. With the tunit in its normal installation

position, the R&S PMU901 operates in AB mode as a conventional broadband linear

amplifier with 6 parallel‑connected BLF888 units. When turned through 180°, the tunit

allows the output stage to operate according to the Doherty principle. Three BLF888 units

then serve as the main amplifier and three as the auxiliary amplifier of the 6 dB Doherty

system. The tuning of the tunit now determines the available frequency range. There are

seven fixed tuning ranges or tunit variants for the entire UHF band (470 MHz to 862 MHz).

One tuning range covers up to 12 channels.

This special patented architecture of the R&S PMU901 means that the amplifier itself

actually remains invariant. Different variants do not need to be made available as replace-

ment parts. Every amplifier can be used in every transmitter. If a (Doherty) amplifier needs

to be replaced, the tunit is pulled out of the amplifier to be replaced and then inserted into

the replacement amplifier. If the frequency of the entire transmitter has to be changed

(very rare), only the tunits have to be changed (not necessary in all cases). If in doubt,

the amplifiers of a transmitter can of course always be configured to conventional broad-

band mode by turning the tunit. This operating mode is indispensable, especially in the

case of replacement transmitters in N+1 systems.

A control word is used to inform the amplifier control board of the installation position of

the tunit and therefore the operating mode. In Doherty mode, the control word also

informs the amplifier control board of the tuning range. If the tunit does not match the

Design and Function R&S PMU901

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frequency of the transmitter or the wrong operating mode is configured, the amplifier

remains switched off and signals FREQ_FAIL.

Control and monitoring

The amplifier is operated via the transmitter control unit only. Module A1 (amplifier control

board), which operates independently of power and frequency band and is also used in

other TX9 amplifiers, is responsible for the monitoring and control functions as well as

CAN bus connection. The interface for the amplifier control board is largely compatible

with the VH8xxx amplifiers. This means that the amplifier can be operated using the

control unit from the 8000 family and outside of the transmitter for test purposes using

the GT800A1 test box.

Power supply

The amplifier has a 3 kW power supply unit (regular power supply unit 1) which delivers

both the amplifier operating voltage and the 15 V auxiliary voltage. As an option, an

identical power supply unit can be parallel‑connected as an active standby. Both power

supply units can be replaced without the amplifier needing to be switched off or removed

from the transmitter. The standby power supply unit can be assigned to a separate phase

on the system side. The permissible mains voltage range of the amplifier is 170 V to

264 V AC.

At reduced output powers, the efficiency of the amplifier can be optimized by reducing

the DC voltage of the power supply.

5.1.2 Mechanical Design

The amplifier is fully enclosed in a 19" metal housing. The height of the cabinet is 3.5 HU

(156 mm). The housing consists of a mounting frame, top cover, front cover and rear

panel. The two fans are attached to the rear panel. At the center of the housing is the

amplifier board, under which is the heat sink and under that the power supply unit with

power adaptor board.

After the mains voltage has been disconnected (after the pre‑trip has been switched off),

the amplifier can be removed from the rack without disconnecting any connectors while

the transmitter is still in operation (self-engaging plug‑in connections).

Although the R&S PMU901 amplifier is normally used in combination with a transmitter

rack, it can also be operated as a stand‑alone desktop unit together with the R&S TCE900

exciter.

Modules

The amplifier consists of the following modules:

●A1: Amplifier control board

●A2: Amplifier board

●A3, A4: Power supply 1, power supply 2 (standby, optional)

●A5: Tunit (tuning unit)

Design and Function R&S PMU901

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●A6, A7: Adaptor board 1, adaptor board 2 (standby)

The entire amplifier unit is on the top side of the amplifier.

Fig. 5-1: Amplifier board

–

A2 (top cover removed)

1 = Preamplifier

2 = Driver amplifier

3 = Output stage with 6 transistors

4 = Amplifier control board – A1

5 = RF detectors

6 = Tunit – A5 (here in normal installation position for broadband mode)

7 = Fan 1

8 = Fan 2

One or two power supply units are in the lower part of the amplifier behind the front cover.

Design and Function R&S PMU901

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Fig. 5-2: Power supply unit and heat sink (front cover removed)

1 = Fins of heat sink

2 = Power supply 1 – A3

3 = Installation compartment for power supply 2 – A4 (option)

One or two power adaptor boards are on the underside of the amplifier behind the PAB

cover.

Fig. 5-3: Power adaptor board (cover removed)

1 = Power adaptor board 1 – A6

2 = Installation location for power adaptor board 2 – A7 (option)

3 = Fan 1

4 = Fan 2

Cooling

The amplifier is cooled by a high‑performance copper heat sink and two dedicated ampli-

fier fans. The cooling system features the following:

●The amplifier circuitry is cooled by means of thermal conduction to the heat sink which

dissipates heat to the flow of cooling air inside the amplifier (no additional fans are

used).

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●The power supply unit has its own heat sink which also dissipates heat from the power

supply unit to the flow of cooling air inside the amplifier.

●Part of the cooling air also flows through the power supply unit circuitry in order to

cool the components.

Tunit

The installation position of the tuning unit ("tunit") determines whether the two groups of

three identical output‑stage transistors are parallel‑connected to form a classic broad-

band amplifier or whether they form a Doherty system with a main and auxiliary amplifier.

●With the tunit in its normal installation position ("B‑Mode" on the top cover), the

amplifier functions as a conventional linear amplifier with 6 parallel‑connected out-

put‑stage transistors in AB mode. It thus operates as a broadband unit without the

need for adjustment across the entire UHF range.

●When turned through 180° ("D‑Mode" on the top cover), the tunit allows the output

stage to operate according to the Doherty principle. Three output‑stage transistors

then serve as the main amplifier and three as the auxiliary amplifier of the 6 dB Doh-

erty system. In this operating mode, the two tuning elements of the tunit determine

the operating frequency(-ies) of the amplifier. They are indicated on the tunit label

and are only valid for as long as the calibration sticker is undamaged.

The tunit is inserted from above into the cover of the amplifier section in the amplifier. It

is therefore only accessible when the amplifier has been removed from the transmitter.

The amplifier must be switched off before the tunit is removed! Removal while the ampli-

fier is still in operation can result in the transistors being irreparably damaged.

5.1.3 Display Elements and Interfaces

5.1.3.1 LEDs and Test Point – Front Panel

The following LEDs for indicating states and faults are on the front panel:

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

78System Manual 2600.5423.02 ─ 01

Name No. Signaling Meaning

AMPLIFIER ON H1 LED, green The LED lights up when the

amplifier is ready for operation,

i.e. the supply voltage is present

and the transmitter is in opera-

tion.

LINK H2 LED, green Amplifier communication with the

BUS.

●Flashing rapidly: No master

●Flashing slowly: Not opera-

tional but communication

link present

●Permanently lit: Normal

communication

●OFF: Processor is not being

supplied with power (no

V_AUX)

RF IN FAIL H3 LED, yellow The LED lights up if the RF input

level (X10) is below the preset

threshold.

MUTE H4 LED, yellow The RF output signal (X1) is sup-

pressed (caused by the

SHUT_DOWN command, if the

external power combiner over-

heats, with the RF_IN_FAIL mes-

sage or with the RF_MUTE sig-

nal).

REFLECTION H5 LED, yellow The LED lights up if the reflection

at the RF output exceeds a

threshold. The message is stored

in a nonvolatile memory in the

amplifier and can be reset at the

transmitter control unit (Reset).

RF POWER FAIL H6 LED, red The LED lights up if the RF output

power is below half (-3 dB) of the

nominal value.

TEMP FAIL H7 LED, red The LED lights up in the case of

overtemperature in the amplifier

unit. The message is stored in a

nonvolatile memory in the CAN

controller and can be reset at the

transmitter control unit (Reset).

The output power is suppressed

for as long as overtemperature

exists.

TRANSISTOR FAIL H8 LED, red The LED lights up if a transistor

fails in the output stage or driver.

FAN FAIL H9 LED, yellow The LED lights up if one or more

fans fail.

Indication of other operating states:

●H6 – H8 flash

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

79System Manual 2600.5423.02 ─ 01

A problem has occurred during initialization. Certain hardware conditions are not ful-

filled, e.g.:

– Internal operating voltages are missing.

– The tunit installed in the transmitter does not correspond to that expected by the

transmitter (returned FREQ_ID).

– No FREQ_ID has yet been returned by the transmitter.

●H3 – H5 chaser light

Bias adjustment is active (duration: approx. 2 min.).

●H1 to H8 flash for 10 s

The command to detect an amplifier has been activated

The generated status displays and measurement values are shown in the GUI of the

transmitter control unit (R&S TDU900).

Front RF test connector

At the RF MONITOR test point (X3, SMA socket), part of the output signal from the

amplifier circuitry is output via a directional coupler (1 V test point). This allows evaluation

of the signal quality downstream of the amplifier.

The coupling attenuation of the RF MONITOR test point has a frequency response of

-6 dB per octave. The attenuation at 650 MHz is stored and can be queried via the trans-

mitter control unit. The level at X3 changes slightly (approx. 0.1 dB) if a connection is

disconnected or connected at X13 (ADE OUT, rear panel).

5.1.3.2 Connectors – Rear Panel

The following connectors are on the rear panel of the amplifier:

●X1 – Mains voltage feed for 1 or 2 power supply units

●X2 – HF output RF OUT(7/16 female connector)

●X10 – HF input RF IN(SMA female connector)

●X11 – AMPLIFIER CONTROL interface to the amplifier control board with integrated

connection to the CAN bus (D‑Sub male connector, 15‑contact)

●X13 – Second ADE OUT RF test connector for connecting the ADE demodulator for

automatic digital precorrection upstream of the channel bandpass filter (with 1 ampli-

fier in the transmitter; SMA female connector)

●X22, X23 – Connection for fan 1 and fan 2 (Molex male connector)

●3 connection possibilities for the additional PE conductor (a second PE conductor is

always required!)

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

80System Manual 2600.5423.02 ─ 01

Fig. 5-4: Rear panel of R&S PMU901 with connections for a second PE conductor

1 = Threaded hole (M6) for screwing on a ground cable with cable lug (alternative to 3)

2 = Multilam female connector for self‑engaging connection of second PE conductor in transmitter rack

3 = Ground bolt (M5) for connection of second PE conductor at test station

Amplifier control

All control functions in the TX9 transmitters are executed by means of CAN commands

via the X11 interface.

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

81System Manual 2600.5423.02 ─ 01

5.1.4 Circuit Descriptions

5.1.4.1 Block Diagram

Fig. 5-5: Block diagram of R&S PMU901

5.1.4.2 Signal Gain in Preamplifier and Driver

The entire signal gain process takes place on the amplifier board (module A2). It goes

though the following steps in the preamplifier and driver.

●The RF input signal passes from the amplifier input X10 on the rear panel of the

instrument along the RF line W10 and into the preamplifier, which is under an

RF‑shielded cover.

●In the preamplifier, the signal passes through the following components in sequence:

– Amplitude regulator

– Small‑signal amplifier

– Phase regulator

●This is followed by an LDMOS transistor stage (BLF642, single‑ended, A mode) as

a preliminary driver.

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

82System Manual 2600.5423.02 ─ 01

●The signal leaves the preamplifier and is fed to the input of the driver amplifier via the

cable W145x. This input consists of two single‑ended LDMOS transistor stages which

are interconnected by means of 90° jumpers. The two transistor halves of the

BLF888B push‑pull transistor are used for this purpose.

●The cable W145x is also used for phase adjustment (in the case of design modifica-

tions or for tolerance adjustment). It connects the connectors X301 and X400.

●The output signal of the driver is fed to the output‑stage splitter via a harmonic filter.

This filter is used especially at low frequencies to suppress the first harmonic.

The cable W145x must not be removed and should only be replaced with a cable with

the same R&S part number. Failure to observe this point can result in destruction of

absorbers of the power combiner in the transmitter (if more than one amplifier is installed).

5.1.4.3 Signal Gain in Doherty-Capable Output Stage

The output stage is divided into two groups, each with three transistors. In Doherty mode,

one group forms the main amplifier (3 x BLF888B) and the other forms the auxiliary

amplifier (3 x BLF888A). If the two groups have equal priority, however, they can also

form a conventional output stage.

The following steps take place in the output stage:

●The output signal of the driver is fed via a 90° splitter to two output‑stage groups each

with three transistors.

●The two power streams are divided between the three transistors of each out-

put‑stage group via a 0° splitter. The output‑stage group which forms the main ampli-

fier in Doherty mode uses BLF888B transistors, and the output‑stage group for the

auxiliary amplifier uses BLF888A transistors.

●Two 0° combiners combine each group of three partial power streams and make them

available at the inputs of a 2‑way power combiner ready for addition.

●The tunit connected at the power combiner determines the operating mode of the

amplifier:

– Conventional broadband AB mode in the normal installation position

– Doherty mode if the tunit is turned through 180°

●Directional couplers upstream of the RF output of the amplifier (downstream of the

2‑way power combiner) detect forward and reflected power. Their signals are fed to

RF detectors. A further directional coupler provides two free decoupled RF test points

(RF MONITOR, ADE OUT) via a small splitter.

The operating points of the transistors of the main and auxiliary amplifier can be set

separately. In Doherty mode, the main amplifier operates in AB mode and the auxiliary

amplifier in C mode. When the amplifier operates as a conventional broadband amplifier,

all of its output‑stage transistors operate in AB mode.

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

83System Manual 2600.5423.02 ─ 01

5.1.4.4 Power Control

To ensure that the required power is always present at the amplifier output, the level

tolerances at the following points are adjusted by means of a power control circuit.

●at the amplifier output

●at the entire RF amplifier stage

During power control, a control amplifier which is on the amplifier board (module A2,

preamplifier section) is supplied with an actual voltage and a nominal voltage. The nom-

inal voltage is the VREF_PWR signal which is fed as a CAN command and is used to

adjust the output power.

Intelligent control brake

In the case of the R&S PMU901 with the special output‑stage architecture necessary for

the Doherty operating mode, it is not possible to apply the control principle with transis-

tor‑failure tolerance which is traditionally used at Rohde & Schwarz and features two

independent actual value detectors downstream of the subamplifiers with the same out-

put power.

The PWR_OUT signal which is proportional to the sum output power is used as the actual

value for control. In order to still retain tolerance with regard to transistor failures, the

principle of the "intelligent control brake" is applied (IPLIM = Intelligent Power LIMiter).

Here, the adjustment range of the control amplifier is simply limited adaptively in such a

way that overloading of the intact transistors in the event of a transistor failure cannot

result in their failure. The control brake therefore always adapts to the current conditions

in the control circuit. This principle exploits the fact that changes in gain and input signal

which are the result of temperature and aging take place only slowly.

The manipulated variable (the regulating voltage of the PIN attenuator) is recorded at

long intervals. The control brake (i.e. the maximum possible value for the regulating volt-

age) is derived from the measured value plus the difference which is not exceeded until

the next measurement, provided that normal temperature and aging processes exist. This

means that the control brake will also increase slowly if, for example, the gain drops with

increasing temperature and the regulating voltage of the PIN attenuator increases in order

to maintain the output power. In the case of dramatic changes resulting from transistor

failure or dramatic changes in the input signal, adaptation of the control brake with respect

to this is stopped and the control brake thus becomes fully effective.

The amplifier control now analyzes the current situation without disturbance and

responds according to the determined cause. If the cause is, for example, a transistor

failure, the amplifier control adapts the nominal regulation value according to the remain-

ing performance of the amplifier. In this way, a stabilized condition is achieved, albeit with

reduced output power. At power ON and if the nominal regulation value is changed, the

control brake is of course stopped briefly.

Reflected power test point

In the case of reflection at the amplifier output, the forward power is reduced in order to

protect the amplifier. For this purpose, the REFL_SAVE signal is acquired at the reflected

power test point. This signal is superimposed on the actual value signal during power

control by means of a diode. If the REFL_SAVE signal exceeds the voltage of the forward

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

84System Manual 2600.5423.02 ─ 01

power detector PWR_OUT, the reflected power test point takes over power control. The

control amplifier supplies the control voltage V_REG as the output quantity and this volt-

age is fed to the amplitude regulator in the preamplifier.

Additionally, the REFL_OUT signal is acquired at the reflected power test point. This

signal together with the PWR_OUT signal (forward power) is used for VSWR indication

at the amplifier output.

5.1.4.5 Self‑Protection Mechanisms

The amplifier has a series of self‑protection and monitoring mechanisms which protect it

against irreparable damage in the case of impermissible operating conditions and enable

transmission to continue for as long as possible. The following mechanisms are available.

●Power supply monitoring

●Input level monitoring

●Output power limitation

●Temperature monitoring incl. fan control

●Reflection monitoring

●Operating mode monitoring

Power supply unit monitoring

The power supply unit has the following self‑protection mechanisms:

●Overtemperature shutdown for the duration of overtemperature

●Short‑circuit current limitation

●Input voltage monitor (enables shutdown to limit the input current in the case of

undervoltage)

●Overvoltage limitation (on DC side)

If no standby power supply unit is installed, failure of the power supply unit (/

DC_OK = high) will mean failure of the amplifier. If a standby power supply unit is installed,

there will be no operational restrictions. The amplifier will however be completely deac-

tivated if both power supply units fail.

The overtemperature shutdown in the power supply is intended purely as a self‑protection

mechanism only and is not indicated by the front LED as the DC voltage is switched off.

A temperature shutdown at the power supply is signaled only indirectly by the message /

DC_OK_x. The power supply unit has status LEDs for normal operation and fault indi-

cation. These LEDs are indirectly visible after removal of the front cover (and, where

applicable, the air filter).

Input level monitoring

If the input level drops below a defined threshold (RF_IN_FAIL), power control is influ-

enced by the following measures:

●The amplitude regulator for power control is switched to maximum attenuation

●The internal reference voltage for power control is suppressed

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

85System Manual 2600.5423.02 ─ 01

A soft start is performed as soon as the input signal returns. The selected threshold is

such that the amplifier can be reliably operated across the entire temperature range in

all permissible operating modes, even at the lower tolerance limit of the RF_IN input

signal at X10.

Output power limitation

The output power is set by means of the VREF_PWR signal. The output power is limited

such that the amplifier cannot be damaged at excessively high VREF_PWR values. In

addition, the average output power of the amplifier is also limited by means of hardware.

Excessive power if the forward power test point fails as well as subsequent failures if a

transistor fails are countered by the intelligent control brake.

Temperature monitoring and fan control

The power supply units and amplifier circuit each have a dedicated hardware overtem-

perature shutdown mechanism. If a temperature threshold is exceeded, the amplifier is

disabled (TEMP_FAIL message), whereby the threshold for the overtemperature shut-

down is above the permissible operating temperature. This ensures that the remaining

overall power loss does not lead to overheating of the instrument, even with total failure

of the cooling system.

The fan has four different speed settings, whereby the second speed is the standard

speed which has been optimized with regard to the average junction temperature of the

output stage and to noise generation.

To ensure that transmission can continue for as long as possible, the temperature and

fan control functions work together as follows:

●If the temperature rises in the amplifier circuit, the fan speed is first increased before

the hardware shutdown threshold is reached.

●If this is not enough, at temperatures above 83 °C the amplifier control begins to

reduce the output power in steps of 1 dB (DTV only, REDUCED_PWR message).

●With ATV, the output power is not reduced at excessively high temperatures. Instead,

the amplifier is shut down by means of software at 85 °C.

●At temperatures above 90 °C, the amplifier remains switched off by means of hard-

ware for as long as the overtemperature exists. Overtemperature on the amplifier

board is indicated by means of the front TEMP FAIL LED (with ATV: at 85 °C and

higher).

●An appropriate hysteresis is integrated to prevent deactivation and activation from

occurring too soon. A soft start is performed as soon as power returns.

In addition, the inlet and outlet temperature is measured by means of two sensors (on

the front and rear side of the amplifier board, thermally insulated from the rest of the

printed board). This allows, for example, a fouled air filter to be detected and changed in

good time (AIR_FILT_FAIL message).

Reflection monitoring

A distinction is made between the following types of reflection monitoring (REFLECTION

message):

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

86System Manual 2600.5423.02 ─ 01

●With major reflection above reflection threshold 2 (s = 2), the power is briefly cut off

completely first of all; a soft start is performed immediately afterwards. If any reflection

remains, the amplifier protects itself by reducing the output power. The time constant

selected for the shutdown is such that damage to the amplifier is prevented in the

case of total reflection and at all phase angles of the reflection at X2.

●With weaker reflection above reflection threshold 1 (S = 1.5), the output power is

reduced without preceding shutdown.

●When reflection no longer exists, the power reduction is canceled automatically.

Operating mode monitoring

Using a 5‑bit code (FREQ_ID), the transmitter notifies the amplifier of the expected oper-

ating mode and, in Doherty mode, the expected tuning variant (transmit frequency). If this

code is not the same as the code of the tunit installed in the amplifier, the amplifier ignores

the ON command and signals FREQ_FAIL.

For conventional broadband operation, the FREQ_ID is 00000. If no tunit is installed, the

amplifier signals FREQ_ID 11111. All other FREQ_IDs are reserved for Doherty mode.

5.1.4.6 Emergency Shutdown

The amplifier can be disabled externally by means of the SHUT_DOWN signal at X11,

for example to ensure self‑protection for the absorber of the power combiner in the trans-

mitter. The signal, which is immune to cable breaks, is fed via an optocoupler on

CAN_GND and is therefore insulated from amplifier ground. The output power is sup-

pressed for as long as no connection to CAN_GND exists.

To activate the amplifier when the R&S GT800A1 test box is being used, it is necessary

to connect X20 (GND) to X21 on the test box.

5.1.5 Specifications

5.1.5.1 General Data

Frequency range 470 MHz to 862 MHz (band 4 and 5)

Power supply (3 separate phases)

- Nominal voltage range 200 V to 240 V

- Tolerance range 170 V to 264 V

- Nominal frequency range 50 Hz to 60 Hz

- Tolerance range 47 Hz to 63 Hz

Power factor (cosφ)≥0.98 at nominal power

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

87System Manual 2600.5423.02 ─ 01

Operating temperature range (Turoom) +1 °C to +45 °C

Inlet air temperature (Tinlet air) +1 °C to +45 °C

Storage and transport temperature range -40 °C to +85 °C

Setting range for amplifier phase (via CAN) ±12.5° to ±17.5°

Harmonics

- up to 550 MHz ≤ -30 dBc

- as of 550 MHz ≤ -50 dBc

VSWR RF input (X10) ≤ 1.4

VSWR RF output (X2)

- compliance with specifications ≤ 1.3

- reduction as of 1.6±0.3

Overtemperature shutdown 90 °C ±4 K (sensor on heat sink)

Permissible humidity ≤ 95 % at 40 °C, non‑cyclical, non‑condensing

Ambient conditions Complies with ETSI EN 300‑019‑1‑3

(V2.3.2 2009‑07) Class 3.2 with reduced ambient

temperature and humidity range

Maximum installation altitude above sea level 2000 m (higher on request; power supply units up to

3000 m)

Vibration, sinewave 5 Hz to 150 Hz,

max. 1.8 g at 55 Hz,

max. 0.5 g at 55 Hz to 150 Hz

in line with EN60068-2-6, EN61010-1

Vibration, random 10 Hz to 300 Hz

Acceleration 1.2 g (rms)

Shock Shock spectrum 40 g/11 ms to MIL‑STD 810E Method

No. 516.4

Dimensions (depth, width, height) 550 mm, 153 mm, 19'' (3.5 HU)

Weight < 25 kg

5.1.5.2 Digital TV (DTV)

Input power Pavgnominal (DVB‑T / ATSC) 0 dBm / 1 dBm

Maximum input power Pavg,in ≤ +13 dBm

Control range (DVB‑T / ATSC) -6 dBm to +6 dBm / +5 dBm to +7 dBm

Detector setting (signal PEAK_AV, X11) Low (AV)

Output power Pavgnominal (VREF_PWR = 4 V) 600 W

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

88System Manual 2600.5423.02 ─ 01

Setting range for output power referenced to

Pavgnominal

-10 dB to +1.2 dB

Output power DVB‑T, Pavg (nominal value / maximum

value)

600 W / 700 W; Doherty: 600 W / 650 W*

Output power ATSC, Pavg (nominal value / maximum

value)

750 W / 750 W; Doherty: 600 W / 650 W*

Shoulder attenuation at Pavgnominal (without precor-

rection / with precorrection)

≥ +26 dB / ≥ +37 dB

MER with DVB‑T, Pavgnominal (shoulder precorrected

> 37 dB)

≥ 33 dB

Power consumption:

- at 230 V, DVB‑T, 650 W ≤ 3000 VA (Doherty: ≤ 2000 VA)

- at 230 V, ATSC, 750 W ≤ 3000 VA

* Depends on MER and channel

5.1.5.3 Analog TV (ATV Combined)

Input power Psyncnominal +3.5 dBm

Maximum input power Pavg,in ≤ +13 dBm

Control range Psync,in -2.5 dBm to +9.5 dBm

Detector setting (signal PEAK_AV, X11) High (PEAK)

Output power Psyncnominal (VREF_PWR = 4 V) 1000 W

Output power Pavg,max 675 W

Setting range for output power referenced to

Psyncnominal

-10 dB to +0 dB

Power consumption at 1000 W:

- at 230 V, APL = 0 % (all‑black picture) ≤ 3000 VA

- at 230 V, APL = 50 % (gray picture) ≤ 2400 VA

5.1.5.4 CW Mode

Input power Pavgnominal +1 dBm

Maximum input power Pavg,in ≤ +13 dBm

Control range Pavg,in -5 dBm to +7 dBm

Detector setting (signal PEAK_AV, X11) Low (AV)

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

89System Manual 2600.5423.02 ─ 01

Output power Pavgnominal 675 W

Power consumption: at 230 V, CW, 600 W ≤ 2500 VA

Design and Function R&S PMU901

Amplifier R&S PMU901

R&S® TMU9

90System Manual 2600.5423.02 ─ 01

Design and Function R&S PMU901

R&S TMU9 Interface Description

R&S® TMU9

91System Manual 2600.5423.02 ─ 01

A R&S TMU9 Interface Description

A.1 External Transmitter Interfaces

A.1.1 Transmitter Input AC

Table 1-1: Q1: Supply input

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

Line L1 Input 230 V ± 15% Q1.2 230 V L-N

Line L2 Input 230 V ± 15% Q1.4 230 V L-N

Line L3 Input 230 V ± 15% Q1.6 230 V L-N

Neutral N Input 0 V Q1.8/N Neutral conductor

input N

Table 1-2: Q1: Protective conductor terminal

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

PROTECTION EARTH PE Input 0 V X.PE.1 PE terminal NVT

PROTECTION EARTH PE Input 0 V X.PE Station PE

The mains distribution unit designed for the TMU9 is limited to 230 V power supplies.

●AC power supply: 230 V; 2W + PE (L1/N/PE)

●AC power supply: 400 V / 230 V; 4W + PE (L1/L2/L3/N/PE)

All other network configurations can be covered by the optional use of the R&S ZR800Z10

mains distribution unit:

●AC power supply: 230 V; 2W + PE (L1/N/PE)

●AC power supply: 240 V; 2W + PE (L1/L2/PE)

●AC power supply: 400 V / 230 V; 4W + PE (L1/L2/L3/N/PE)

●AC power supply: 208 V Y; 3W + PE (L1/L2/L3/PE)

●AC power supply: 240 V Y; 3W + PE (L1/L2/L3/PE)

●AC power supply: 240 V delta; 3W + PE (L1/L2/L3/PE)

A.1.2 Input Signals (TS, RF, Reference)

The following interfaces are present again with each additional signal processing and

therefore are listed only once at the transmitter level.

External Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

92System Manual 2600.5423.02 ─ 01

●With dual drive, another TS splitter (dual drive) is put upstream of the signal pro-

cessing modules (TCE900 exciter).

●With N+1 systems, a TS splitter (N+1) is put upstream of the signal processing mod-

ule(s) (TCE900 exciter) of the transmitter(s) TxA, and another ASI routing switch is

put upstream of the signal processing module(s) (TCE900 exciter) of the transmit-

ter(s) TxB.

TS feed (ASI, IP)

Table 1-3: X20 – TS1 in: BNC jack 75

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

TS1 Input ASI / SMPTE310M X20.1 TS1 input exciter

GND Bidirec-

tional

0 V X20.2 GND / shield

Table 1-4: X21 – TS2 in: BNC jack 75

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

TS2 Input ASI / SMPTE310M X21.1 TS2 Input Exciter

GND Bidirec-

tional

0 V X21.2 GND / shield

Table 1-5: X30 – TS1 LAN: 8-pin RJ-45 socket

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

TX+ Output Ethernet X32.1 Transmitting line

TX- Output Ethernet X32.2 Transmitting line

RX+ Input Ethernet X32.3 Receiving line

Bidirec-

tional

75 Ω termination X32.4

Bidirec-

tional

75 Ω termination X32.5

RX- Input Ethernet X32.6 Receiving line

Bidirec-

tional

75 Ω termination X32.7

Bidirec-

tional

75 Ω termination X32.8

External Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

93System Manual 2600.5423.02 ─ 01

Table 1-6: X31 – TS2 LAN: 8-pin RJ-45 socket

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

TX+ Output Ethernet X33.1 Transmitting line

TX- Output Ethernet X33.2 Transmitting line

RX+ Input Ethernet X33.3 Receiving line

Bidirec-

tional

75 Ω termination X33.4

Bidirec-

tional

75 Ω termination X33.5

RX- Input Ethernet X33.6 Receiving line

Bidirec-

tional

75 ΩX33.7

Bidirec-

tional

75 ΩX33.8

Receiver module (optional)

Table 1-7: X69 – RF IN DVB-T2 Receiver: BNC jack 50

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

ANTENNA 1 Input 30 MHz to 1 GHz

-92 dBm to 0 dBm

75 Ω

X69.1 RF input

BNC jack

GND Bidirec-

tional

0 V X69.2

Reference feed

Table 1-8: X66 – GPS ANTENNA: SMA socket 50

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

GPS ANT Input -144 dBm to -5 dBm X66.1 50 Ω SMA socket

GND Bidirec-

tional

0 V X66.2

Table 1-9: X23 – 1PPS IN exciter: BNC jack 50

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

1PPS_EXTERN Input TTL level (pos.edge) X23.1 Seconds pulse from

external GPS

receiver

GND Bidirec-

tional

0 V X23.2 GND / shield

External Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

94System Manual 2600.5423.02 ─ 01

Table 1-10: X64 – REF IN: BNC jack 50

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

REF IN Input -5.0 dBm to 20 dBm or

TTL

X64.1 50 Ω BNC jack

GND Bidirec-

tional

X64.2 GND / shield

A.1.3 Transmitter Output

Table 1-11: Transmitter RF output: Connection depending on transmitter output power

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

Tx RF output Output DVB-T; ATSC

PAVG = 200 W to

2.85 kW

ATV

PAVG = 400 W to

4.75 kW

470 MHz to 862 MHz

RF RF output on the

transmitter roof 1 5/8"

EIA upstream of

channel filter

GND Bidirec-

tional

RF GND / shield

A.1.4 Monitoring Signals (TS, RF, Reference)

The monitoring signals for transport stream, reference frequency, 1PPS, and local oscil-

lator are directly implemented at the exciters. The RF test point is accessible at the direc-

tional coupler on the rear side of the rack. With the "Front test points" option, the moni-

toring interfaces are wired to the front of the transmitter.

Table 1-12: X22 – TS MONITOR OUT: BNC jack 75

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

TS MON OUT Output ASI / SMPTE310M X22.1 Ri = 75 Ω

GND Bidirec-

tional

X22.2 GND / shield

Table 1-13: X24 – REF MONITOR: BNC jack 50

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

REF MON Output TTL level X24.1 Reference monitor-

ing exciter

GND Bidirec-

tional

0 V X24.2 GND / shield

External Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

95System Manual 2600.5423.02 ─ 01

Table 1-14: X61 – RF measurement output DTV exciter n: SMA socket 50

Ω

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

RF MONITOR OUT Output -7 dBm ±2 dB X61.1 RF OUT monitoring

for exciter A

GND Bidirec-

tional

X61.2 GND / shield

A.1.5 Remote interfaces

Table 1-15: X2 – LAN remote (1000BaseT): 8-pin RJ-45 socket

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

TX+ Output Ethernet X2.1 Transmitting line

TX- Output Ethernet X2.2 Transmitting line

RX+ Input Ethernet X2.3 Receiving line

Bidirec-

tional

75 Ω termination X2.4

Bidirec-

tional

75 Ω termination X2.5

RX- Input Ethernet X2.6 Receiving line

Bidirec-

tional

75 Ω termination X2.7

Bidirec-

tional

75 Ω termination X2.8

A.2 Internal Transmitter Interfaces

A.2.1 Internal RF Interfaces

Table 1-16: Single transmitter with one amplifier

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1160A 470 MHz to 862 MHz

4 dBm DTV

1 dBm Sync Peak ATV

X60/X10 RF signal from the

TCE900 to input of

amplifier

Internal Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

96System Manual 2600.5423.02 ─ 01

Table 1-17: Backup exciter / dual drive with one amplifier

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1160A 470 MHz to 862 MHz

4 dBm DTV

1 dBm Sync Peak ATV

X60 / X60A RF signal from pro-

gram exciter / exciter

A to input X60A of the

exciter switch

W1160B 470 MHz to 862 MHz

4 dBm DTV

1 dBm Sync Peak ATV

X60 / X60B RF signal from con-

trol exciter / exciter B

to input X60B of the

exciter switch

W1160C 470 MHz to 862 MHz

3 dBm DTV

0 dBm Sync Peak ATV

X60 / X10 RF signal from output

X60C of the exciter

switch to RF input of

the amplifier

Table 1-18: Single transmitter with more than one amplifier

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1160A 470 MHz to 862 MHz

13 dBm DTV

14 dBm Sync Peak

ATV

X60 / X.E RF signal from

exciter to input of

splitter

W307A to E 470 MHz to 862 MHz

3 dBm DTV

4 dBm Sync Peak ATV

X.A1 to A5 /

X10

RF signal from output

of splitter to the

inputs of 2 to 5 ampli-

fiers

470 MHz to 862 MHz

PAVG ≈ 57.75 dBm

X2 / X.E1 to E5 RF signal from out-

puts of 2 to 5 amplifi-

ers to the coupler

inputs

Wxx 470 MHz to 862 MHz

PAVG 2 amps =

60.57 dBm

PAVG 3 amps =

62.33 dBm

PAVG 4 amps =

63.58 dBm

PAVG 5 amps =

64.55 dBm

X.A RF signal from cou-

pler output to

antenna (optionally

to bandpass filter)

Internal Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

97System Manual 2600.5423.02 ─ 01

Table 1-19: Backup exciter / dual drive with more than one amplifier

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1160A 470...862 MHz

13 dBm DTV

14 dBm Sync Peak

ATV

X60 / X60A RF signal from pro-

gram exciter / exciter

A to input X60A of the

exciter switch

W1160B 470...862 MHz

13 dBm DTV

14 dBm Sync Peak

ATV

X60 / X60B RF signal from con-

trol exciter / exciter B

to input X60B of the

exciter switch

W1160C 470...862 MHz

12 dBm DTV

13 dBm Sync Peak

ATV

X60C / X.E RF signal from output

X60C of the exciter

switch to input of the

splitter

W307A to E 470...862 MHz

3 dBm DTV

0 dBm Sync Peak ATV

X.A1 to A5 /

X10

RF signal from output

of splitter to the

inputs of 2 to 5 ampli-

fiers

470 MHz to 862 MHz

Peff, nom ≈ 57.75 dBm

X2 / X.E1 to E5 RF signal from out-

puts of 2 to 5 amplifi-

ers to the coupler

inputs

470 MHz to 862 MHz

PAVG 2 amps =

60.57 dBm

PAVG 3 amps =

62.33 dBm

PAVG 4 amps =

63.58 dBm

PAVG 5 amps =

64.55 dBm

X.A RF signal from cou-

pler output to

antenna (optionally

to bandpass filter)

A.2.2 Internal Ethernet Interfaces

Table 1-20: Dual Drive

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1041 Bidirec-

tional

X41 / X7 LAN LOCAL from

system control to

exciter A

W1042 Bidirec-

tional

X42 / X7 LAN LOCAL from

system control to

exciter B

Internal Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

98System Manual 2600.5423.02 ─ 01

A.2.3 Transmitter Control Bus (CAN bus)

Table 1-21: X6 – TX (CAN bus, 9-pin Sub-D socket)

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

n.c. X6.1

CAN_L Bidirec-

tional

CAN-Level X6.2 CAN bus signal

CAN_GND Bidirec-

tional

0 V X6.3 CAN GND

n.c. X6.4

CAN_SHLD Bidirec-

tional

GND X6.5 Shield

GND Bidirec-

tional

GND X6.6 GND

CAN_H Bidirec-

tional

CAN+Level X6.7 CAN bus signal

n.c. X6.8

CAN_V+ Bidirec-

tional

12 V ± 1 V X6.9

A.2.4 RF Loops

Table 1-22: X41 – RF loop:

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

MAIN TX LOOP +12 V ±2 V X41.1 -12 V floating

LOOP COM (+) +12 V ±2 V X41.2 +12 V floating

RESERVE TX LOOP +12 V ±2 V X41.3 -12 V floating

LOOP COM (+) +12 V ±2 V X41.4 +12 V floating

A.2.5 TSP900 – Display Interface

Table 1-23: DVI interface

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1014 Data lines

Power supply

GND

X14/X3 USB interface to the

TSP900

Internal Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

99System Manual 2600.5423.02 ─ 01

A.2.6 TDU900 – Display Interfaces (Optional)

Table 1-24: DVI interface

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1015 Data lines, clock lines

Power supply

Shielding, GND

X15 / X1 DVI connecting cable

between TCE (IPS

board) and TDU900

display

Table 1-25: Terminal supply

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1012 Power supply

GND

X12 / X1 12 V power supply for

the TDU900

Table 1-26: LAN LOCAL

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1043 Data lines X7 or X43 Connection of the

local Ethernet inter-

face at the front LAN

connection of the

TDU900

Table 1-27: USB 2.0

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

W1014 Data lines

Power supply

GND

X14 / X3 USB interface to the

TDU900 and connec-

tion of the front USB

connection (on the

back of the display)

A.2.7 Air Cooling Interface (Optional)

Table 1-28: X46: FAN 1 (15-pin cable, transfer point in the rack for splitting into individual cables for

exhaust fan control, temperature, pressure)

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

CTRL_FAN1 Output 0 V to 10 V or PWM X46.4 Speed control for

exhaust fan 1

SPEED_FAN1 Input Open collector,

1 pulse per revolution

X46.12 Speed output for

exhaust fan 1,

1 pulse per revolution

Internal Transmitter Interfaces

R&S TMU9 Interface Description

R&S® TMU9

100System Manual 2600.5423.02 ─ 01

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

10V_FAN1 Input 10 V (max. 1.1 mA) X46.11 10 V voltage output

Exhaust fan 1

GND Bidirec-

tional

X46.5

PRESSURE_1 Input 4 mA to 20 mA X46.14 Measured value from

differential pressure

sensor 1

GND Bidirec-

tional

X46.7

TEMP_IN Input 4 mA to 20 mA X46.8 Measured value from

the temperature sen-

sor at the rack input

GND Bidirec-

tional

X46.15

Table 1-29: X47: FAN 2 (15-pin cable, transfer point in the rack for splitting into individual cables for

exhaust fan control, temperature, pressure)

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

CTRL_FAN2 Output 0 V to 10 V or PWM X47.4 Speed control for

exhaust fan 2

SPEED_FAN2 Input Open collector,

1 pulse per revolution

X47.12 Speed output for

exhaust fan 2,

1 pulse per revolution

10V_FAN2 Input 10 V (max. 1.1 mA) X47.11 10 V voltage output

Exhaust fan 2

GND Bidirec-

tional

X47.5

PRESSURE_2 Input 4 mA to 20 mA X47.14 Measured value from

differential pressure

sensor 2

GND Bidirec-

tional

X47.7

TEMP_OUT Input 4 mA to 20 mA X47.8 Measured value from

the temperature sen-

sor at the rack output

GND Bidirec-

tional

X47.15

DIG_IN Input 0 V to 5 V X47.9 Digital input for "Filter

clogged" message

GND Bidirec-

tional

X47.1

Internal Transmitter Interfaces

R&S TCE900 Interface Description

R&S® TMU9

101System Manual 2600.5423.02 ─ 01

B R&S TCE900 Interface Description

B.1 Interfaces of Base Unit

B.1.1 X1: MAINS

Signal Name Direction Value range Connection

point

Remarks

L1 Input 100V-240V AC,

50-60Hz±10%

X1.L Supply Input

N Input X1.N Supply Input

PE Input X1.PE Supply Input

B.1.2 Interfaces of Main Computer IPS1

B.1.2.1 X2 LAN REMOTE

Signal Name Direction Value range Connection

point

Remarks

BI_DA+ Bi-directional Vodiff= 670…820mVss X2.1

BI_DA- Bi-directional Vidiff= 750mVsstyp. X2.2

BI_DB+ Bi-directional Vodiff= 670…820mVss X2.3

BI_DB- Bi-directional Vidiff= 750mVsstyp. X2.4

BI_DC+ Bi-directional Vodiff= 670…820mVss X2.5

BI_DC- Bi-directional Vidiff= 750mVsstyp. X2.6

BI_DD+ Bi-directional Vodiff= 670…820mVss X2.7

BI_DD- Bi-directional Vidiff= 750mVsstyp. X2.8

B.1.2.2 X14 USB 1

Signal Name Direction Value range Connection

point

Remarks

+5V USB Output X 14.1

USB Data- Bi-directional X 14.2

Interfaces of Base Unit

R&S TCE900 Interface Description

R&S® TMU9

102System Manual 2600.5423.02 ─ 01

Signal Name Direction Value range Connection

point

Remarks

USB Data+ Bi-directional X 14.3

GND Bi-directional X 14.4

B.1.2.3 X15 USB 2

Signal Name Direction Value range Connection

point

Remarks

+5V USB Output X 15.1

USB Data- Bi-directional X 15.2

USB Data+ Bi-directional X 15.3

GND Bi-directional X 15.4

B.1.2.4 X11 DVI

Signal Name Direction Value range Connection

point

Remarks

Data 2- X 11.1

Data 2+ X 11.2

Shielding data 2,4 X 11.3

Data 4- X 11.4

Data 4+ X 11.5

DDC clock X 11.6

DDC data X 11.7

V-Sync X 11.8

Data 1- X 11.9

Data 1+ X 11.10

Shielding Data 1,3 X 11.11

Data 3- X 11.12

Data 3+ X 11.13

+5V X 11.14

GND X 11.15

Hotplug-Detect X 11.16

Data 0- X 11.17

Data 0+ X 11.18

Interfaces of Base Unit

R&S TCE900 Interface Description

R&S® TMU9

103System Manual 2600.5423.02 ─ 01

Signal Name Direction Value range Connection

point

Remarks

Shielding data 0,5 X 11.19

Data 5- X 11.20

Data 5+ X 11.21

Shielding data X 11.22

Clock + X 11.23

Clock - X 11.24

Red X 11.C1

Green X 11.C2

Blue X 11.C3

H-Sync X 11.C4

GND X 11.C5

B.1.3 Interfaces of System Connection Boards (SCB)

B.1.3.1 X3 LAN LOCAL FRONT

Signal Name Direction Value range Connection

point

Remarks

BI_DA+ Bi-directional Vodiff= 670…820mVss X3.1

BI_DA- Bi-directional Vidiff= 750mVsstyp. X3.2

BI_DB+ Bi-directional Vodiff= 670…820mVss X3.3

BI_DB- Bi-directional Vidiff= 750mVsstyp. X3.4

BI_DC+ Bi-directional Vodiff= 670…820mVss X3.5

BI_DC- Bi-directional Vidiff= 750mVsstyp. X3.6

BI_DD+ Bi-directional Vodiff= 670…820mVss X3.7

BI_DD- Bi-directional Vidiff= 750mVsstyp. X3.8

B.1.3.2 X7 LAN LOCAL REAR

Signal Name Direction Value range Connection

point

Remarks

BI_DA+ Bi-directional Vodiff= 670…820mVss X7.1

BI_DA- Bi-directional Vidiff= 750mVsstyp. X7.2

Interfaces of Base Unit

R&S TCE900 Interface Description

R&S® TMU9

104System Manual 2600.5423.02 ─ 01

Signal Name Direction Value range Connection

point

Remarks

BI_DB+ Bi-directional Vodiff= 670…820mVss X7.3

BI_DB- Bi-directional Vidiff= 750mVsstyp. X7.4

BI_DC+ Bi-directional Vodiff= 670…820mVss X7.5

BI_DC- Bi-directional Vidiff= 750mVsstyp. X7.6

BI_DD+ Bi-directional Vodiff= 670…820mVss X7.7

BI_DD- Bi-directional Vidiff= 750mVsstyp. X7.8

B.1.3.3 X66 GPS ANTENNA

Signal Name Direction Value range Connection

point

Remarks

GPS ANTENNA Input -144dBm ... -5dBm X66.1 50Ω

SMA-Buchse

GND Bi-directional 0V X66.2

B.1.3.4 X12 TERMINAL SUPPLY

12V, 1A Versorgung für externes Display

Typische Stromaufnahme der TDU900:

Background light DVI Signal USB connection on

input side (no load)

Ub on TDU900

12V

Ub on TDU900

10,5V

inactive inactive open

active inactive open 414mA 472mA

active active open 483mA 550mA

active active connected with PC 530mA 605mA

Signal Name Direction Value range Connection

point

Remarks

TERMINA Output 12V +- 1,5V X12.1 Imax. = 1A

GND Bi-directional X12.2

NC X12.3

NC X12.4

Interfaces of Base Unit

R&S TCE900 Interface Description

R&S® TMU9

105System Manual 2600.5423.02 ─ 01

B.1.3.5 X6 TX

(CAN bus, proceted loop, 12V supply for systemcomponents, positions recogniction)

Signal Name Direction Value range Connection

point

Remarks

Position1 Input X6.1

GND Bi-directional 0V X6.6

CAN_L Bi-directional CAN-Bus X6.2

CAN_H Bi-directional CAN-Bus X6.7

GND Bi-directional 0V X6.3

LOOP+ Bi-directional Open -> protective

loop open

Connection to LOOP -

> protective loop

closed

X6.8

LOOP- Bi-directional Open -> protective

loop open

Connection to LOOP+

-> protective loop

closed

X6.4

+12V_RC Output +12V +- 1,5V, max 1A X6.9 supply of system

components

Position2 Input X6.5

B.2 Module Slots

B.2.1 Coder Board

B.2.1.1 X30 TS LAN 1

Signal Name Direction Value range Connection

point

Remarks

BI_DA+ Bi-directional Vodiff= 670…820mVss X30.J1

BI_DA- Bi-directional Vidiff= 750mVsstyp. X30.J2

BI_DB+ Bi-directional Vodiff= 670…820mVss X30.J3

BI_DB- Bi-directional Vidiff= 750mVsstyp. X30.J4

BI_DC+ Bi-directional Vodiff= 670…820mVss X30.J5

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

106System Manual 2600.5423.02 ─ 01

Signal Name Direction Value range Connection

point

Remarks

BI_DC- Bi-directional Vidiff= 750mVsstyp. X30.J6

BI_DD+ Bi-directional Vodiff= 670…820mVss X30.J7

BI_DD- Bi-directional Vidiff= 750mVsstyp. X30.J8

B.2.1.2 X31 TS LAN 2

Signal Name Direction Value range Connection

point

Remarks

BI_DA+ Bi-directional Vodiff= 670…820mVss X31.J1

BI_DA- Bi-directional Vidiff= 750mVsstyp. X31.J2

BI_DB+ Bi-directional Vodiff= 670…820mVss X31.J3

BI_DB- Bi-directional Vidiff= 750mVsstyp. X31.J4

BI_DC+ Bi-directional Vodiff= 670…820mVss X31.J5

BI_DC- Bi-directional Vidiff= 750mVsstyp. X31.J6

BI_DD+ Bi-directional Vodiff= 670…820mVss X31.J7

BI_DD- Bi-directional Vidiff= 750mVsstyp. X31.J8

B.2.1.3 X23 1PPS IN

Signal Name Direction Value range Connection

point

Remarks

1PPS_EXTERN Input TTL-level

pos. edge

X23.1 seconds pulse from

external GPS-

receiver

GND Bi-directional 0V X23.2 BNC-socket

B.2.1.4 X24 REF MONITOR

Signal Name Direction Value range Connection

point

Remarks

1REF_MON Output TTL-Pegel X24.1 BNC-socket

GND Bi-directional 0V X24.2

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

107System Manual 2600.5423.02 ─ 01

B.2.1.5 X20 TS1 IN

Signal Name Direction Value range Connection

point

Remarks

TS1 Input ASI, SMPTE310M /

ETI

X20.1 Ri=75Ω

BNC

GND Bi-directional 0V X20.2

B.2.1.6 X21 TS2 IN

Signal Name Direction Value range Connection

point

Remarks

TS1 Input ASI , SMPTE310M /

ETI

X21.1 Ri=75Ω

BNC

GND Bi-directional 0V X21.2

B.2.1.7 X22 TS MONITOR OUT

Signal Name Direction Value range Connection

point

Remarks

TS_MON Output ASI , SMPTE310M /

ETI

X22.1 Ri=75Ω

BNC

GND Bi-directional 0V X22.2

B.2.2 RF Board

B.2.2.1 X64 REF IN

Signal Direction Value range Connection

point

Remarks

EXT_REF_IN Input -5 … 20 dBm oder TTL X64.1 50R

BNC-socket

GND Bi-directional 0V X64.2

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

108System Manual 2600.5423.02 ─ 01

B.2.2.2 X60 RF OUT

Signal Name Direction Value range Connection

point

Remarks

RF_OUT Output 13 dBm DTV

20 dBm Sync Peak

ATV

X60.1 50R SMA-socket

GND Bi-directional 0V X60.2

B.2.2.3 X61 RF MONITOR OUT

Signal Name Direction Value range Connection

point

Remarks

RF_MON_OUT Output ATV / DVB

0 / -7 dBm ± 2dB

X61.1 Z = 50 Ohm

SMA-socket

GND Bi-directional X61.2

B.2.2.4 X67 RF DOWNCONVERTER 1 IN

For automatic non-linear equalization for DTV, ATV / HF-surveillant for ATV

Signal Name Direction Value range Connection

point

Remarks

RF_DOWN-

CONVERTER_1

Input +7 dBm (-2 …

+1dB) DTV

+13dBm

Sync.Peak (- 2 …

+1dB) ATV

X67.1 50R

SMA-socket

GND Bi-directional 0V X67.2

B.2.2.5 X68 RF DOWNCONVERTER 2 IN

For automatic linear equalization / quality monitoring of the output signal

Signal Name Direction Value range Connection

point

Remarks

RF_DOWN-

CONVERTER_2

Input +7 dBm (-2 …

+1dB) DTV

+13dBm

Sync.Peak (- 2 …

+1dB) ATV

X68.1 50R

SMA-socket

GND Bi-directional 0V X68.2

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

109System Manual 2600.5423.02 ─ 01

B.2.3 Tx Interface

B.2.3.1 X40 LAN 1

Ethernet Port P0

Signal Name Direction Value range Connection

point

Remarks

TX+ (D1+) Bi-directional -1 V … +1 V

Differential to TX+

Impedance: 100Ω

X40.J1

TX- (D1-) Bi-directional -1 V … +1 V

Differential to TX+

Impedance: 100Ω

X40.J2

RX+ (D2+) Bi-directional -1 V … +1 V

Differential to RX+

Impedance: 100Ω

X40.J3

D3+ X40.J4

D3- X40.J5

RX- (D2-) Bi-directional -1 V … +1 V

Differential to RX+

Impedance: 100Ω

X40.J6

D4+ X40.J7

D4- X40.J8

B.2.3.2 X41 LAN 2

Ethernet Port P1

Signal Name Direction Value range Connection

point

Remarks

TX+ (D1+) Bi-directional -1 V … +1 V

Differential to TX+

Impedance: 100Ω

X41.J1

TX- (D1-) Bi-directional -1 V … +1 V

Differential to TX+

Impedance: 100Ω

X41.J2

RX+ (D2+) Bi-directional -1 V … +1 V

Differential to RX+

Impedance: 100Ω

X41.J3

D3+ X41.J4

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

110System Manual 2600.5423.02 ─ 01

Signal Name Direction Value range Connection

point

Remarks

D3- X41.J5

RX- (D2-) Bi-directional -1 V … +1 V

Differential to RX+

Impedance: 100Ω

X41.J6

D4+ X41.J7

D4- X41.J8

B.2.3.3 X42 LAN 3

Ethernet Port P2

Signal Name Direction Value range Connection

point

Remarks

TX+ (D1+) Bi-directional -1 V … +1 V

Differential to TX+

Impedance: 100Ω

X42.J1

TX- (D1-) Bi-directional -1 V … +1 V

Differential to TX+

Impedance: 100Ω

X42.J2

RX+ (D2+) Bi-directional -1 V … +1 V

Differential to RX+

Impedance: 100Ω

X42.J3

D3+ X42.J4

D3- X42.J5

RX- (D2-) Bi-directional -1 V … +1 V

Differential to RX+

Impedance: 100Ω

X42.J6

D4+ X42.J7

D4- X42.J8

B.2.3.4 X43 LAN 4

Ethernet Port P3

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

111System Manual 2600.5423.02 ─ 01

Signal Name Direction Value range Connection

point

Remarks

TX+ (D1+) Bi-directional -1 V … +1 V

Differential to TX+

Impedance: 100Ω

X43.J1

TX- (D1-) Bi-directional -1 V … +1 V

Differential to TX+

Impedance: 100Ω

X43.J2

RX+ (D2+) Bi-directional -1 V … +1 V

Differential to RX+

Impedance: 100Ω

X43.J3

D3+ X43.J4

D3- X43.J5

RX- (D2-) Bi-directional -1 V … +1 V

Differential to RX+

Impedance: 100Ω

X43.J6

D4+ X43.J7

D4- X43.J8

B.2.3.5 X44 Power Distributor

Sub D15

Signal Name Direction Value range Connection

point

Remarks

OVERVOLTAGE_1 Input 0 V / 12 V X44.1 GND_FLOAT for OK

+12V_FLOAT for

Error

OVERVOLTAGE_3 Input s. X44.1 X44.2 s. X44.1

OVERVOLTAGE_5 Input s. X44.1 X44.3 s. X44.1

OVERVOLTAGE_7 Input s. X44.1 X44.4 s. X44.1

GND_FLOAT (out) Output 0 V X44.5 Galvanically seper-

ated

external power sup-

ply

COOLING_DL1 Output 0 V…30 VDC;

2 A max., 60 W max.

X44.6 Closed contact for

CoolingON

+12V_FLOAT (out) Output 12 V ± 20%, max. 320

mA (Total current with

X45.7 and internal con-

sumption on BG)

X44.7 Galvanically seper-

ated

external power sup-

ply

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

112System Manual 2600.5423.02 ─ 01

Signal Name Direction Value range Connection

point

Remarks

EXT_VOLT-

AGE_MONITORING

Input 0 V…30 V X44.8 Monitoring of an

external voltage

OVERVOLTAGE_2 Input s. X44.1 X44.9 s. X44.1

OVERVOLTAGE_4 Input s. X44.1 X44.10 s. X44.1

OVERVOLTAGE_6 Input s. X44.1 X44.11 s. X44.1

OVERVOLTAGE_8 Input s. X44.1 X44.12 s. X44.1

COOLING_DL2 D Output 0 V…30 VDC;

2 A max., 60 W max.

X44.13 Closed contact for

CoolingON

EXT_DOORCON-

TACT

Input 0 V / 12V X44.14 GND_FLOAT for

closed

+12V_FLOAT for

open

EXT_SWITCHOVER I

D D

Input 0 V / 12 V X44.15 GND_FLOAT for

Switchover desired

+12V_FLOAT for

Switchover not

desired

GND X44.M1 shielding material

GND X44.M2 shielding material

B.2.3.6 X45 Rf Switch PAR IO

Signal Name Direction Value range Connection

point

Remarks

POS1/2_TX1 Input OPEN / 0 V / 12 V X45.1 Indicator position HF-

switch and USV-dis-

turbance

OPEN for open

0 V for Pos2

12 V for Pos1

STATUS_POS1/2_TX3 Input s. X45.1 X45.2 s. X45.1

STATUS_POS1/2_TX5 Input s. X45.1 X45.3 s. X45.1

CON-

TROL_SWITCH_POS1

Output 0 V … 28 V, 1.35 W

max. (external ser-

ies resistor neces-

sary)

X45.4 Open Collector

against GND

GND_FLOAT (out) Output 0 V X45.5 galvanically seper-

ated

external power sup-

ply

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

113System Manual 2600.5423.02 ─ 01

Signal Name Direction Value range Connection

point

Remarks

GPO2 OD D X45.6 Output 0 V / 12 V X45.6 GND_FLOAT for

Active (100Ω series

resistor

+12V_FLOAT for

Inactive (4k7Ω pull-

up resistor)

+12V_FLOAT (out) Output 12 V ± 20%, max.

320 mA (total cur-

rent with X44.7 and

internal consump-

tion on BG)

X45.7 galvanically seper-

ated

external power sup-

ply

USV_ERROR Input 0 V / 12 V X45.8 USV-disturbance

GND_FLOAT for

ResetFaults

STATUS_POS1/2_TX2 Input s. X45.1 X45.9 s. X45.1

STATUS_POS1/2_TX4 Input s. X45.1 X45.10 s. X45.1

STATUS_POS1/2_TX6 Input s. X45.1 X45.11 s. X45.1

CON-

TROL_SWITCH_POS2

Output 0 V … 28 V, 1.35 W

max. (external ser-

ies resistor neces-

sary)

X45.12 Open Collector

against GND

GPO1 Output 0 V /12 V X45.13 GND_FLOAT for

Active (100Ω series

resistance)

+12V_FLOAT for

Inactive (4k7Ω pull-

up resistance)

+12V (out) Output +12 V ± 5%, max.

1.1 A (total input

current in BG <2A

and backplane < 7A

has to be adhered

to)

X45.14 ensured over SI FF

7A (Backplane)

ensured over 2A5

and 1A1 (TXINTER-

FACE)

GPI5 Input 0 V / 12 V X45.15 External- Switchover

GND_FLOAT for

ResetFaults

GND X45.16 shielding material

GND X45.17 shielding material

B.2.4 Cooling Interface (CIF)

B.2.4.1 X46 Pump

15-pin SUB-D socket

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

114System Manual 2600.5423.02 ─ 01

All potentials on this socket refer to GND_FLOAT.

Signal Name Direction Value range Connection

point

Remarks

RS485_3_A Bi-directional 0-5V X46. RS485

RS485_3_B Bi-directional 0-5V X46.9 RS485

CAN_H Bi-directional CAN X46.2 CAN Bus

CAN_L Bi-directional CAN X46.10 CAN Bus

GND_FLOAT Output 0V X46.3 Ground, external

potential, LP-filtered

PRES_WARN Input 0-5V X46.11 Digital input, pres-

sure warning, Pull-

up with 4k7 on 5V,

high active

PRES_FAULT Input 0-5V X46.4 Digital input, pres-

sure failure, Pull-up

with 4k7 on 5V, high

active

24V_FLOAT_SUP-

PLY_FAN

Output 22V- 25V (nominal:

24V)

X46.12 power supply for fan

with 0.5A ensured,

LP-filterd

RACK2_FAULT Input 0-5V X46.5 Digital input, Rack2

failure, Pull-up with

4k7 on 5V, high

active

TEMP_IN_RACK_2 Input 0-5V X46.13 analogue or digital

input to temperature

measurement of the

cooling agent tem-

perature on input of

rack 2

5V_FLOAT Output 4.60V-5.25V (nomi-

nal: 4.92V)

X46.6 with 0.5A ensured,

LP-filterd

PRES_ANA_RACK_2 Input 0-12V X46.14 analogue input to

measure the pres-

sure in cooling circuit

of rack 2

RS485_4_A Bi-directional 0-5V X46.7 RS485

RS485_4_B Bi-directional 0-5V X46.15 RS485

TEMP_OUT_RACK_2 Input 0-5V X46.8 analogue in put to

measure the cooling

agent temperature

on output of rack 2

B.2.4.2 X47 HEX

15-pin SUB-D socket

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

115System Manual 2600.5423.02 ─ 01

All potentials on this socket refer to GND_FLOAT.

Signal Name Direction Value range Connection

point

Remarks

RS485_1_A Bi-directional 0-5V X47.1 RS485

RS485_1_B Bi-directional 0-5V X47.9 RS485

EXT_COOL_ON_1 B D Bi-directional Max. 2A, 30V DC X47.2 contact 1 without

potential

EXT_COOL_ON_2 Bi-directional Max. 2A, 30V DC X47.10 contact 2 without

potential

GND_FLOAT Output 0V X47.3 Ground, external

potential, LP-filtered

EXT_COOL_WARN Input 0-5V X47.11 Digital input, external

cooling warning,

Pull-up with 4k7 on

5V, high active

EXT_COOL_FAULT Input 0-5V X47.4 Digital input, external

colling failure, Pull-

up with 4k7 on 5V,

high active

24V_FLOAT_SUP-

PLY_FAN

Output 22V- 25V (nominal:

24V)

X47.12 power supply for fan

with 0.5 A ensured,

LP-filtered

RACK1_FAULT Input 0-5V X47.5 Digital input, rack1

failure, Pull-up with

4k7 on 5V, high

active

TEMP_IN_RACK_1 Input 0-5V X47.13 Analogue input to

measure the cooling

agent temperature

on input of rack 1

5V_FLOAT Output 4.60V-5.25V (nomi-

nal: 4.92V)

X47.6 power supply with

0.5A ensured, LP-fil-

tered

PRES_ANA_RACK_1 Input 0-12V X47.14 Analogue input to

measure the pres-

sure in cooling circuit

of rack 1

RS485_2_A Bi-directional 0-5V X47.7 RS485

RS485_2_B Bi-directional 0-5V X47.15 RS485

TEMP_OUT_RACK_2 Input 0-5V X47.8 Analogue input to

measure the cooling

agent temperature

on output of rack 1

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

116System Manual 2600.5423.02 ─ 01

B.2.5 Air Cooling Interface (Optional)

B.2.5.1 Connection to Exhaust Fan, Differential Pressure Sensor, X46 FAN1

15-pin SUB-D socket

All potentials on this socket refer to GND_FLOAT.

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

CTRL_FAN1 Output 0 V to 10 V or PWM X46.4 Speed control for

exhaust fan 1

SPEED_FAN1 Input Open collector,

1 pulse per revolution

X46.12 Speed output for

exhaust fan 1,

1 pulse per revolution

10V_FAN1 Input 10 V (max. 1.1 mA) X46.11 10 V voltage output

Exhaust fan 1

GND Bidirec-

tional

X46.5

PRESSURE_1 Input 4 mA to 20 mA X46.14 Measured value from

differential pressure

sensor 1

GND Bidirec-

tional

X46.7

TEMP_IN Input 4 mA to 20 mA X46.8 Measured value from

the temperature sen-

sor at the rack input

GND Bidirec-

tional

X46.15

B.2.5.2 Connection to Exhaust Fan, Differential Pressure Sensor, X47 FAN2

15-pin SUB-D socket

All potentials on this socket refer to GND_FLOAT.

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

CTRL_FAN2 Output 0 V to 10 V or PWM X47.4 Speed control for

exhaust fan 2

SPEED_FAN2 Input Open collector,

1 pulse per revolution

X47.12 Speed output for

exhaust fan 2,

1 pulse per revolution

10V_FAN2 Input 10 V (max. 1.1 mA) X47.11 10 V voltage output

Exhaust fan 2

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

117System Manual 2600.5423.02 ─ 01

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

GND Bidirec-

tional

X47.5

PRESSURE_2 Input 4 mA to 20 mA X47.14 Measured value from

differential pressure

sensor 2

GND Bidirec-

tional

X47.7

TEMP_OUT Input 4 mA to 20 mA X47.8 Measured value from

the temperature sen-

sor at the rack output

GND Bidirec-

tional

X47.15

Module Slots

R&S TCE900 Interface Description

R&S® TMU9

118System Manual 2600.5423.02 ─ 01

Module Slots

R&S PMU901 Interface Description

R&S® TMU9

119System Manual 2600.5423.02 ─ 01

C R&S PMU901 Interface Description

C.1 X1: Supply Input; Schaltbau M3 connector

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

L Input V AC = 170 V to 264 V

I ≤ 15 A

47 Hz to 63 Hz

cos φ ≥ 0.95 at 230 V

and Pnom

X1.1 Power supply con-

nection for the regu-

lar power supply

N Input 0 V X1.2

LReserve Input V AC = 170 V - 264 V

I ≤ 15 A

47 Hz to 63 Hz

cos φ ≥ 0.95 at 230 V

and Pnom

X1.3 Power supply con-

nection for the

standby power sup-

ply

NReserve Input 0 V X1.5

PE Input 0 V X1.PE Power supply con-

nection

Since the PE connections also need to be fed in separately for separate electrical circuits,

a second protective earth must be ensured via a grounding bolt (40 A test current), since

only one shared PE is fed in on the X1.

Increased leakage current! The instrument must first be connected to the protective

ground. An additional ground wire connection is provided since two power supply circuits

are possible: Automatically pluggable (socket 3587.4188.00, at pin contact 3587.4194.00

on the rack side) for rack installation and as a stud for table operation as well.

Shutoff at all poles for the connecting cables is necessary for two-phase networks (2W

+ PE).

X1: Supply Input; Schaltbau M3 connector

R&S PMU901 Interface Description

R&S® TMU9

120System Manual 2600.5423.02 ─ 01

C.2 X2: RF Output 7/16 - Socket (Rear)

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

RF_OUTPUT Output Pavg,nom=600 W (DVB-

Pavg,max = 650 W/

750 W

Psync,nom = 1400 W

(combined)

470 MHz to 862 MHz

to 50 Ω load, S ≤ 1.4

X2 RF output

C.3 X3: RF Test Socket; SMA Female (Front)

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

RF_MONITOR Output 0.5 V to 1 V / at Psync,nom

-54 dBc to -48 dBc

470 MHz to 862 MHz

X3 RF monitor as an

open test point on the

front panel

C.4 X10: RF Input SMA Female (Rear)

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

RF_IN Input Pavg,nom = ±0 dBm ±

3 dB (DVB-T)

Psync,nom= +3.5 dBm ±

3 dB (ATV combined)

470 MHz to 862 MHz

S11 matching: ≤-16 dB

X10 RF input

X2: RF Output 7/16 - Socket (Rear)

R&S PMU901 Interface Description

R&S® TMU9

121System Manual 2600.5423.02 ─ 01

C.5 X13: Second RF Test Socket for ADE; SMA Female

(Rear)

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

ADE_OUT Output 0.5 V to 1 V / at Psync,nom

-54 dBc to -48 dBc

470 MHz to 862 MHz

X13 RF test point prefera-

bly for connecting the

ADE demodulator

C.6 X22: Fan Connection 1; 4-pin Molex Connector

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

VCC_FAN Output +18 V DC to +28 V DC X22.1

VCC_GND Bidirec-

tional

0 V X22.2

FAN_SPEED Input Open collector X22.3

NC X22.4

The fan connection is located directly on the amplifier board.

C.7 X23: Fan Connection 2; 4-pin Molex Connector

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

VCC_FAN Output +18 V DC to +28 V DC X23.1

VCC_GND Bidirec-

tional

0 V X23.2

FAN_SPEED Input Open collector X23.3

NC X23.4

The fan connection is located directly on the amplifier board.

X13: Second RF Test Socket for ADE; SMA Female (Rear)

R&S PMU901 Interface Description

R&S® TMU9

122System Manual 2600.5423.02 ─ 01

C.8 X11: Amplifier Control Unit; 15-pin D-Sub connector

(rear)

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

SORT1 Bidirec-

tional

0 V to 13 V X11.1 Sort PIN 1, short-cir-

cuit-proof, relative to

CAN_GND,

<1 V: low,

>8 V: high

ADGND Input 0 V ± 1 V X11.9 Analog and digital

ground (in amplifier

isolated from GND in

order to prevent

ground loops)

GND Input 0 V X11.2 Amplifier ground

/AC_FAIL Output Open collector,

I ≤ 10 mA (with ESD

protection),

Ri ≤ 100 Ω,

U≤12 V low: ≤ 2.5 V at

10 mA

X11.10 AC voltage phase

monitor

open: AC OK

low (≤ 2.5 V): No AC,

phase failure, over-

voltage and under-

voltage relative to

CAN_GND

RESET

(Not used in Rohde & Schwarz

generation 9 transmitters)

Input 0 V to 5 V,

≤ 5 mA

Ri approx. 3.3 kΩ

(optocoupler input)

X11.3 high (≥ 1 mA, ≥

3.0 V): Reset, resets

the stored messages

TEMP_FAIL and

REFLECTION rela-

tive to ADGND

AMPL_ON

(Not used in Rohde & Schwarz

generation 9 transmitters)

Input 0 V to 5 V,

≤ 5 mA

Ri approx. 3.3 kΩ

(optocoupler input)

X11.11 high (≥ 1 mA, ≥

3.0 V): Amplifier ON;

relative to ADGND

VREF_PWR

(Not used in Rohde & Schwarz

generation 9 transmitters)

Input 0 V to 5.58 V, relative

to ADGND

RL = 74,4 kΩ

, 4 V = nominal value

X11.4 Reference voltage

for output power, rel-

ative to ADGND

PEAK_AV Input 0 V to 5 V,

≤ 5 mA

Ri approx. 3.3 kΩ

(optocoupler input)

X11.12 Peak/AVG measure-

ment toggling;

high: (≥ 1 mA, ≥

3.0 V): PEAK posi-

tion;

low: AV position; rel-

ative to ADGND

X11: Amplifier Control Unit; 15-pin D-Sub connector (rear)

R&S PMU901 Interface Description

R&S® TMU9

123System Manual 2600.5423.02 ─ 01

Signal

Name/Description

Direc-

tion

Value range Connection

point

Remarks

SHUT_DOWN Input 0 V to 13 V,

≤ 5 mA

Internal pull-up to

CAN_V+ via optocou-

pler

X11.5 Amplifier emergency

shutoff,

open: amplifier inac-

tive (mute) low (≥

2 mA, ≤ 3.0 V): Ampli-

fier in normal mode,

relative to CAN_GND

CAN_GND Input 0 V ± 1 V X11.13 CAN ground (isola-

ted from GND)

CAN_L Bidirec-

tional

CAN_L X11.6 CAN low

CAN_H Bidirec-

tional

CAN_H X11.14 CAN high

CAN_V+ Input + 12 V ± 1 V,

≤ 40 mA (for 100 %

dominant level)

typical: 15 mA

X11.7 CAN transceiver sup-

ply; relative to

CAN_GND (isolated

from GND)

/AC_OK Output Open collector,

I ≤ 10 mA (with ESD

protection via Zener

diode),

Ri ≤ 100 Ω,

U≤12 V low: ≤ 1.5 V at

10 mA

X11.15 AC voltage phase

monitor

low: AC OK

open: No AC, phase

failure, overvoltage

and undervoltage rel-

ative to GND

SORT2 Bidirec-

tional

0 V to 13 V X11.8 Sort PIN 2, relative to

CAN_GND,

<1 V: low,

>8 V: high

X11: Amplifier Control Unit; 15-pin D-Sub connector (rear)

R&S PMU901 Interface Description

R&S® TMU9

124System Manual 2600.5423.02 ─ 01

X11: Amplifier Control Unit; 15-pin D-Sub connector (rear)

Rohde and Schwarz TMU925 UHF DTV ATSC 1KW TO 2.5 KW TRANSMITTER FAMILY User Manual Part 2

Rohde & Schwarz Inc UHF DTV ATSC 1KW TO 2.5 KW TRANSMITTER FAMILY Part 2

Contents

User Manual Part 2

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