Zetron UT-4E500 MT-4E T-Band (470 to 512MHz) Transmitter User Manual Part 2

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Application ID	qkxX3k7Hn/AS2Ih0XBcljg==
Document Description	User Manual Part 2
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Document Type	User Manual
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Date Submitted	2007-04-19 00:00:00
Date Available	2007-06-03 00:00:00
Creation Date	0000-01-01 00:00:00
Producing Software	Avision AVCapture
Document Lastmod	2007-04-20 11:23:58
Document Title	User Manual Part 2
Document Creator	Avision AVCapture

35 | Hardware Tuning and Troubleshooting
48 PIN MOTHERBOARD INTERFACE CONNECTOR
A48 pin connector is used for interfacing the MT-3 Motherboard to the receiver and transmitter.
Receiver
Pin Name Pin Name Pin Name
02 Relay Normally Open 1 [cm] 52 43.8 VDC [llP] zz 43.3 VDC [IIP]
D4 Relay Comon 1 [om] 54 Receive Sect-e 1 Clear [om] z4 No Connect
DB Relay Nonnelty Closed 1 [OF] 36 40.5 VDC [l/P] zs “35 VDC [UP]
08 Relay Normally Closed 2 [on] as No Connect 28 No Connect
010 Relay Carmen 2 [OIP] 510 Discrirnirlahr LPF [OIP] 210 No Connect
012 Relay NmnatlyOpen 2|on>1 512 COR' top] 212 COR'[OIP1
Du Clear Keys 1' [UP] 514 Discriminaw [om 214 Squelctl menia- [I/Pl
DIE Clear Keys 2' [IIP] E16 No Connect Z|6 Na conned
D18 No Connect 518 No Connect 118 Bank AIE' [IF]
uzn cnannel Selew) (LSB) WP] am we SpenkelAudo [OIP] zzo Na Conner:
Dfl Channel Seled 1 [UP] 822 Mo Conner: 222 No Connect
024 cnannel Select 2 WP] 524 Signal snenqtn (RSSI) [up] zzr AID Receive Made [on]
025 Channel Select 3 (M35) [IIP] 826 Balanced Audlo 1 [DIP] 226 BalancedAudio 2 [OIP]
pm No Connect 323 Mute‘ [IIP] 228 No Connect
D30 N0 Calm 530 Ground 230 Ground
D32 Nn Connect 532 Ground 232 Ground
Transmitter
Pin Name Pit Name Pin Name
D2 No Cmnem B! 013.8 VDC [IIP] 2 +118 VDC [IIP]
D4 No Connect 34 MitsznCneAndio ompuuop] 24 WophmlAutiolnpan/P]
Ds No Connect 56 Q5 VDC WP] 15 495 me [up]
08 No Connect ea Isolated Positive Pl'l [IIP] 28 Isolated Negalrve PTT [IIP]
D10 No Connect BIO PTT' [up] 210 P‘I'I" [IIP]
D12 Nln Connect Bl? BankAIB" [IIP] 212 Bank NB' [IIP]
D14 clearKeys1'[l/P] BM PTT' [VP] Z14 PTT" [IIP]
D16 Clear KEyS 2' [UP] BIS No Connect 116 No conned
D18 No Connect BlB Balanced Audio 2 [IIP] 118 Balanced Audio 1 [UP]
D20 Channel Select 0 (LS!) [IIP] B20 SM»3 Speakerkudlo [IIP] 220 No Connect
D22 Channel Seleet1 [IIP] BIZ Subtone WP] 222 N0 Connect
024 Channel Select 2 [IIP] 524 PTT 0mm)!" [WP] 224 Tralsmll Secure I Clear' [UP]
026 cnennel Select 3 pass) [up] 326 Forward Power Alamv' [om] zzs High vsz Alarm‘ [DIP]
D28 No Onnnect 528 No Connect 220 ND Mode Control [IIP]
D30 No Cannon B30 Gmund 230 Ground
D32 No Connect 532 Ground 232 Ground
' Indicates an active low signal.
D="‘ MT-4E VHF Ge UHF Receiver ll Trsndmm Inmuction Manual
— IMBB—M'FlE-TXRX
Hardware Tuning and Troubleshooting 37
RECEIVER TROUBLESHOOTING
The receiver is composed 014 main components; the Receiver Main Board, the Synthesizer Module,
the RF Preselector, and the Universal Daughter Board (UDB). An optional Decryption Board can be
installed in the Receiven
These steps will help you determine the most likely sub-assembly that domains a taultt and may help
you determine what that fault is. The sub-assembly or the entire receiver can be sent back to Daniels
Service section for repair. Contact Daniels Service section before returnan any product.
Before testing, the receiver should be In the subrack, or connected to the subrack by means at an
Extender card or kit, and the main powerto the system (+138 VDC) and the +95 VDC regulated
supply should be checked via the tront panel of the System Regulator.
Complete Receiver
Flip the receiver front panel ONIOFF switch from the OFF position to the NORM position and check
that the two tront panel LEDs both turn ON for less than 5 seconds and then turn OFF. If this is not
the case, the most likely fault is on the UDB, on the Synthesizer, or on the Receiver Main Board. At
this stage make sure that the UDB and the synthesizer module are properly seated on the Receiver
Main Board.
Connect the Receiver to the PC with the USB cable and run the Radio Service Software (RSS).
Select (P25 orAnelog) Receiver, click on Configure, then click on Read to read the Receiver
configuration. it the RSS returns “Device Not Responding", physically inspect the USE cable and
connection, check the Daniels USE driver. and check that the USB is recognized by the Device
Manager. If the RSS still does not recognize the connection. the most likely fault is on the UDB.
Click on Rx ID. then click on Read to read the Receiver ID. Conflnn that the Frequency Band in the
Synthesizer ID Model Number matches the Frequency Band in the Receiver Global Settings. It the
settings do not match, the synthesizer will require replacement, or the programming will need to be
changed to match the synthesizer hardware.
If the receiver still is not functioning properly the module level check should be conducted in the
following order:
MT-4E VHF & UHF Receiver & Transmitter Instruction Manual ] D="
IMna-MT-AE-TXRX —
33 Homers Tuning and Troubleshooling
Receiver Main Board
Check the following test points on the receiver Main Board:
Test Point Signal Monitored Typical Voltage
TP1 Voltage from motherboard +133 VDC line +10 to +17 VDC
TP2 Regulated W‘s VDC from motherboard 09.5 VDC 1: 5 %
TP9 Switched +138 VDC line from from panel switch +10 to +17 VDC
TP37 +o.o VDC supply x~5.o VDC 1: 5 %
TP38 43.0 voc suppry ~s.o voc : 5 %
TP54 03.3 VDC supply +3.3 VDC t 5 %
TP55 +12 VDC supply ¢1.2 VDC 1 5 %
TPss +1.e voc supply +1 .8 VDC 2 5 %
TP57 +25 VDC supply +2.5 VDC 1 5 %
TPse +540 voc supply +5.o voc e 5 94.
Test Points are shown on the MT-4E Receiver Jumper and Test Point Locawr Illustrations
It the test point voltages are within the specified range the following tests further verify that the
Receiver Main Board may not be the source of problem
Apply an IF signal of frequency 21.4 MHz at a level 01-30 dBm to the Receiver Main Board IF input
SMB connector as shown on the MT-4E Receiver Top Component View (2). If the signal is properly
demodulated it proves that the Receiver Main Board and UDB are in working oonditlon. Proceed to
the following step:
D=W MT4E VHF & UHF Receiver A Transmilter lndrumlon Manual
— IMO$MT~4E—TXRX
Hardware Timing and Troubleshooting 39
Synthesizer and UDB Modules
The Synthesizer module and UDB are bound together through their communication link At this level
cffautt diagnosis it is not feasible to isolate the problem between two units
lithe receiver from panel ON/OFF switch Is set from the OFF position to the NORM position and the two
front panel LEDs stay on. check that the Synthesizer and the UDB are properly seated on the Receiver
Main Board and check the following test point; on the UDB (to access the UDB, the shield Ild covering
the UDB will need to be removed as shown on the MT~4E Receiver Bottom Component Wew):
Test Point Signal Monitored Typical voltage
TP2 Logic power +33 VDC 1 5 %
TP3 DSP core supply 01.2 VDC : 5 %
TP4 CPLD core supply +1 .8 VDC 2 5 %
Test Points are shown on the MT—4E Receiver Jumper and Test Point Locator Illustrations.
It the UDB voltages are not within the specified tolerances. it is mofi likely that the Receiver Main
Board (that supplies these voltages to the UDB) is faulty or there Is a short within the UDB.
It the UDB voltages are within the specified tolerances. inject a -70 dBm carrier on the Receiver
frequency into the RF Input and check the RSSI Meter reading In the Service seflion of the RSS. if
the RSSI Meter reading is low (< 30). perform the following test to verify that the synthesizer Is locked
on frequency:
Disconnect the L0 output SMB connector from the Synthesizer to the RF Preselector. as shown on
the MT—4E Receiver Top Component Mew (1), and connect the Symhesizer Lo output to a radio
communication test sets Confirm that the synthesizer LO frequency matches the Target Synthesizer
RF OUT found in the Reference Oscillator area of the Service section on the RSS. The L0 output
should be approximately t7 dBm.
Check that the LO output (21.4 MHz above or below the receiver frequency) of the synthesizer
module is within the receiver frequency tolerances of t 1.0 ppm (VHF) I x 0.5 ppm (UHF). and that
the RF frequency will change with programmed channel changes in the RSS. If this is not the case. it
is most likely that the synthesizer or the UDB or both are faulty. The fault may be associated with the
synthesizer code. the DSP Code or both
Receiver RF Preseiector
Check the +9.5 VDC Power Supply wire to the RF Preselector as shown on the MT-4E Receiver Top
Component Wew (2). The supply voltage should be +95 VDC 1 5 %, iniect a -30 dBm carrier on the
Receiver frequency into the RF Input and check the IF Output of the RF Preseiector as shown on
the MT—4E Receiver Top Component View (2) is 21.4 MHz and it can be demodulated through the
communication test set. tfthis is not the case the synthesizer. the RF Preselector or both are faultyi
To further isolate the fault, the L0 output as shown on the MT~4E Receiver Top Component Wew (1)
can be disconnected from the Synthesizer. and an L0 input can be applied from an extemai source to
the RF Preseiector. The frequency of the external L0 input should be the Target Synthesizer RF OUT
found In the Reference Oscillator area of the Service section on the Rsso Check the 214 MHz output
of the module using a communication test set.
MT-AE VHF a UHF Receiver 3. Transmitter iii-warm Manual | —~
IMOG-MT—AEJXRX n:
40
DE"
. ease-t as mm»
| Hardware Tunlng arid Troubleshootlng
TRANSMITTER TROUBLESHOOTING
The Transmitter is composed of 4 main components, the Transmitter Main Board, the Synthesizer
Module, RF PowerAmplifier and Universal Daughter Board (UDB). An optional Encryption Board can
also be installed in the Transmitten
These steps will help you determine the most likely sub-assemny that contains a fault. and may
help you determine what that fault is. The sub-assembly or the entire transmitter can be sent back to
Daniels Service section for repair. Contact Daniels Service section before returning any product.
Before testing, the transmitter should be in the subraok. or connected to the subrack by means of
an Extender card or kit, and the main powerto the system (+1311 VDC) and the +95 VDC regulated
supply should be checked via the front panel of the System Regulator. The transmitter RF output
should be terminated with a 50 (2 load, or communications test set
Complete Transmitter
Flip the transmitter front panel NORMAL/OFF! KEY TX switch from the OFF position to the NORMAL
position and check that the two front panel LED: both turn ON for less than 2 seconds and then turn
OFF. If this is not the case. or the hansmitter is not functioning properly, the following steps can be
taken:
Connect the Transmitter to the PC with the USB cable and run the Radio Service Software (R88)
Select (P25 or Analog) Transmitter click on Configure. then click on Read to read the Transmitter
configuration, It the RSS retums “Device Not Responding”, physically inspect the USB cable and
connection. check the Daniels USB driver, and check the connection through the Device Manager. It
the RSS still does not recognize the connection, the most likely fault is on the UDB,
Click on Tx ID, then click on Read to read the Transmitter ID. Confirm that the Frequency Band in the
Synthesizer ID Model Number matches the Frequency Band in the Transmitter Global Settings. It the
settings do not match, the synthesizer wlIl require replacement, or the programming will need to be
changed to match the synthesizer hardware.
If the transmitter still is not functioning property the module level check should be conducted in the
following order:
W4E VHF & UHF Receiver & Transmitter Instruuiorl Manual
lMOB—MT-AE-TXRX
Hardware Tuning and Troubleshooting 41
Transmitter Main Board
Check the following test points on the Transmitter Main Board:
Test Point Signal Monitored Typical voltage
TP1 Voltage from motherboard +118 VDC line +10 to 4-17 VDC
TP2 Regulated +95 VDC from motherboard +9.5 VDC 1 5 %
TP3 USB connector power +10 VDC or +50 VDC
TP4 Switched 013.8 VDC line from front panel switch +10 to +17 VDC
Test Points are shown on the MT-eE Transmitter Jumper and Test Point Locator Illustrations.
If the test point voltages are within the specified range. it is most likely that the Transmitter Main
Board is not the source of problem, Proceed to the following step:
Synthesizer and UDB Modules
The synthesizer module and UDB are bound together through their communication link. At this level
of fault diagnosis it is not feasible to isolate the problem between two units.
Ifthe transmitter front panel NORMAL/OFF! KEY TX switch is set from the OFF position to the
NORMAL position and the two front panel LEDs stay on. check that the Synthesizer and the UDB
are properly seated on the Transmitter Main Board and check the following test points on the UDB
(to access the UDB, the Ampllfer sub-assembly and the shleld lld covering the UDB will need to be
removed as shown on the MTAE Transmitter Amplifier Removed Mew):
Test Point Signal Monitored Typical Voltage
TP2 Logic power +313 VDC 2 5 %
TP3 DSP core supply +12 VDC 1: 5 %
TP4 CPLD core supply +1.8 VDC 1 5 %
Test Points are shown on the MT~4E Transmitter Jumper and Test Point Looetcr Illustrations.
Ifthe UDB voltages are not within the specified tolerances. the Transmitter Main Board (that
supplies these voltages to the UDB) is most likely faulty. If the UDB voltages are within the specified
tolerances, it Is most likely tint the synthesizer or the UDB or both are faulty. The fault may be
associated with the synthesizer code, the DSP Code or both.
MT4E VHF & UHF Receiver i!- Transmitter Instruction Mlnuil I -"‘
mom-45mm D=
42 Ham-re Tunina and Troubleshooting
DE
if the transmitter front panel NORMAL/OFF! KEY TX switch is set from the OFF position to the
NORMAL position and the two front panel LEDs both turn ON for less than 2 seconds and then turn
OFF and the RF output power control is set at its maximum in the Power Levels area of the Service
section on the RSS, but the RF output power is considerably less than 8 W:
check that the synthesizer Reference Oscillator is set to internal reference in the System Setup;
Jumper Settings area of the Service section on the RSS.
check that the output of the synthesizer module on the RF cable as shown on the MT—4E Transmitter
Bottom Component Wow is 0 dBm (1 2 dBm) and that the RF frequency will change with programmed
channel changes in the RSS. If this is not the case, it is most likely that the synthesizer or the UDB or
both are faulty. The fault may be associated with the synthesizer code, the DSP Code or both.
Transmitter Amplifier
Set the front panel switch on the transmitter to KEY TX and check that the Transmitter Output Power
is set appropriately (0.5 to 5.0 W). The output power can be adjusted in the Power Levels area ofthe
Service section on the RSS.
Check the following pins on connector J1 (while the transmitter is keyed):
Pin Signal Monitored Typical voltage
1 RF Enable I Power Control 00.5 to t3.0 VDC +05 to +10 VDC
corresponds to 0.5 to 8.0 W RF Power Output)
2 Regulated +9.5 VDC from motherboard 69.5 VDC 1: 5 56
3 Voltage from motherboard +133 VDC line +10 to +17 VDC ‘
Pins are shown on the MT-4E Transmitter Bottom Component View
It Pin 1 is not within tolerance, the most likely fault is in the UDB or Synthesizer module. lf Pins 1, 2
and 3 are within the specified tolerances, and there is no RF output power, the most likely fault is in
the Amplifier.
To test the RF power amplifier sub-assembly, set the output power to maximum, using the Power Level
Adjustments in the Service mode of the RSS software and drive the input at the amplifierwith a 0 dam
RF signal. Check that the RF power output is 8.0 then the front panel switch is set to KEY TX.
"‘ MT-4E VHF B- UHF Receiver St Transmitter Instruction Manual
menus-max
Hamwm Tuning and Troubleshooting 43
SYSTEM TROUBLESHOOTING
It the radio system is not receiving or transmitting on the right frequency, check the Channel and Bank
select lines of the Receiver and Transmitter modules. The Motherboard has jumpers that allow one of
16 channels to be selected on a receiver or transmitter: The lactory default is to have them all set to
ground the channel select lines CSELD-S, forcing the radio to operate on channel 1. On the receiver
and transmitter there is also a BankA/B line which usually than high selecting Bank A The receiver
and transmitter have separate control of their channel select lines, so changing receiver channels
does not affect the transmitter channel.
It the Radio Service Software is failing partway through a read or write of the receiver, check that the
receiver is not squelohing and unsquelching repeatedly during the read orwrite operation, Disconnect
the RF signal source from the receiver during the read or write operation.
MTJE VHF & UHF Rlesivor l. Transmitter lnstmmiofl Manual | D=“‘
IMOB-MT-4E-TXRX -
44 This Page Intentionally Len Blank
D="‘ MT-AE VHF & UHF Receiver A Transmitter Instmdifln Manual
- IMOG-MT-4E-TXRX
45
RADIO SYSTEM
CONFIGURATIONS
REPEATER
The MT~4E series Receivers and Transmitters may be configured in a repeater configuration. The
standard way of setting up a repeater system Is to connect the receiver to the transmitter through a
Radio Interconnect Cable plugged into the RJ45 CNTL BUS connectors on the front panels ct each
radio module This cable routes Analog and Digital COR ! PTT signals and LVDS Serial Data from
the receiver to the transmitter in both Analog and P25 Digital mode. The Radio Interconnect cable
may be connected directly from the receiver to the transmitter: or may be routed through a Repeater
Control Card.
Atypical configuration is to set up the repeater to rte-transmit an incoming signal in the same mode as
it is received (Let normally, you would want a recelved analog signal to be repeated as analog and a
recein digital signal to be repeated as digital). This requires the Receiver and Transmitter modules
to be programmed in Mixed Mode of operation through the RSS software. The repeater may also be
programmed to operate in analog or P25 digital mode only.
Mixed Mode Repeat operation occurs as follows:
1. The receiver determines whether an incoming signal is analog or digital and asserts either theANALOG
COR or DIGITAL OCR signal line on the front panel RMS CNTL BUS connector. LVDS Serial Data is sent to
the RJ45 CNTL aus oonneaor as well.
The COR signal and LVDS Serial Date is transferred over the Radio Interconnect Cable direaly to the
Transmitter or is routed through a Repeater Control Card.
!-"‘
The transmntar senses the incoming ANALOG PTI' or DIGITAL PTI' signal from the front panel RJ45 CNTL
BUS connencr and keys up in analog mode of P25 digital mode. LVDS Serial Data is routed through the
tmnsmitter for transmission.
An alternate way at setting up a repeater system is to connect the reoeiverto the transmitter through
an Audio Control Card or Base Controller. These control cards route analog audio and a single
COR / PTT signal from the receiver to the transmitter. This configuration is recommended for analog
repeater systems only.
The receiver and transmitter have no connection between them apart from the audio (Audio Control
Card or Base Controller only), COR I PTT signals and LVDS Serial Data lines. The transmitter does
not get any information from the receiver about which frequency or channel numberto key up on.
The receiver and transmitter channel is determined by the state of the channel select lines and bank
select line.
MT-4E VHF Ci UHF Receiver A Transmmel‘ Instruction Manual I D_"‘
Amos-Mue-rxsx =
46 l Repeater System Configuration
ANALOG FIXED (BASE)
STATION INTERFACE
The MT-4E series Receivers and Transmilters
may be configured in a fixed (or base) station
configuration with an analog Interface. An Audio
Control Card or Base Controller is added to
the system for E E. M control. For Tone Remote
control at the system. 3 Tone Remote Adapter Is
added to the system along with the Controller.
The Audio Control Card or Base Controller will
also allow for repeat capability of the system
using analog audio as the repeat path.
The Base Controller is used for system control
of encryption and decryption of the P25 digital
voice messages (the optional decryption!
encryption boards are required in the receiver!
transmitter modules).
DIGITAL FIXED (BASE)
STATION INTERFACE
The MT-4E series Receivers and Transmitters
may be configured in a fixed (or base) station
configuration with a digital interface. A Universal
Interface Card is added to the system for
Ethernet control.
D="‘| MT—4E VHF s UHF ReneiverLTrarlsmmel‘ Imtmctlon Manuel
- IMDB—MT-4E~TXRX
41
ILLUSTRATIONS
PRINTED CIRCUIT BOARD
NUMBERING CONVENTION
Daniels Electronics Ltd. has adopted a printed
circuit board (PCB) numbering convention in
which the last two digits oi the circult board
number represent the circuit board version. All
PCB's manufactured by Daniels Electronics Ltd.
are identified by one oftne following numbering
conventlons:
PCB number 43-912010
Indicates circuit board version 1.0
PCB number 50002422
Indicates circuit board version 2
(no decimal version)
MT-AE VHF & UHF Rmivar & Transmitter Instruction Manual | _-"'
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