Trimble ELIZABETH35 Hi Power Low Band Transmitter User Manual 568454

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User Manual Low band RF Power Amp

Vytek TRM-1 PRD 1

TRM-1

Low-band RF Power Amplifier

Product Requirements Document

Revised August 20, 2003

Vytek Wireless

Wireless Products Division

2310 Cousteau Court

Vista, CA 92083, USA

(760) 536-1000

www.vytek.com

Formatted

Deleted:

Deleted: Version 1A¶

Deleted: A

ril 147, 200331057

Deleted: May 3, 2003

Deleted: Jul

1, 2003nel

Deleted: T

Vytek TRM-1 PRD 2

TABLE OF CONTENTS

Technical Brief.....................................................................................................................3

Scope................................................................................................................................3

Functionality ....................................................................................................................3

Design Philosophy ...............................................................................................................3

Robustness .......................................................................................................................3

Implementation and Construction....................................................................................3

Operation..........................................................................................................................4

Specifications.......................................................................................................................4

Hardware Block Diagram ....................................................................................................6

Interface Definitions ............................................................................................................7

Power Supply Connector .................................................................................................7

Power Amplifier Module Connector ...............................................................................8

Filter / Coupler Module Connector..................................................................................8

Rear Panel DC Power Connector.....................................................................................9

Rear Panel RS232 Connector...........................................................................................9

Controller Connections ..................................................................................................10

FPGA Register Definitions............................................................................................12

Software Description .........................................................................................................13

Alarms Types & Behavior .............................................................................................13

Power Amplifier Alarms............................................................................................13

Power Supply Alarms ................................................................................................15

“Push” Enabling for alarm conditions ...........................................................................15

Alarm Algorithms ..........................................................................................................16

State Machine.................................................................................................................17

PA Cutover.....................................................................................................................18

Manual PA/PS Offline ...................................................................................................18

Serial Port Commands available to User .......................................................................19

LEDs ..................................................................................................................................20

LIST OF TABLES

Table 1: Specifications............................................................................................................................................ 5

Table 2: Power Supply Connector .......................................................................................................................... 7

Table 5: Power Amplifier Connector...................................................................................................................... 8

Table 6: Rear Panel RS232 Connector ................................................................................................................... 9

Table 7: Power Amplifier Alarms......................................................................................................................... 13

Table 8: Serial Port Commands available to User................................................................................................ 19

Formatted

Deleted: Technical Brief 3¶

Scope 3¶

Functionality 3¶

Design Philosophy 3¶

Robustness 3¶

Implementation and Construction 3¶

Operation 4¶

Specifications 4¶

Hardware Block Diagram 6¶

Interface Definitions 7¶

Power Supply Connector 7¶

Power Amplifier Module Connector 8¶

Filter / Coupler Module Connector 8¶

Rear Panel DC Power Connector 9¶

Rear Panel RS232 Connector 9¶

Controller Connections 10¶

FPGA Register Definitions 12¶

Software Description 13¶

Alarms Types & Behavior 13¶

Power Amplifier Alarms 13¶

Power Supply Alarms 15¶

“Push” Enabling for alarm conditions 15

Alarm Algorithms 16¶

State Machine 17¶

PA Cutover 18¶

Manual PA/PS Offline 18¶

Deleted: Technical Brief 3¶

Scope 3¶

Deleted: Technical Brief 3¶

Scope 3¶

Deleted: Technical Brief ¶

Scope ¶

Deleted: Technical Brief 3¶

Scope 3¶

Deleted: Technical Brief ¶

Scope ¶

Deleted: Technical Brief 3¶

Scope 3¶

Deleted:

Deleted: 10

Deleted: 14

Deleted: 20

Deleted: Table 1: Specifications 5¶

Table 2: Power Supply Connector 7¶

Deleted: Table 1: Specifications 5¶

Table 2: Power Supply Connector 7¶

Deleted: Table 1: Specifications ¶

Table 2: Power Supply Connector ¶

Deleted: Table 1: Specifications ¶

Table 2: Power Supply Logic

... [2]

... [5]

... [6]

... [12]

... [11]

... [13]

... [4]

... [14]

... [8]

... [15]

... [9]

... [16]

... [7]

... [17]

... [1]

... [18]

... [10]

... [19]

... [3]

Vytek TRM-1 PRD 3

Technical Brief

Scope

The scope of this PRD is to describe the technical implementation of a custom modular Low-Band RF Power

Amplifier Unit. The PA is part of a wide-area data network base station. It is non-linear, with redundancy

built-in for extra reliability and up-time.

Functionality

The amplifier takes in a constant-envelope (CE) RF signal at a level of approximately 5dBm, and amplifies it to

a level of 56dBm (400 watts). The amplifier module and the power supplies are all fully redundant. A CPU

monitors the amplifier, manages alarms, and controls the switching of redundant circuits.

The internal CPU provides a Command Line Interface (CLI) via an RS-232 serial port, for an external device to

monitor and control its operation.

The Amplifier runs off of 90-130V AC input. The CPU controller will also operate off of an external DC input,

if available.

Design Philosophy

Robustness

The design will incorporate, to the extent feasible and cost effective, margin against the specified criteria. In

each case the margin is determined from the expected normal variations in manufacturing parameters and

device variations as they apply to the design. Additionally, the product incorporates robust circuit design to

require minimal alignment or tuning during test. To the extent possible, all components will be surface mount

and utilize multiple source parts.

The amplifier must self-protect against all fault conditions. In particular, care is taken to prevent damage due

to:

1. Reverse DC voltage

2. RF overdrive

3. High VSWR on output

4. Over-temperature

5. Failure of any LRU

Implementation and Construction

The amplifier is divided into these sections, each section capable of being tested by itself.

1. Two field replaceable 500 watt RF Amplifier Modules.

2. An RF switch to select which output stage is routed to the antenna.

3. Lowpass Filter and RF wattmeter with directional coupler.

4. DC monitoring (current and voltage)

5. CPU Controller (bias voltage generation, AGC management, monitoring, CLI, alarming…)

6. Two field replaceable AC power supplies.

Formatted: Bullets and Numbering

Deleted: ¶

John Sonnenberg¶

Vytek Wireless¶

Vista, CA ¶

Page Break

Deleted: Final PA

Deleted: circuit

Deleted: ,

Deleted: y circuit, the cooling fan, and

the driver circuit

Deleted: Page Break

Vytek TRM-1 PRD 4

Operation

The amplifier should look like a gain block, with some AGC for power leveling.

It powers up in the “on” state.

Specifications

Parameter Customer Specification Design Goals Notes

System

Temperature Range 0 to +50 C ambient -30 to +60 C

Shock So LRUs can be easily packed and

shipped via Fedex

Size 19” open telecom rack mount

TBD height

19” rack mount, 6 U tall, 17” deep.

Weight TBD <50 lbs

Line Replaceable Units PAs/Drivers, Fans, AC-DC Supplies PAs/Drivers, Fans, AC-DC Supplies Plug-in LRUs are hot swappable

MTBF

25,000 hours for soft failures

80,000 hours for hard failures

50,000 soft fail

100,000 hrs hard-fail

Soft failures don’t degrade performance.

Room temperature calculations.

Time To Repair 10 minutes max to replace LRU to fix

soft failure

2 minutes to replace LRUs

EMC, Line Faults and

Lightening Protection

UL Approved AC power supply

Lightening protection on RF output

UL Approved AC power supply

Lightening protection on RF output

15kV ESD on all other I/Os

Hot Standby stages PA, Driver, Fan, AC-DC converter PA, Driver, Fan, AC-DC converters

Power Amp

Power Line Input 110 VAC; 60 Hz

< 10 Amps

90-130VAC, <10A at 110Vac

AC Power Switch and

Breaker

On front or rear panel Rear Panel Bump-proof

Frequency Range 35.15 to 35.75 MHz 32-38 MHz No tuning

Input Signal +5 dBm (+/-3 dB)

50 ohms

single carrier

constant envelope phase modulation

< 40 kHz bandwidth

nominally 2 Hz pulse with 99% duty

<-30dBm in OFF mode,

Rise/Fall time < 5 mS and >100uS

+5 dBm (+/-3 dB)

50 ohms

single carrier

constant envelope phase modulation

< 40 kHz bandwidth

nominally 2 Hz pulse with 99% duty

<-30dBm in OFF mode,

Rise/Fall time < 5 mS and >100uS

Input Connector Panel-mount N-Type female TNC female

Output Power 400 W (+/- 1 dB) Programmable 250-500 watts +/- 1dB

0-50C; +/-1.5dB –30 to +60 C

Harmonics and Spurious Per FCC 22.359 (b)(1)

with 10 dB margin for +/- 50 kHz

Also, close-in spurs (+/- 15 kHz) < -45

dBc

Per FCC 22.359 (b)(1)

with 10 dB margin for +/- 50

kHz

Also, close-in spurs (+/- 15 kHz) < -

45 dBc

Assume “authorized bandwidth” of 20

KHz

Test with pure carrier

Do we need additional limits such as

those for Unintentional Radiators or

Restricted Bands as specified in Part 15?

Harmonic Filter All harmonics up to 500MHz, <80dBc Some tower contracts require the use of

a “harmonic filter.” While the

performance of this device isn’t

specified, we should have something in

the P.A. that we can point to and call a

“harmonic filter.”

Type Approvals None None Trimble will take responsibility for this

Output Impedance 50 ohms 50 ohms

Output Match Operate into 2:1 VSWR

No damage into infinite VSWR

Operate into a 3:1. No damage into

infinite VSWR.

Output Connector 7/16 DIN female 7/16 DIN female

Duty Cycle 100 % 100% at up to 500 watts. Will not usually be operated below 50 %

Soft-fail cut-over < 2 Seconds Time to switch over to redundant back-

up circuitry.

Controller

Battery Power Input 10-16 VDC 10-32V Controller operates independent of AC

Formatted

Deleted: Expected Operating

Performance

Deleted: 5

Deleted: 6

Deleted: Multiple chassis may be

appropriate

Deleted:

Deleted: o

Deleted: N

Deleted: <500mS

Deleted: 00

Deleted: mS

Vytek TRM-1 PRD 5

< TBD Amps power to power amp. Battery MUST be

present in order to ensure operation of

controller when amplifier power is off.

Control Interfaces Serial port for local console

Serial port for local console,

38400 bps, N,8,1.

Measurements Voltages, currents, forward and

reflected RF power, temperature, fan

health, alarms, PA stage in use.

Voltages, currents, forward and

reflected RF power, temperature, fan

health, alarms, PA stage in use.

As appropriate on all fans, power

supplies, power amp stages

Alarms Via Control Serial port. Via Control Serial port. LED alarm

status.

Console Protocol VT100 over serial port

XModem or Ymodem for software

upgrading

VT100 over serial port

XModem or XModem/1k for software

upgrading

Network Protocols none none

Connectors DB9 female for console

DB9 Female

Firmware update Via serial port Via serial port

Soft-fail modes Fan monitoring

PA stage

Driver Stage

AC-DC converter

Fan monitoring

PA stage

Driver Stage

AC-DC converter

Failure of any one of these components

will not cause the amplifier to cease

operation.

Hard reset input Via RTS pin on Serial Port Via RTS pin on Serial Port or via

serial command. RTS reset ability

may be defeated by removal of

internal jumper.

Unit is operational when RTS is asserted

and held in reset when not asserted.

Internal Measurement

Accuracy

Power +/- 0.5dB

Voltage +/- 2%

Current +/- 5%

Temperature +/- 3 degrees

Power valid for VSWR < 1.15:1

RF leveling time constant

for changes in drive level.

<10 seconds.

Antenna Switching No “Hot Switching” Power Amplifiers must be in “standby”

or “off” state when changing the antenna

switch setting.

Table 1: Specifications Formatted

Deleted: 192

Deleted: o

Deleted: External alarm output.

Deleted: Ymodem

Deleted: E

Deleted: A PA failure may require a

3dB reduction of power output.

Deleted: i

Deleted: Volatage

Deleted: ¶

Vytek TRM-1 PRD 6

Hardware Block Diagram

Atmel

ATmega128

Processor

FPGA

Atmel

EP1K30

DAC Outputs

Voltage

Regulators

and

Switches

15 volts

5 volts

External

I/O

Connector

A/D Inputs

Controller Module

Power Supply

Module

110

VAC

Input

Alarm

LEDs

Fans

Power Supply

Module

48 volts

Battery

Input

10 to 18 volts

RF Input

TRM-1 Power Amplifier

VyTek Wireless

Control

Power

Amplifier

Driver

Temp

Sensor

Supply Power Analog Controls

and Status

LPF

Input Power

Limiting Amplifier

Power Amplifier Module

Power

Amplifier

Driver

Temp

Sensor

Supply Power Analog Controls

and Status

LPF

Input Power

Limiting Amplifier

Power Amplifier Module

LPF

RF Output Module

RF Output

Fwd Pwr Rev Pwr

Deleted: Page Break

Vytek TRM-1 PRD 7

Interface Definitions

Power Supply Connector

Pin Name Function

1 +Vout Output Voltage

2 +Vout Output Voltage

3 GND Output Return

4 GND Output Return

5 -Sense Connect to Ground

6 Vout Adjust Output Voltage Control. Vout = 59v – 2.42v – 1.8 x {Vout Adjust}

59v – 2.42v – 1.8 x {Vout Adjust = 5v} = 47.6 volts

7 OC Alarm Over Current Alarm

8 Iout Monitor Output Current Monitor. Iout monitor = Iout x 10-4. Not Connected.

9 Share Bus Connect with Share Bus of the other Power Supply. Not Connected.

10 Enable Low = Enable Power Supply. Floating or High = Turn Power Supply Off.

11 +Vout Output Voltage

12 +Vout Output Voltage

13 GND Output Return

14 GND Output Return

15 +Sense Connect to Output Voltage

16 NC No Connect

17 V Shift Voltage Shift Input. Connected to Vout.

18 OV Alarm Over Voltage Alarm

19 GND Output Return

20 Rect Fail High = Power Supply is OK. Low = Power Supply Failure.

21 +Vout Output Voltage

22 GND Output Return

23 GND Output Return

24 GND Output Return

25 SD0 Serial Data Option. Not Connected.

26 SD1 Serial Data Option. Not Connected.

27 AC Sense Low = AC is < 60 VAC. High if AC is > 60 VAC.

28 OV Adjust Over Voltage Adjustment Pin. OV Level = 60v – 1.2 x {OV Adjust}

60v – 1.2 x {OV Adjust = 5v} = 54 volts

60v – 1.2 x {OV Adjust = 8.3v} = 50 volts

29 Lamp Test Turn on all LEDs for Testing. Not Connected

30 On / Off Front Panel Power Switch Status. Low = On, High = Off

Table 2: Power Supply Connector

Formatted

Deleted: . Not Connected.

Deleted: ,

Deleted: 1

Deleted: ,

Deleted: 2

Deleted: Not Connected.

Deleted: 3

Deleted: OV Level = 60v – 2.2 x {OV

Adjust}

Deleted: Not Connected.

Deleted: 4

Deleted: 25

Deleted: Logic

Deleted: Controller: Power Supply

Logic Connector

Vytek TRM-1 PRD 8

Power Amplifier Module Connector

Pin Name I/O Function

A1 GND Input High Current Ground

A2 +48V Input High Current Power Supply (+48 volts)

1 Installed Output “Amplifier Installed” signal to the Controller.

Connected to Ground inside of the PA. Floats high when

module is not plugged-in.

2 Not Connected

3 V_out Output Low Current Power Supply Loopback to Controller

4 Amp_Select Input Amplifier Select Switching:

(+15 volts = Amplifier 1, Low = Amplifier 2)

Note: Internal pullup to +15 volts required.

5 +5V_Controller Input +5 volts from the Controller

6 RF_Detect Output RF Input Detector

7 Fan_On Input Fan Power On Signal (+28V = Fan On, 0V = Fan Off)

8 TX_LED Input Drive to the TX LED from Controller

9 RF_det_thresh Input RF Detector threshold voltage from Controller

10 Fan_2 Output Fan #2 Current Sensor Analog Signal

11 Address Input Amplifier Identification:

(0 = Amplifier 1, Float = Amplifier 2)

12 Amp_Bias Input Bias Voltage (Analog Control Signal from Controller)

13 Temp Output Temperature analog signal

14 Fan_1 Output Fan #1 current sensor analog signal

15 Alarm LED Input Alarm LED Digital Control Signal (0 = OK, 1 = Alarm)

Table 3: Power Amplifier Connector

Filter / Coupler Module Connector

Pin Name I/O Function

1 Ground

2 +5v_Controller Input +5 volts from Controller

3 Fwd Offset Input Bias Voltage for Forward Power Detector

4 Fwd Power Output Forward Power Detector Analog Signal

5 Rev Offset Input Bias Voltage for Reverse Power Detector

6 Rev Power Output Reverse Power Detector Analog Signal

7 NC

8 NC

9 NC

Formatted

Deleted: Table : Controller: Rear Panel

I/O Connector

Deleted: In1 Pwr

Deleted: Fwd Bias

Deleted: PA #1 Input Power Sensor

Analog Signal

Deleted: Forward Power Bias

Deleted: In2 Pwr

Deleted: Rev Bias

Deleted: PA #2 Input Power Sensor

Analog Signal

Deleted: Reverse Power Bias

Deleted: Driver

Deleted: +15V

Deleted: BiasDriver Bias

SignalTemp1PA #1 Temperature Sensor

Analog SignalTemp2PA #2 Temperature

Sensor Analog Signal

Deleted: Table : Controller: Control &

Status Connector¶

Deleted: <#>¶

Deleted: In Pwr

Deleted: Input Power Sensor Analog

Signal

Deleted: Driver Bias

Deleted: Temp

Deleted: DC Voltage… Out to PA

Deleted: Temperature Sensor Analog

Signal

Deleted: …

Deleted: Low = Amplifier 1,

Deleted: BiasA…

Deleted: d…

Deleted: S

Deleted: s

Deleted: elect D

Deleted: d

Deleted: igital

Deleted: …s

Deleted: 0…#1…1…#2

Deleted: a…s

Deleted: Gnd

Deleted: B

Deleted: analog

Deleted: d…s

Deleted: 5

Deleted: : Controller

... [21]

... [26]

... [22]

... [27]

... [29]

... [28]

... [20]

... [30]

... [24]

... [23]

... [25]

Vytek TRM-1 PRD 9

Rear Panel DC Power Connector

Pin Name Function

1 Monitor Controller Power Monitor (Don’t apply an

external voltage to this pin, but it may be

used to monitor the actual controller voltage

if desired.)

2 Gnd Ground

3 Gnd Ground

4 Battery Battery Backup Power (8 to 24 volts)

Rear Panel RS232 Connector

DB9 Female Connector

Pin Name Function

1 DCD No Connection

2 RXD Receive Data from the unit

3 TXD Transmit Data to the unit

4 DTR No Connection

5 GND Ground

6 DSR No Connection

7 RTS Active level enables the unit. Inactive level

resets the unit, Jumper Selectable

8 CTS No Connection

9 RI No Connection

Table 4: Rear Panel RS232 Connector Deleted: 6

Vytek TRM-1 PRD 10

Controller Connections

Pin Name I/O Logical Connection Function

J1-1 +5v Output Voltage Regulator +5 Volts from Controller

J1-2 Temp 2 Input CPU ADC2 Temperature Sensor Signal from Amp #2

J1-3 Gnd

Pin Name I/O Logical Connection Function

J2-1 Fan1 Input FANA MUX

to CPU ADC6

Fan #1 current sensor analog signal

J2-2 Fan2 Input FANB MUX to

CPU ADC6

Fan #2 current sensor analog signal

J2-3 Input FANC MUX to

CPU ADC6

Unused current sensor analog signal

J2-4 Fan_On Output FPGA Pin 130 ->

Q6 FET Switch

Fan Power On Signal

(+28V = Fan On, 0V = Fan Off)

J2-5 Alarm LED1 Output CPU PB0 Amp #1 Alarm LED Control Signal

(0 = OK, 1 = Alarm)

J2-6 Alarm LED2 Output CPU PB6 Amp #2 Alarm LED Control Signal

(0 = OK, 1 = Alarm)

J2-7 TX LED Output CPU PB2 Transmit LED (1 = On)

J2-8 Ground

J2-9 Rev Power Input CPU ADC1 Reverse Power Detector Analog Signal

J2-10 Rev Offset Output DAC U11-B Bias Voltage for Reverse Power Detector

J2-11 Output Voltage Regulators +5 Volts

J2-12 Ground

J2-13 TP16

J2-14 Amp Select Output CPU PB5 -> Q5

FET (Open Drain)

Amplifier Select Switching:

(Low = Amplifier 1, Hi-Z = Amplifier 2)

Pin Name I/O Logical Connection Function

J5-1 Power Input Voltage Regulators Input Supply Voltage (+28 volts nominal)

J5-2 Gnd Ground

J5-3 Gnd Ground

J5-4 Curr Sens Input CPU ADC5 Current Sensor Input

J5-5 +5v Output Voltage Regulator +5 Volts

Pin Name I/O Logical Connection Function

J15-1 Output Voltage Regulator +5 Volts (Analog)

J15-2 Ground

J15-3 (mod1_bias) Output DAC U13-A

J15-4 (mod2_bias) Output DAC U13-B

J15-5 (mod3_bias) Output DAC U13-C

J15-6 (mod4_bias) Output DAC U13-D

J15-7 Amp 1 Inst

(intspi_cs1)

Input FPGA Pin 59 0 = Amplifier 1 Installed

(Must be pulled up by FPGA.)

J15-8 RF_det_thresh

(drvr_stg_bias)

Output DAC U12-D PA RF Detector threshold voltage

Deleted: Select Digital

Deleted: 0

Deleted: off

Deleted: 1

Deleted: on

Deleted: CPU PB5 to

Deleted: FPGA Pin 135

Deleted: Hi-Z

Deleted: Low

Vytek TRM-1 PRD 11

J15-9 TP15

J15-10 Amp 2 Inst

(intspi_clk)

Input FPGA Pin 67 0 = Amplifier 2 Installed

(Must be pulled up by FPGA.)

J15-11 Fwd Power

(fwd_pwr)

Input CPU ADC0 Forward Power Detector Analog Signal

J15-12 Fwd Offset

(fwd_offset)

Output DAC U11-A Bias Voltage for Forward Power Detector

J15-13 PS1 AC

(intspi_reset)

Input FPGA Pin 70 Low = AC is < 60 VAC. High if AC is >

60 VAC.

J15-14 PS2 AC

(intspi_miso)

Input Inverter ->

FPGA Pin 68

Low = AC is < 60 VAC. High if AC is >

60 VAC.

J15-15 NC

J15-16 NC

Pin Name I/O Logical

Connection

Function

J16-1 Output Power Filter +5 Volts (Analog)

J16-2 Ground

J16-3 (mod1_bias) Output DAC U13-A

J16-4 (rms_threshold) Output DAC U11-C

J16-5 (peak_threshold) Output DAC U11-D

J16-6 PS1 Disable

(rms_alarm)

Output CPU PB4 0 = Enable Power Supply #1

1 = Power Supply #1 Off

J16-7 PS2 Disable

(peak_alarm)

Output CPU PB1 0 = Enable Power Supply #2

1 = Power Supply #2 Off

J16-8 Temp 1

(pd_temp)

Input CPU ADC3 Temperature Sensor Signal from Amp

J16-9 +15v Output Voltage Regulator +15 volts

J16-10 (phase_adjust) Output DAC U12-B

J16-11 Bias

(attenuation)

Output DAC U12-A Bias Voltage for Power Amplifiers

J16-12 Output Power Filter +5 Volts (Analog)

J16-13 (fuse_rms_offset) Output DAC U12-C

J16-14 (rffuse_reset) I/O CPU BP3

J16-15 NC

J16-16 NC

Pin Name I/O Logical

Connection

Function

J17-1 Ground

J17-2 PS1 Fail

(extspi_a5)

Input Inverter ->

FPGA Pin 43

0 = Power Supply Failure

1 = Power Supply is OK

J17-3 PS1 Switch

(extspi_a4)

Input Inverter ->

FPGA Pin 41

Front Panel Power Switch Status:

(0 = On, 1 = Off)

J17-4 PS2 Fail

(extspi_a3)

Input Inverter ->

FPGA Pin 39

0 = Power Supply Failure

1 = Power Supply is OK

J17-5 PS2 Switch

(extspi_a2)

Input Inverter ->

FPGA Pin 38

Front Panel Power Switch Status:

(0 = On, 1 = Off)

J17-6 RF Detect 1 Input Inverter -> RF Detected at Power Amplifier 1

Vytek TRM-1 PRD 12

(extspi_a1) FPGA Pin 37 (0 = No, 1 = Yes)

J17-7 RF Detect 2

(extspi_a0)

Input Inverter ->

FPGA Pin 36

RF Detected at Power Amplifier 2

(0 = No, 1 = Yes)

J17-8 PS1 OV

(extspi_clk)

Input Inverter ->

FPGA Pin 46

Over Voltage Alarm

J17-9 PS1 OC

(extspi_mosi)

Input Inverter ->

FPGA Pin 48

Over Current Alarm

J17-10 (extspi_miso) Output Inverter ->

FPGA Pin 47

J17-11 PS2 OV

(extspi_backplid0)

Input Inverter ->

FPGA Pin 83

Over Voltage Alarm

J17-12 PS2 OC

(extspi_backplid1)

Input Inverter ->

FPGA Pin 86

Over Current Alarm

J17-13 NC

J17-14 NC

J17-15 Ground

J17-16 NC

FPGA Register Definitions

Note that CS signal from CPU must be set high in order for the FPGA to be selected. This signal comes from

the CPU’s PE2 pin.

Address lines shown are used to select between the internal registers as defined below. All other address lines

are “don’t cares.”

A11 A10 A9 A8 Bit(s) R/W Function

0 1 0 0 0 Read NC – Read as 0

0 1 0 0 1 Read PS1 Front Panel Power Switch Status:

(0 = On, 1 = Off)

0 1 0 0 2 Read PS1 AC Detected (0 = No, 1 = Yes)

0 1 0 0 3 Read NC – Read as 0

0 1 0 0 4 Read NC – Read as 0

0 1 0 0 5 Read PS1 Over Voltage Alarm Input

(1 = OK, 0 = Alarm)

0 1 0 0 6 Read PS1 Over Current Alarm Input

(1 = OK, 0 = Alarm)

0 1 0 0 7 Read PS1 Status:

(0 = Failure, 1 = OK)

0 1 0 1 0 Read NC – Read as 0

0 1 0 1 1 Read PS2 Front Panel Power Switch Status:

(0 = On, 1 = Off)

0 1 0 1 2 Read PS2 AC Detected (0 = No, 1 = Yes)

0 1 0 1 3 Read NC – Read as 0

0 1 0 1 4 Read NC – Read as 0

0 1 0 1 5 Read PS2 Over Voltage Alarm Input

(1 = OK, 0 = Alarm)

0 1 0 1 6 Read PS2 Over Current Alarm Input

Deleted: 1

Deleted: 68h

Deleted: 1

Deleted: 68h

Deleted: 1

Deleted: 68h

Deleted: 1

Deleted: 68h

Deleted: 1

Deleted: 68h

Deleted: 1

Deleted: 0

Deleted: 1

Deleted: 68h

Deleted: 1

Deleted: 0

Deleted: 1

Deleted: 68h

Deleted: 1

Deleted: 0

Deleted: 1

Vytek TRM-1 PRD 13

(1 = OK, 0 = Alarm)

0 1 0 1 7 Read PS2 Status:

(0 = Failure, 1 = OK)

0 1 1 0 7-0 R/W Read / Write Scratch Register

0 1 1 1 0 Read Amp 1 Installed (1 = No, 0 = Yes)

0 1 1 1 1 Read RF Detect 1 (0 = No, 1 = Yes)

0 1 1 1 2 Read NC – Read as 0

0 1 1 1 3 Read NC – Read as 0

0 1 1 1 4 Read Amp 2 Installed (1 = No, 0 = Yes)

0 1 1 1 5 Read RF Detect 2 (0 = No, 1 = Yes)

0 1 1 1 6 Read NC – Read as 0

0 1 1 1 7 Read NC – Read as 0

1 0 0 0 0 Write Fan Control (0 = Off, 1 = On)

1 0 0 0 1 Write DAC_Enable

(0 = Disable DACs, 1 = Enable DACs)

1 0 0 0 2 Write Fan Select A Control

1 0 0 0 3 Write Fan Select B Control

1 1 0 0 7-0 Write DAC1

1 1 0 1 7-0 Write DAC2

1 1 1 0 7-0 Write DAC3

1 1 1 1 7-0 Write DAC4

Software Description

Alarms Types & Behavior

Power Amplifier Alarms

The table below lists all of the power amplifier alarm types and the cutover behavior of each alarm.

Table 5: Power Amplifier Alarms

Alarm Type

Status Byte

bit PA #1 Alarm Occurrence PA #2 Alarm Occurrence

Fan Failure 7 Cut to PA #2 Cut to PA #1

High Reverse 6Shutdown Shutdown

Low Pw

5 Cut to PA #2 Stay at PA #2

cut back and forth to PA #1

Overcurrent 3 Cut to PA #2 Cut to PA #1 & PA #2,"failcount" times

(to find non-cut condition)

Thermal 2 Cut to PA #2 Cut to PA #1

High Pw

1 Cut to PA #2 Cut to PA #1

Formatted

Deleted: 0

Deleted: 1

Deleted: 0

Deleted: 1

Deleted: 0

Deleted: 1

Deleted: #1 Low Byte

Deleted: 7-0

Deleted: Write

Deleted: DAC1 #1 High Byte

Deleted: 7-0

Deleted: Write

Deleted: DAC1 #2 Low Byte

Deleted: 7-0

Deleted: Write

Deleted: DAC1 #2 High Byte

Deleted: ¶

Deleted: 7

Vytek TRM-1 PRD 14

Status information for both PA #1 and PA #2 is read via a 3 byte (24-bit) status word called PAStatusWord24,

as described below. The amplifier sets the bit when the relevant condition occurs. The bit will stay set until

cleared by a write of a 0 to the corresponding bit in the status register –OR– when the alarming amplifier is

removed or taken offline, then manually brought back online (the failure count will also be cleared in this case).

PAStatusWord24: There is a 3 byte (24-bit) status word:

Byte #1: Generic Info

7, 6 5, 4, 3 2,1,0

Active PA PA #1 failures causing cutover PA #2 failures causing cutover

00 = none 000=0 000=0

01 = PA #1 001=1 001=1

10 = PA #2 010=2 010=2

11 = INVALID 011=3 011=3

100=4 100=4

NOTE: these bits 101=5 101=5

are READ ONLY 110=6 110=6

111=7+ 111=7+

Byte #2: PA#1 Status Byte

765 43210

Fan Warn High Reverse Low Pwr Overcurrent Thermal High Pwr NotInstalled

Byte #3: PA#2 Status Byte

76 543210

Fan Warn High Reverse Low Pwr Overcurrent Thermal High Pwr NotInstalled

** All alarm bits in PA #1 and PA #2 are latched, and remain set even if the condition has gone away with or without transmission

except the NotInstalled flag (bit 0)

Deleted: ¶

Vytek TRM-1 PRD 15

Power Supply Alarms

In addition to the power amplifier alarms, Status information for both PS #1 and PS #2 is read via a 2 byte (16-

bit) status word called PSStatusWord16, as described below. The amplifier sets the bit when the relevant

condition occurs. The bit will stay set until cleared by a write of a 0 to the corresponding bit in the status

“Push” Enabling for alarm conditions

The TRM-1 can be configured to send unsolicited alarm information (see command table below) on the

occurrence of a power amplifier or power supply alarm. The unsolicited alarm information is sent as

PAStatusWord24 or PSStatusWord16 through the serial port. It is sent once on the setting of any alarm bits in

Byte 2 or Byte 3 of PAStatusWord24, or if a Power Supply alarm occurs, Byte 1 or Byte 2 in PSStatusWord16.

The pushed alarm status word will be sent in ASCII format (as are all commands and responses). It will have

the following format. Note that numeric values are given in hex.

PAStatusWord24=488000

PSStatusWord16=0400

By default, alarm “push” is enabled.

PSStatusWord16: There is a 2 byte (8-bit) status word:

Byte #1: PS#1 Status Byte

7 65 4 3210

Fail Overcurrent Overvoltage ACSense SwitchOn Offline

0 = good 0 = on

Byte #2: PS#2 Status Byte 1 = bad 1 = off

7 6 5 4 3210

Fail Overcurrent Overvoltage ACSense SwitchOn Offline

Formatted

Deleted: ¶

Deleted: :

Deleted: disabled

Vytek TRM-1 PRD 16

Alarm Algorithms

Several alarm scenarios are described in the flow diagrams below.

Power On:

enable active P

Update LEDs on active

Update LEDs on

inactive PA

Send StatusWord24, if

PAn Status Byte != 0

ush enabled

PA #1 Alarms with Fan Failure

PA #1 Fan Failure

detected

Inc PA #1 fail count

Update PA #1 LED

PA #2 fail count < TBD

Switch to PA #2

Send StatusWord24

ush enabled

PA #1 Alarms with Fan Failure

& PA #2 Alarms with Thermal

PA #2 Thermal

detected

Inc PA #2 fail count

Update PA #2 LED

PA #1 fail count > TBD

Shutdown

Send StatusWord24

ush enabled

Vytek TRM-1 PRD 17

State Machine

yes

Read temperature

temp >

100?

Read Fan current

Fans OK?

Read Reflected Power

Ref Pwr >

rev_thresh?

Read DC Voltage

Read DC Current

newlline

entered?

Process CLI cmd

PAStatWord24:Set Thermal Alarm Flag

Change active PA #

Inc PA fail counter

Set LED red

TRM-1 CPU Controller: State Machine

PA Alarm Control

CLI

Temperature

Alarm

Fan Fail

Alarm

High Reverse

Alarm

High Pwr

Alarm

Excess

current?

PAStatWord24:Set Fan Fail Flag

Change active PA #

Inc PA fail counter

Set LED red

Low Pwr

Alarm

Overcurrent

Alarm

Power Leveling

RFdetect

== 0?

measured_fwd

>high thresh?

PAStatWord24:Set High Pwr Flag

Change active PA #

Inc PA fail counter

Set LED red

measured_fwd

< low thresh?

yes PAStatWord24:Set Low Pwr Flag Set LED red

PAStatWord24:Set High Reverse Flag

Change active PA #

Inc PA fail counter

yes

PAStatWord24:Set Overcurrent Flag

Change active PA #

Inc PA fail counter

PS Alarm Control

PSFail

high?

OCAlarm

high?

yes

OVAlarm

high?

PSStatWord16:Set Fail Flag

Set Offline Flag

Set LED red

PSStatWord16:Set Overcurrent Flag

Set Offline Flag

PSStatWord16:Set Overcurrent Flag

Set Offline Flag

Disable PS

RampUp

true?

yes

atten = (0.03125*(FwdTarg - FwdRead)) / 0.25 + atten_prev

atten_prev = attenRampUp = falseRampUp = true

Read forward pwr

Set LED red

ACSense

bad?

PSStatWord16:Set ACSense Flag

Set Offline Flag Disable PS Set LED red

PA & PS Offline Mgmt

Initialization

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

Manual PA/

PS Offline

Vytek TRM-1 PRD 18

PA Cutover

Manual PA/PS Offline

yes

PAx fail: Cutover to PAy

Deselect PAx,

select PAy

PSx disable

PSy enable

PAy fail

counter >=

MAXFAIL

Return to State

Machine

PSy switch

off?

CLI cmd

override?

yes

Manual PA/PS offline

mgmt

PS x currently

offline (switch or

SW)?

Clear PA x fail

counter

PA x currently

installed?

Clear PA x

alarms

Return to State

Machine

Vytek TRM-1 PRD 19

Serial Port Commands available to User

The table below lists all of the serial commands available to the user. All configuration parameters that are

modified using the serial commands are stored in non-volatile memory and will be applied through subsequent

power/reset cycles.

Table 6: Serial Port Commands available to User

CUrrent Amps 0 –- 40 0.01 Get the DC supply current

DOWNLOAD Start xmodem1k download

Failcount m1-255 5Get/Set the maximum PA fail

count

FWd mWatts 250 - 500 0.01 400 Get/Set forward power

FWd Thresh High m Watts 0 – 1024 0.01 500 Get/Set the high power alarm

high threshold

FWd Thresh Low m Watts 0 – 1024 0.01 200 Get/Set the high power alarm

low threshold

PA m 3 Gets/Sets active PA

m = 0 ==> both PAs disabled

m = 1 ==> PA #1 enabled

m = 2 ==> PA #2 enabled

m = 3 ==> firmware controlled

PA Status m 000000-ffffff Set/Get PAStatusWord24

PS m ON | OFF Set/Get Power Supply m online

status

PS Status m 0000-ffff Set/Get PSStatusWord16

PUsh YES | NO YES Set/Get alarm "push" status

RESet Performs a hardware reset of

the controller

REV Watts 0 – 1024 0.01 Display reverse power

REV Thresh m Watts 0 – 1024 0.01 100 Gets/Sets the reverse power

alarm threshold

SErial xxxx Get the serial number (max 16

chars)

TEmp PA x Deg C -50 – +100 0.01 Gets linear PA x temperature

TEmp Thresh High m Deg C -50 – +100 0.01 100 Gets/Sets the amplifier high

temperature alarm threshold

TEmp Thresh Low m Deg C -50 – +100 0.01 -30 Gets/Sets the amplifier low

temperature alarm threshold

VEr Get firmware version

VOltage Volts 0 – 63 0.01 Get DC supply voltage

Resolution Default

Value

MEANING/ACTION

CMD PARAMETERS Units of

Measure

Range

Formatted

Deleted: ¶

Status Word Definition¶

Deleted: T

Deleted: 8

Deleted: ¶

Vytek TRM-1 PRD 20

LEDs

PA #1 and PA #2 will each have LEDs indicating their status, as well as a single Tx LED indicating the

presence of RF output greater than 10 Watts.

GREEN ● RED ● OFF ●

Alarm LED OK Alarm Condition

active

PA off w/no

alarms

Tx RF Output No RF Output

Formatted: Bullets and Numbering

Formatted

Deleted: Alarm Behaviour¶

All Warn and Shutdown flags remain

Deleted: Serial Port Commands

available to User¶

CMD

Deleted: ¶

Deleted: Table 1¶

Alarm Behaviour¶

All Warn and Shutdown flags remain ¶

... [31]

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