Trimble ELIZABETH35 User Manual

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Page 1

TRM-1

Deleted:

Low-band RF Power Amplifier

Formatted

Product Requirements Document

Revised August 20, 2003

Deleted: Version 1A¶

Deleted: A

Deleted: May 3, 2003

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ril 147, 200331057

1, 2003nely31

Vytek TRM-1 PRD

Vytek Wireless

Wireless Products Division

2310 Cousteau Court

Vista, CA 92083, USA

(760) 536-1000

www.vytek.com

Deleted: T

Page 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

Vytek TRM-1 PRD

Deleted: Technical Brief Scope

3¶ Functionality Design Philosophy Robustness Implementation and Construction Operation Specifications Hardware Block Diagram Interface Definitions Power Supply Connector Power Amplifier Module Connector Filter / Coupler Module Connector Rear Panel DC Power Connector Rear Panel RS232 Connector Controller Connections FPGA Register Definitions Software Description Alarms Types & Behavior Power Amplifier Alarms Power Supply Alarms “Push” Enabling for alarm conditions Alarm Algorithms 16¶ State Machine PA Cutover Manual PA/PS Offline

Deleted: Technical Brief Scope

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Formatted

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Formatted

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Formatted

Deleted: Table 1: Specifications

Table 2: Power Supply Connector 7¶

Formatted

Deleted: Table 1: Specifications 5¶

Table 2: Power Supply Connector 7¶

Formatted

Deleted: Table 1: Specifications ¶

Table 2: Power Supply Connector ¶

Formatted

Deleted: Table 1: Specifications ¶

Table 2: Power Supply Logic

Formatted

3¶

4¶

17¶

18¶

3¶

6¶

7¶

8¶

9¶

10¶

12¶

13¶

15¶

18¶

... [1]

3¶

... [2]

3¶

... [3]

... [4]

3¶

... [5]

... [6]

3¶

... [7]

... [8]

... [9]

... [10]

... [11]

5¶

... [12]

... [13]

... [14]

... [15]

... [16]

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... [18]

... [19]

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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

Deleted: ¶

John Sonnenberg¶ Vytek Wireless¶ Vista, CA ¶ ¶

Deleted: Final PA

Deleted: circuit

Deleted: ,

Deleted: y circuit, the cooling fan, and

the driver circuit

Deleted:

Formatted: Bullets and Numbering

Page Break

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.

Vytek TRM-1 PRD

Formatted: Bullets and Numbering

Page 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

Size 19” open telecom rack mount

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

Time To Repair 10 minutes max to replace LRU to fix

EMC, Line Faults and Lightening Protection

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

TBD height

25,000 hours f or soft failures 80,000 hours f or hard failures

soft failure UL Approved A C power supp ly Lightening protection on RF output

19” rack mount, 6 U tall, 17” deep.

50,000 soft fail 100,000 hrs hard-fail 2 minutes to replace LRUs

UL Approved AC power supply Lightening protection on RF output 15kV ESD on all other I/Os

Power Amp

Power Line Input 110 VAC; 60 Hz

AC Power Switch and Breaker Frequency Range 35.15 to 35.75 MHz 32-38 MHz No tuning Input Signal +5 dBm (+/-3 dB)

Input Connector Panel-mount N-Type female TNC female Output Power 400 W (+/- 1 dB) Programmable 250-500 watts +/- 1dB

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

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

Type Approva ls None None Trimble will take respo nsibility for this Output Impedance 50 ohms 50 ohms Output Match Operate into 2:1 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-

< 10 Amps

On front or rear panel Rear Panel Bump-proof

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

with 10 dB margin for +/- 50 kHz

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

No damage into infinite VSWR

90-130VAC, <10A at 110Vac

+5 dBm (+/-3 dB) 50 ohms single carrier constant envelope phase modulation < 40 kHz bandwidth nominally 2 Hz pulse with 99% duty <-30dBm in OF F mode, Rise/Fall time < 5 mS and >100uS

0-50C; +/-1.5dB –30 to +60 C Per FCC 22.359 (b)(1)

with 10 dB margin for +/- 50 kHz

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

Operate into a 3:1. No damage into infinite VSWR.

Controller

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

Vytek TRM-1 PRD

shipped via Fedex

Soft failures don’t degrade performance.

Room temperature calculations.

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? No

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.”

up circuitry.

Deleted: Expected Operating

Performance

Formatted

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Deleted: 6

Deleted: Multiple chassis may be

appropriate

Deleted:

Deleted: o

Deleted: N

Deleted: <500mS

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Deleted: mS

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< TBD Amps power to power amp. Battery MUST be

Control Interfaces Serial port for local console

Measurements Volta ges, currents, forward and

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

Console Protocol VT100 over serial port

Network Protocols none none Connectors DB9 female for console

Firmware update Via serial port Via serial port Soft-fail modes Fan monitoring

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

Internal Measurement Accuracy

RF leveling time constant for change s in drive lev el.

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

reflected RF power, temperature, fan health, alarms, PA stage in use.

XModem or Ymodem for software upgrading

PA stage Driver Stage AC-DC converter

Power +/- 0.5dB

<10 seconds.

Serial port for local console,

38400 bps, N,8,1.

Voltages, currents, forward and reflected RF power, temperature, fan health, alarms, PA stage in use.

status. VT100 over ser ial port XModem or XModem/1k upgrading

DB9 Female

Fan monitoring PA stage Driver Stage AC-DC converter

serial command. RTS reset ability may be defeated by removal o internal jumper.

Voltage

+/- 2% Current +/- 5% Temperature +/- 3 degrees

for software

present in order to ensure operation of controller when amplifier power is off.

As appropriate on all fans, power supplies, power amp stages

Failure of any one of these components will not cause the amplifier to cease operation.

Unit is operational when RTS is asserted and held in reset when not asserted.

Power valid for VSWR < 1.15:1

or “off” state when changing the antenna switch setting.

Table 1: Specifications

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: ¶

Formatted

Vytek TRM-1 PRD

Page 6

Hardware Block Diagram

Deleted: Page Break

TRM-1 Power Amplifier

VyTek Wireless

Battery

10 to 18 volts

Input

Power Supply

Module

110 VAC Input

Power Supply

Module

Input Pow er

Limiting Amplifier

Supply Power

LPF

Control

48 volts

Control

Driver

Voltage

Regulators

and

Switches

Controller Module

Analog Controls and Status

Temp

Sensor

Power

Amplifier

Power Amplifier Module

15 volts

5 volts

Fans

Atmel

ATmega128

Processor

A/D Inputs

LEDs

Alarm

FPGA Atmel

EP1K30

DAC Outputs

External I/O Connector

RF Input

Vytek TRM-1 PRD

Input Pow er

Limiting Amplifier

Supply Power

LPF

Driver

Analog Controls and Status

Temp

Sensor

Power

Amplifier

Power Amplifier Module

Fwd Pwr Rev Pwr

LPF

RF Output Module

RF Output

Page 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

Formatted

Deleted: Logic

Deleted: Controller: Power Supply

Logic Connector

Vytek TRM-1 PRD

Page 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

Vytek TRM-1 PRD

Deleted: Table : Controller: Rear Panel I/O Connector

Formatted

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: <#>¶

Formatted

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

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Formatted

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Deleted: : Controller

... [20]

... [21]

... [22]

... [23]

... [24]

... [25]

... [26]

... [27]

... [28]

... [29]

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Page 9

Rear Panel DC Power Connector

Pin Name Function

1 Monitor Controller Power Monitor (Don’t apply an

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

8 CTS No Connection 9 RI No Connection

external voltage to this pin, but it may be used to monitor the actual controller voltage if desired.)

resets the unit, Jumper Selectable

Table 4: Rear Panel RS232 Connector

Deleted: 6

Vytek TRM-1 PRD

Page 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

Fan #1 current sensor analog signal

to CPU ADC6

J2-2 Fan2 Input FANB MUX to

Fan #2 current sensor analog signal

CPU ADC6

J2-3 Input FANC MUX to

Unused current sensor analog signal

CPU ADC6

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)

J15-8 RF_det_thresh

Input FPGA Pin 59 0 = Amplifier 1 Installed

(Must be pulled up by FPGA.)

Output DAC U12-D PA RF Detector threshold voltage

(drvr_stg_bias)

Vytek TRM-1 PRD

Deleted: Select Digital

Deleted: 0

Deleted: off

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Deleted: on

Deleted: CPU PB5 to

Deleted: FPGA Pin 135

Deleted: Hi-Z

Deleted: Low

Page 11

J15-9

TP15

J15-10 Amp 2 Inst

(intspi_clk)

J15-11 Fwd Power

(fwd_pwr)

J15-12 Fwd Offset

(fwd_offset)

J15-13 PS1 AC

(intspi_reset)

J15-14 PS2 AC

(intspi_miso) J15-15 NC J15-16 NC

Pin Name I/O Logical

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)

J16-7 PS2 Disable

(peak_alarm)

J16-8 Temp 1

(pd_temp)

J16-9 +15v Output Voltage Regulator +15 volts J16-10 (phase_adjust) Output DAC U12-B J16-11 Bias

(attenuation) 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

J17-1 Ground J17-2 PS1 Fail

(extspi_a5)

J17-3 PS1 Switch

(extspi_a4)

J17-4 PS2 Fail

(extspi_a3)

J17-5 PS2 Switch

(extspi_a2)

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

Vytek TRM-1 PRD

Input FPGA Pin 67 0 = Amplifier 2 Installed

(Must be pulled up by FPGA.)

Input CPU ADC0 Forward Power Detector Analog Signal

Output DAC U11-A Bias Voltage for Forward Power Detector

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

60 VAC.

Input Inverter ->

FPGA Pin 68

Connection

Output CPU PB4 0 = Enable Power Supply #1

Output CPU PB1 0 = Enable Power Supply #2

Input CPU ADC3 Temperature Sensor Signal from Amp

Output DAC U12-A Bias Voltage for Power Amplifiers

Connection

Input Inverter ->

FPGA Pin 43

Input Inverter ->

FPGA Pin 41

Input Inverter ->

FPGA Pin 39

Input Inverter ->

FPGA Pin 38

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

Function

1 = Power Supply #1 Off

1 = Power Supply #2 Off

Function

0 = Power Supply Failure 1 = Power Supply is OK Front Panel Power Switch Status: (0 = On, 1 = Off) 0 = Power Supply Failure 1 = Power Supply is OK Front Panel Power Switch Status: (0 = On, 1 = Off)

Page 12

(extspi_a1)

J17-7 RF Detect 2

(extspi_a0)

J17-8 PS1 OV

(extspi_clk)

J17-9 PS1 OC

(extspi_mosi)

J17-10 (extspi_miso) Output Inverter ->

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

Input Inverter ->

FPGA Pin 36

Input Inverter ->

RF Detected at Power Amplifier 2 (0 = No, 1 = Yes) Over Voltage Alarm

FPGA Pin 46

Input Inverter ->

Over Current Alarm

FPGA Pin 48

FPGA Pin 47

J17-11 PS2 OV

(extspi_backplid0)

J17-12 PS2 OC

(extspi_backplid1)

Input Inverter ->

FPGA Pin 83

Input Inverter ->

FPGA Pin 86

Over Voltage Alarm

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

Vytek TRM-1 PRD

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Deleted: 1

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Deleted: 1

Deleted: 0

Deleted: 1

Page 13

(1 = OK, 0 = Alarm)

0 1 0 1 7 Read PS2 Status:

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

(0 = Failure, 1 = OK)

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

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: ¶

Status Byte

Alarm Type

Fan Failure

High Reverse

Low Pw

Overcurrent

Thermal

High Pw

bit

PA #1 Alarm Occurrence PA #2 Alarm Occurrence

7 Cut to PA #2 Cut to PA #1

5 Cut to PA #2

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

2 Cut to PA #2 Cut to PA #1

1 Cut to PA #2 Cut to PA #1

Shutdown Shutdown

Stay at PA #2

cut back and forth to PA #1

(to find non-cut condition)

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

Table 5: Power Amplifier Alarms

Vytek TRM-1 PRD

Formatted

Deleted: 7

Page 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+

Deleted: ¶

Byte #2: PA#1 Status Byte

Byte #3: PA#2 Status Byte

** 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)

765 43210

Fan Warn High Reverse

76 543210

Fan Warn High Reverse

Low Pwr

Overcurrent Thermal High Pwr NotInstalled

Vytek TRM-1 PRD

Page 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 (16bit) 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 register.

PSStatusWord16: There is a 2 byte (8-bit) status word: Byte #1: PS#1 Status Byte

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

7 65 4 3210

Fail Overcurrent

7 6 5 4 3210

Fail Overcurrent

Overvoltage

ACSense SwitchOn Offline

0 = good 0 = on

ACSense SwitchOn Offline

“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.

Deleted: ¶

Deleted: :

Deleted: disabled

Formatted

Vytek TRM-1 PRD

Page 16

Alarm Algorithms

Several alarm scenarios are described in the flow diagrams below.

Power On:

enable active P

Update LEDs on inactive PA

ush enabled

Update LEDs on active PA

Send StatusWord24, if PAn Status Byte != 0

PA #1 Alarms with Fan Failure

PA #1 Fan Failure detected

Update PA #1 LED

Switch to PA #2

ush enabled

Inc PA #1 fail count

PA #2 fail count < TBD

Send StatusWord24

PA #1 Alarms with Fan Failure & PA #2 Alarms with Thermal

PA #2 Thermal detected

Vytek TRM-1 PRD

Update PA #2 LED

Shutdown

ush enabled

Inc PA #2 fail count

PA #1 fail count > TBD

Send StatusWord24

Page 17

State Machine

Temperature

Alarm

Fan Fail

Alarm

High Pwr

Alarm

Low Pwr

Alarm

High Reverse

Alarm

Overcurrent

Alarm

Initialization

RFdetect

== 0?

yes

Read temperature

yes

temp >

100?

Read Fan current

Fans OK?

yes

measured_fwd

>high thresh?

measured_fwd

< low thresh?

Read Reflected Power

yes

Ref Pwr >

rev_thresh?

Read DC Voltage

Read DC Current

yes

Excess

current?

TRM-1 CPU Controller: State Machine

RampUp

true?

yes

PAStatWord24: Set Thermal Alarm Flag Change active PA # Inc P A fail counter

PAStatWord24:Set Fan Fail Flag Change active PA # Inc P A fail counter

PAStatWord24: Set High Pwr Flag

yes

Change active PA # Inc P A fail counter

yes

PAStatWord24: Set Low Pwr Flag

PAStatWord24:S et High Reverse Flag Change active PA # Inc P A fail counter

PAStatWord 24:Set Overcurrent Flag Change active PA # Inc P A fail counter

Read forward pwr

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

atten_prev = attenRampUp = falseRampUp = true

Set LED red

Power Leveling

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

PA Alarm Control

Vytek TRM-1 PRD

PSFail

high?

OCAlarm

high?

OVAlarm

high?

ACSense

bad?

Manual PA/

PS Offline

newlline

entered?

yes

Process CLI cmd

yes

PSStatWord16:Set Fail Flag Set Offline Flag

yes

PSStatWord16:Set Overcurrent Flag Set Offline Flag

yes

PSStatWord16:Set Overcurrent Flag Set O ffline Flag

yes

PSStatWord16:Set ACSense Flag Set O ffline Flag

Disable PS

Disable PS Set LED red

Set LED red

Amp

Cutover

Amp

Cutover

Amp

Cutover

Amp

Cutover

PS Alarm Control

PA & PS Offline Mgmt

CLI

Page 18

PA Cutover

PAx fail: Cutover to PAy

PSx disable

Manual PA/PS Offline

PAy fail

counter >=

MAXFAIL

PSy switch

CLI cmd

override?

PSy enable

Deselect PAx,

select PAy

Return to State

Machine

Manual PA/PS offline

yes

off?

yes

mgmt

Vytek TRM-1 PRD

PS x currently

offline (switch or

SW)?

yes

Clear PA x

alarms

Clear PA x fail

counter

Return to State

Machine

PA x currently

installed?

yes

Page 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.

CMD PARAMETERS Units of

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

DOWNLOAD Start xmodem1k download

Failcount

FWd

FWd Thresh High m Watts 0 – 1024 0.01

FWd Thresh Low m Watts 0 – 1024 0.01

PA m 3 Gets/Sets active PA

PA Status m 000000-ffffff Set/Get PAStatusWord24

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

PS Status m 0000-ffff Set/Get PSStatusWord16

PUsh YES | NO

RESet Performs a hardware reset of

REV Watts 0 – 1024 0.01 Display reverse power

REV Thresh m Watts 0 – 1024 0.01

SErial xxxx Get the serial number (max 16

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

TEmp Thresh High m Deg C -50 – +100 0.01

TEmp Thresh Low m Deg C -50 – +100 0.01

VEr Get firmware version

VOltage Volts 0 – 63 0.01 Get DC supply voltage

Vytek TRM-1 PRD

Range

Resolution Default

Measure

Watts 250 - 500 0.01

1-255

Table 6: Serial Port Commands available to User

Value

MEANING/ACTION

Get/Set the maximum PA fail count

400

Get/Set forward power

500

Get/Set the high power alarm high threshold

200

Get/Set the high power alarm low threshold

m = 0 ==> both PAs disabled m = 1 ==> PA #1 enabled m = 2 ==> PA #2 enabled m = 3 ==> firmware controlled

status

YES

Set/Get alarm "push" status

the controller

100

Gets/Sets the reverse power alarm threshold

chars)

100

Gets/Sets the amplifier high temperature alarm threshold

-30

Gets/Sets the amplifier low temperature alarm threshold

Deleted: ¶ ¶ Status Word Definition¶ ¶

Formatted

Deleted: T

Formatted

Deleted: 8

Formatted

Deleted: ¶

Page 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.

Alarm LED

GREEN ● RED ● OFF ●

OK Alarm Condition

active

RF Output No RF Output

PA off w/no alarms

Deleted: Alarm Behaviour¶

All Warn and Shutdown flags remain

Deleted: Serial Port Commands available to User¶

CMD

Formatted: Bullets and Numbering

Deleted: ¶

... [31]

Deleted: Table 1

Alarm Behaviour¶

All Warn and Shutdown flags remain ¶

Formatted

Vytek TRM-1 PRD

Page 21

Page 2: [1] Deleted Lori Welte 7/2/2003 11:20:00 AM