AES 7088 UE Users Manual

AES

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IntelliNe

AES Corporation

285 Newbury Street

Peabody,MA 01960-1315 USA

Phone [phone]

Fax [phone]

[e-mail]

SERVICE MANUAL
MODEL 7088-UE

Rev 1.0 July 10,2007

TABLE OF CONTENS

1.SPECIFICATION

2.CONNECTIONS AND OPERATION

3.PERFORMANCE TEST AND ALIGNMENT

4.TEST EQUIPMENT CONFIGURATION

5.TRANSMITTER PERFORMANCE TEST

6.TROUBLESHOOTING

7.CIRCUIT DESCRIPTION

8.PROGAMMER INSTRUCTION

9.PARTS LIST

10.PRINT CIRCUIT BOARD LAYOUT

11.COMPONENT PLACEMENT

12.BLOCK DIAGRAM

1.SPECIFICATION

GENERAL SPECIFICATIONS

POWER SOURCE………………………………………………+13.8VD.C.nominal(+10.8 to +15.6V)
TEMPERATURE RANGE
STORAGE ………………………………………………80℃ maximum -40℃ min.

25℃ nominal

OPERATING……………………………………………60℃ maximum -20℃ min.
ANTENNA IMPEDANCE………………………………………50Ω
FREQUENCY CONTROL……………………………………………PLL SYNTHESISER
FREQUENCY OF OPERATION……………………………………400MHZ-480MHZ
FREQUENCY TOLERANCE AND STABILITY…………………±5PPM
HIGH HUMIDITY……………………………………………………90%
CHANNEL CAPABILITY……………………………………………1
NOMINAL DIMENSIONS …………………………………………134mm(L)X60mm(W)X20mm(H)
WEIGHT ……………………………………………………………190g

RADIO DATA TRANSCEIVER NOMINAL PERFORMANCE
PERFORMANCE SPECIFICATIONS……………………………ETSI 300-113
RF OUTPUT POWER………………………………………………5W PROGRAMMABLE
MODULATION TYPE………………………………………………FM
INTERMEDIATE FREQUENICES………………………………21.7MHZ

450KHZ

CHANNEL SPACING……………………………………………12.5KHZ,25KHZ
TRANSMIT ATTACK TIME………………………………………<25mS
CURRENT CONSUMPTION
TRANSMIT……………………………………………1800mA@5W,

RECEIVE………………………………………………85mA

2.CONNECTIONS AND OPERATION

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EXTERNAL CONNECTIIONS

1-50Ω BNC SOCKET
2-9 WAY "D" TYPE PLUG(D_SUB)

D-TYPE INTERCONNECTIONS

PIN

FUNCTION

TYPE

1

2

RANGE DESCRIPTION

D_SUB-1 ANALOGUE 100Mv-2.5VP-P
D_SUB-2 ANALOGUE
D_SUB-3
D_SUB-4
D_SUB-5
D_SUB-6
D_SUB-7
D_SUB-8
D_SUB-9

DATA_IN
DATA_OUT
PTT
GND 0V
B+
CDS
NC
PGM_DATA
PGM_ENB

GND
V+
OUTPUT
NC
INPUT
INPUT

1VP-P
0V/+5V

+13.8V
OPEN/SHORT
NC
0V/NC

EXTERNAL MODULATION INPU
RECEIVER AF OUTPUT
TRANSMIT ENABLEINPUT
GND
POWER SUPPLY
RF CARRIER DETECT
NC
PROGRAMMER DATA INPUT
PROGRAMMING ENABLE0V/5V

3.PERFORMANCE TEST AND ALIGNMENT

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The alignment and performance test procedures assume the use of the following equipmen

Discrete test equipment

Volt Meter Spectrum Analyser and notch filter(option)
RF Power Meter. Coupler(20dB isolation)
DC Power Supply,0-15V 2A min
Oscilloscope,20MHz dual beam
RF Frequency Counter,
100KHz-600MHz
AF Signal Generator 0-20KHz
RF Signal Generator
SINAD Meter
Modulation Meter
Audio Power Meter

Warning:
This device complies with the following of RF energy exposure standards and guidelines:
* United States Federal Communications Commission, Code of Federal Regulations;47CFR
part 2 sub-part J
* American National Standards Institute (ANSI)/Institute of Electrical and Electronic
Engineers (IEEE) C95. 1-1992
* Institute of Electrical and Electronic Engineers (IEEE) C95. 1-1999 Edition

Please keep 40cm distance away from the antenna.
Only antenna which gain lower than 1.0 can be conntected to the transmitter

4.TEST EQUIPMENT CONFIGURATION

RF Signal Generator

Watt Meter with
20dB Attenuator

20dB Attenuator

Audio Generator

Modulation Meter

SINAD Meter

VOLT Meter

DC Power Supply

RADIO

OSCILLOSCOPE

Spectrum Analyzer

Frequency Counter

Test Box

123.45678

Test Equipment Configuration

5.TRANSMITTER PERFORMANCE TESTS

Power Output

1. Set the power supply voltage to 13.8V dc.and monitor the voltage during transmit.

2. Switch data radio TX and check and record the output power.The nominal output.

power is adjustable between 1 and 5W depending on the programming.

3. Set the PTT switch to OFF.

Peak Deviation

1. Connect the oscilloscope to the output of the modulation meter.

2. Set the AF signal generator to 100Hz at 5V peak-to-peak and connect to DATA_IN Line
(pin 1 of D_SUB)

3. Switch data radio to TX and observe the oscilloscope display to check that the 100Hz
tone is a square wave.

4. Using the AF signal generator,sweep from 100Hz to 3KHz and record the peak deviation.

5. Check the peak deviation for appropriate channel spacing as follows:
For 12.5Khz channel spacing,Peak deviation is not greater than 2.5KHz.
For 25KHz channel spacing,Peak deviation is not greater than 5KHz.

Spectrum Test

It may be necessary to notch the fundamental signal during this test.

1. Connect a spectrum analyser and RF power meter to the antenna socket.

2. Switch data radio to TX.Observe the output spectrum on the spectrum analyser.

3. Adjust notch filter to minimise the carrier.All spurious and harmonics signals should
be below-36dBm up to 1GHz and below-30dBm between 1 and 4GHz.

4. Switch off the data radio transmit control.

Receiver Performance Tests

Sensitivity
The SINAD performance test may be used to test the sensitivity of the receiver.

1. Connect the RF signal generator to the data radio BNC antenna connector.

2. Set the RF signal generator to the receive frequency.

3. Connect the leads of the SINAD meter between 0V and pin 2 on D_SUB.

4. Set the deviation to 60% of the peak system deviation.

5. Set the AF generator to 1KHz.

6. Adjust the RF signal generator level until the SINAD Meter reads 12dB.

7. Check that the signal generator RF level is less than -119dBm.

6.TROUBLESHOOTING

The section includes voltage which should assist the engineer to isolate and repair the fault.

Voltage measurements should be made using a high-impedance voltmeter and the values given

are with respect to ground.

Careful alignment,using suitable test equipment,and quality interface cables should
ensure that the radio meet their specified performance.

Voltage Charts

Measurement Condition:455.5MHz,13.8V supply,RX Carrier Present.
Transistors.

RX TX

Ref. No.

BCEBC E
T101 0 0 0 0.44 2.5 0
T871 4.96 0 4.97 4.3 2.3 4.9
T323 4.5 4.7 3.8 4.5 4.7 3.8

Integrated Circuits

Pin U621 U401 U240
1 1.35v 4.7v 4.5v

RECEIVER