Service manual

4.6 TP0332/2
Test Equipment
The following is a list of test equipment recommended for carrying out functional tests, setting-up
and fault location. Alternative types may be used provided that they are known to have at least equivalent
parameters and that corrections are made for any differences in parameters.
Test Set Parameters Suitable Type
Power Supply Output voltage 5,5V to 9V Coutant LB500
Output current 3A minimum Thurlby PL154
Current limiting Adjustable to approximately
0,5A and 3A or greater
Voltage sensing Connected to the sense
terminals of the TIU.
* Modulation Meter - Marconi 2305
Racal 9008A
* RF Power Meter - Marconi 6960
Racal 9102
Bird equivalent
* RF Signal Generator ±5kHz deviation Marconi 2019/2022
Farnell SG 1000
Ammeter Accuracy ±2% AVO Model 8
Range 100mA fsd; 3A fsd
* Frequency Counter Accuracy 0,1ppm or better Racal 9917
Readout accuracy 10Hz
Frequency 470MHz or greater
Input impedance 50Ω
* AF Generator Frequency accuracy ±5% Levell TG152
Level accuracy ±2%
Waveform Sine
Output amplitude 5V pk to pk max into 600 ohms
* Distortion Analyser/ - - HP333A
Millivolt Meter Lyons Instruments D10B
Oscilloscope - - Philips PM2308
* These items can be replaced by a radio test set combining all their functions,
for eg, Marconi MI2955
Wavetek 4032
or equivalent.