Troubleshooting - Acom 1000 User Manual

6.5. Troubleshooting

Please, see Section
5.3 Reading Auto-protection Signatures
signatures. You can decode them using the information below.
The signatures are structured in two lines, three groups by six symbols for every one event of auto-
protection. The last event is numbered as 1A-1B pair of lines, and the oldest one is 7A-7B.
The meaning of the first group is as follows:
a) nA - the number of the trip;
b) Next three symbols mean the following:
PN0 Tests made during Power-On procedure, before HV is ON;
PN2 Tests made during Power-On procedure, after HV is ON and one second after step-
start relay is closed;
SB0 Tests made in Stand-By, during the warm-up period or while entering Stand By (from
Operate);
SB2 Tests made during Stand-By, after the warm-up period;
PR0 Tests made while entering Operate;
PR2 Tests made during Operate;
TR0 Antenna relay tests made while changing from Tx to Rx (during Operate);
TR2 Antenna relay tests made while changing from Rx to Tx (during Operate);
TR4 Antenna relay tests made during Tx (Operate mode);
TR6 Antenna relay tests made during Rx (Operate mode).
c) The last symbol of the first group designates the kind of the input parameter, which caused
the protection circuit to trip. The abbreviations in brackets below are the signal
names/designations according to the CONTROL PCB electrical schematic diagram and signal
type:
1 Peak forward power (pfwd, analogue)
2 Reflected power (rfl, analogue)
3 Input (drive) power (inp, analogue)
4 Peak anode alternate voltage (paav, analogue)
5 Screen grid current (g2c, analogue)
6 Plate current (ipm, analogue)
7 High voltage (hvm, analogue)
8 Exhaust air temperature (temp, analogue)
9 Drive power exists (*GRIDRF, logic)
Page 30 of 36 | S e c t i o n MAINTENANCE
User's Manual | ACOM 1000 | HF + 6m Linear Amplifier
for the method of reading the auto-protection
August 2020