19
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 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)
A - antenna power exists (*PANT, logic)
B - output relay closed (ORC, logic)
C - arc fault (ARCF, logic)
D - control grid current too high (G1C, logic)
E - +24VDC power supply error (PSE, logic)
F - low airflow (LAIR, logic)
For instance, 1ATR4B in the first group would mean that the last auto-protection (1A) tripped by the
antenna relay tests made during Tx - Operate mode (TR4), and the output relay closed - ORC signal
was failing (B).
The next five groups of symbols carry information about the analogue and logic values as measured by
the micro-controller (at the moment of auto-protection trip).
* Additional information is available from ACOM or from your dealer on how to interpret these values.
Using an EXCEL APPLICATION (available from ACOM or your dealer free of charge) and a PC, you
can decode these signatures easily by yourself.
In case it is necessary to ship the amplifier please see S.7-3.
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