User's Guide

115 On error the MEM key can be used to view each problem in turn, so that each POST problem can be
noted. For example, if the internal Have Quick module (anti-jam) option is enabled and the Have Quick
module has failed, the MEM key should be pressed a number of times and the following display will be
shown:
116 Pressing the MEM key a number of times will cause each POST problem in turn to be shown,
returning to the original display when all POST codes have been shown. The post-initialisation test can
only be cleared by switching the set off, fixing the problem concerned and switching the set back on
again. Analysing faults is outside the scope of this handbook. Reference should be made to the
appropriate technical handbook for further information.
CONTINUOUSLY MONITORED FUNCTIONS
117 The BIT automatically performs test routines that monitor the equipment’s test point voltages at
least once every two seconds. If a test point voltage is found to be outside the pre-set limit, the module
and test point numbers are stored in the fault memory. The error message ‘bit’ will be shown on the
monitor display. If the fault is only temporary, the bit error message will disappear.
118 If the fault is caused by an external influence and the set is still operating correctly at reduced power,
one of the following messages will be displayed:
❏ If a high temperature within the equipment is sensed, the error message °C will be shown on
the monitor display.
❏
If the fault is caused by a high VSWR at the VHF antenna connection, ANT 1 will be shown on
the monitor display.
❏
If the fault is caused by a high VSWR at the UHF antenna connection, ANT 2 will be shown on
the monitor display.
❏
If the fault is caused by a low supply voltage AC or DC (as selected), PS will be shown in the
monitor display.
❏
If the fault is with an external power amplifier, 3640, Ebit will be shown in the monitor display.
Under this condition the set will be operating correctly at full power, however the 3640 will be in
bypass condition (non-amplifying). When the 3640 fault is cleared, the following key sequence
must be entered at the radio to clear the bypass condition and restore normal working:
SHIFTs, RESET
3000DV2 Radios Section 4
Page 31
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FREQUENCY CHANNEL MONITOR