Functional Testing - Plantronics 1632 Manual

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5.3.2.1
LOCAL/REMOTE CIRCUIT. The Local/Remote circuit should
bear close scrut1ny dur 1ng troubleshooting, as its function
affects almost every control circuit in the VFCTD.
While the Local/Remote circuit consists of straightforward
logic, the symptoms produced by a failure of one enable/disable
function could prove baffling if the extensiveness of the
circuit were not kept in mind.
5.4 FUNCTIONAL TESTING
The following tables contain functional test procedures which
should be followed when troubleshooting the VFCTD.
Table
5-2.
Input Circuits Functional Test
ACTION
Connect FSK signal
source to INPUT
1
Adjust source output
level to
+10
dBm
Adjust source output
to 0 dBm
Adjust source output
to -20 dBm
Check for signal present
at monitor one (two) on
rear panel
Check for signal present
at TPl (2) on input board
Repeat test procedure
for INPUT 2
5-4
EFFECT
HI LED should illuminate
NOR LED should illuminate
(tolerance +3 dBm)
LOW LED should illuminate
(tolerance +3 dBm)
Approximately 2 Vrms
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