Larcan FM-250, Technical Manual

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FM-250 FM BROADCASTING EXCITER
Issue Date: 21 Jan 2003
n) RS485 OPTION
This 9 pin D type (female) connector is used for remote monitoring of meter functions.
o) TELEMETRY CONNECTIONS (PL7)
FUNCTION PL7 CONNECTOR PINS CONTACT STATUS
RF FAULT Pins 1 and 2 Voltage free contacts s/c
for fault
VSWR FAULT Pins 3 and 4 Voltage free contacts
s/c for fault
TEMPERATURE FAULT Pins 5 and 6 Voltage free contacts
s/c for fault
PSU FAULT Pins 7 and 8 Voltage free contacts
s/c for fault
STEREO OPERATION Pins 9 and 10 Voltage free contacts
s/c for stereo
PLL LOCK Pins 11 and 12 Voltage free contacts
s/c for Lock
ENABLE COMMAND Pins 13 o/c to enable
ground to disable
MONO/STEREO
COMMAND
Pins 14 o/c for Stereo
ground for Mono
+12V / 20mA SOURCE Pins 15 Supply for Test jig Leds
GROUND Pins 17 and 18 Connected to chassis
NOTE: Alternative contact positions are available internally, (via Link selections on the
Control module), for the Telemetry outputs.