Simrad SRT - Jumpers on SRT Control

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Diagnostics | SRT LAN radar sensor S-band down-mast Service Manual
SRT Control test points
Test points list Description Test points list Description
TP1 HVON High voltage ON TP16 LINE Input voltage sense
TP2 +5 V TP17 TXCOMB Tx data signal in
combined mode
TP3 PWON
OUT
Test signal
configurable
TP18 GND Ground
TP5 +24 V Power supply from
SRT PWR-DC PCB
TP19 VDIN Video input from RF
detector PCB
TP6 VCO IF tunable oscillator
voltage
TP20 VDOUT Combined video
output
TP7 -15 V Power supply from
SRT PWR-DC PCB
TP21 RX Serial data reception
TP8 +15 V Power supply from
SRT PWR-DC PCB
TP22 TX Serial data
trasmission
TP9 PWON
OUT
24 V needed to
switch on the
system
TP23 AZ OUT Antenna azimuth
output
TP10 VFIL Magnetron heater
voltage
TP24 HL OUT Antenna heading
line output
TP11 -5 V Power Supply from
SRT PWR-DC PCB
TP25 TRPUSH Modulator trigger
push control
TP12 PRESTC Short range fixed
attenuation
TP26 TRPULL Modulator trigger
pull control
TP13 ANTS Antenna start
output
TP27 Motor
current
Motor current sense
TP14 TROUT Trigger output TP28 GND Ground
TP15 RXCOMB Rx data signal in
combined mode
TP29 GND Ground
Jumpers on SRT Control
Jumper Open Close
J7 Serial mode transmission Video combined mode transmission
J8* Warm-up 3 minutes before transmission No warm-up time
J10 Unable to load the boot processor Able to load the boot processor. The
link must be left open
J21 One noise diode is used Two noise diodes are used
* This jumper must always be open to allow the 3 minute warm-up. This time allows the
magnetron to come up to temperature. The transaction’s closing Jumper J8 can be performed
only by a technician.
! Warning: Remember after every operation performed on the jumper 8 to
open it to allow for warmup.