Specifications

32 Revision 4 – 1-7-2008 FTB 312-4
master/slave interconnect terminals at
TB1-4 and TB1-5.
1. Temporarily disconnect the black
master/slave interconnect wire at TB1-
4.
2. Temporarily set the manual intensity
override switch S2 to DAY.
3. Verify the Daytime responses are the
same as those in Table 3-2 and Section
1. Check Normal Daytime Operation
on Page 3-7.
4. Verify that the strobe is operating at
daytime intensity (high intensity).
5. Check the synchronization signal at the
black TB1-4 master/slave interconnect
terminal with a voltmeter as in Sync
Signal Evaluation. Use the intensity
control switch to step the unit from one
intensity to the other, or cover and
uncover the photocell. If the
synchronization signal is absent,
replace PCB1. A signal response could
indicate a slave unit problem or RFI
(see Slave Unit, and RFI Problems).
6. Reconnect the black master/slave
interconnect wire.
7. Place the manual intensity override
switch in the AUTO position.
Slave Unit
A slave unit receives intensity information
from a master unit over the master/slave
interconnect wires at TB1.
1. Temporarily disconnect the black
master/slave interconnect wire at TB1-
4. The unit will go into day operation.
2. Verify the Daytime responses are the
same as those in Table 3-2 and Section
1. Check Normal Daytime Operation
on Page 3-7.
3. Check the synchronization signal at the
black master/slave interconnect
terminal with a voltmeter. The sync
pulse must be present as described in
Sync Signal Evaluation. Check wiring
if sync is not present.
4. Select NIGHT at the manual intensity
override switch. The unit will go into
night mode with the strobe flashing at
night intensity (low intensity). Note
that if a red system is used, the white
strobe does not flash at night.
5. Check the signal on the master/slave
interconnect wire at TB1-4 with a
voltmeter, as described in Sync Signal
Evaluation. An absent pulse requires
checking the system for RFI (see RFI
Problems) and for another
malfunctioning unit connected to the
master/slave interconnect wire.
6. Reconnect the master/slave
interconnect wire to TB1-4.
7. Place the manual intensity override
switch in the AUTO position.