12 C656M-E (4/07)
c. Remove the shorting plug from the 16-pin connector located on the back box circuit board
(refer to Figure8).
Figure 8. Spectra III/Spectra IV Back Box Circuit Board
NOTES:
Discard the 4-40 screw and its lock washer; they are not used in the Spectra III/Spectra IV
system.
Save the 16-pin shorting plug. Otherwise, the Spectra III/Spectra IV cannot be converted back
to a Pelco-controlled system.
d. Insert the TXB-V board into the 16-pin connector located on the back box circuit board. Secure
the translator board to the standoff on the circuit board using the supplied 6-32screw and
lock washer.
e. Close the interconnect door. Snap the tab lock into place.
7. Set the DIP switches on the Spectra III/Spectra IV system (refer to Figure9 and Figure 10 on page 13
for switch locations):
a. Set the SW1 switches on the dome drive to assign the address (refer to TableA on page 24 of
the Appendix for switch settings).
16-PIN CONNECTOR
STANDOFF
REMOVE SHORTING
PLUG
6-32 SCREW AND
LOCK WASHER