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12 C656M-E (4/07)
c. Remove the shorting plug from the 16-pin connector located on the back box circuit board
(refer to Figure 8).
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 6-32 screw 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 Figure 9 and Figure 10 on page 13
for switch locations):
a. Set the SW1 switches on the dome drive to assign the address (refer to Table A on page 24 of
the Appendix for switch settings).
16-PIN CONNECTOR
STANDOFF
REMOVE SHORTING
PLUG
6-32 SCREW AND
LOCK WASHER