14 C613M-A (5/05)
CONNECTING A PTZ DEVICE, RELAY, AND ALARMS
The SP04-140 incorporates a 16-pin terminal block to support the following:
• PTZ device, such as a dome camera, using the Pelco D protocol (RS-422)
• Relay control, either normally open or normally closed
• Up to three alarm inputs, supervised or unsupervised, using any combination of high and low signals
The terminal block has tension clamps instead of screw terminals. Use a small screwdriver to open the clamp for a particular lead. Figure 11
shows how to wire the terminal block and connect it to the SP04-140.
NOTE:
The terminal block is keyed. It attaches only one way to the video encoder.
Figure 11.
SP04-140 Terminal Block
Table B identifies the pin assignments for the terminal block. An arrow on the rear panel identifies pin 1; on the terminal block, pin 1 is the
leftmost lead on the top row (refer to Figure 11).
Table B.
PTZ, Relay, and Alarm Pin Assignments
Top Row Bottom Row
Pin Label Lead Pin Label Lead
1 TX- RS-422 Data TX- 9 TX+ RS-422 Data TX+
2 RX- RS-422 Data RX- 10 RX+ RS-422 Data RX+
3 Ground 11 NC Relay Normally Closed
4CRelay Common 12 NO Relay Normally Open
5 Ground 13 Ground
6A
1
Alarm 1 14 Ground
7A
2
Alarm 2 15 Ground
8A
3
Alarm 3 16 Ground
PIN 1 PIN 1
PIN 9
PIN 16
