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76 C2907M-D (4/05)
CONNECTION SCENARIO 2 – USING A KBD4000 FOR MULTIPLEXER CONTROL
Refer to Figure 52 and the instructions that follow.
NOTE: If you set all your cameras to Standard Coaxitron for better control on the browser, you will lose most of the KBD4000 keyboard control
functions. If you set your cameras to Extended Coaxitron, you will have all the keyboard functions but the PTZ functions on the NET350 will be
very slow.
Figure 52. KBD4000 Connected to a Multiplexer
1. Connect a DB9 cable to the COM1 port on the back of the NET350 receiver. (In the Interface Mode field on the configuration page for the COM1
interface settings, select 232.) The data format should be 9600 baud, 8 data bits, odd parity, and 1 stop bit.
2. On the receiver side, connect TX- on the DB9 cable to terminal 7 on the wall block. Connect TX+ on the DB9 cable to terminal 8 on the wall
block. Connect RX- on the DB9 cable to terminal 2 on the wall block. Connect RX+ on the DB9 cable to terminal 1 on the wall block.
3. Connect a 12 VAC power supply to terminals 3 and 4 on the wall block.
4. Connect the wall block to the KBD4000 with an RJ-45 straight cable. (Note that DIP switches 4 and 8 on the KBD4000 must be set ON.)
5. Connect the monitor.
6. Refer to Figure 50 and Figure 52. Splice the supplied DB9 cable into the multiplexer wall block. Connect TX- from the NET350 transmitter to
terminal 2 on the wall block, TX+ to terminal 1, RX- to terminal 7, and RX+ to terminal 8.
7. Plug the DB9 cable into the COM1 port on the transmitter. (In the Interface Mode field, select RS-422/485.) The data format must be 9600,
8, odd, 1.
8. Connect the wall block to COM IN on the multiplexer with an RJ-45 straight cable.
9. Connect MAIN video output from the multiplexer to the transmitter.
1
2
3
4
8
7
6
5
TRANSMITTER
VideoIn
75
AudioI/O
COM2:
RS232
COM1:
RS232/422/485
Power
VideoOut
75
AudioI/O
Power
RECEIVER
STRAIGHT CABLE
MULTIPLEXER
COM IN
TX-
TX+
RX-
RX+
9600, 8, ODD, 1
COM2:
RS232
COM1:
RS232/422/485
12 VAC
KBD4000
STRAIGHT
CABLE
DIRECT
MODE
1
2
3
4
8
7
6
5
RX-
RX+
TX-
TX+
9600, 8, ODD, 1