Specifications

30 Pelco Manual C1920M-D (4/03)
Comm. Type
• If you have a stand-alone multiplexer, it must be the master.
• If you have a KBD4000/KBD4002 keyboard in polled communication mode
(keyboard switch 4 OFF): This is the normal mode of communication. If you have
one multiplexer connected to a keyboard, the multiplexer must be set for master.
If you have more than one multiplexer connected to a keyboard, one multiplexer
must be the master and all others slaves. The keyboard must be connected to
the master multiplexer. Refer to Figure 22.
• If you have a KBD4000/KBD4002 keyboard in non-polled mode (keyboard switch
4 ON): All multiplexers are slaves and the keyboard is the master. Refer to your
keyboard manual for more information about polled and non-polled modes.
• If you have an MX4000SVR server: If you have one multiplexer connected to a
server, it must be set for master. If you have more than one multiplexer con-
nected to a server, one multiplexer must be the master and all others slaves. The
server must be connected to the master multiplexer. Refer to Figure 22.
Relay Output
Operates the relay on the back of the multiplexer. The relay is used to change the
VCR to its alarm recording speed (refer to step 5,
Alarms , in the Installation section).
6. When you finish all the changes you want to make, go to EXIT or BASIC SETUP.
7. Press the +/- button to exit programming mode or to go to the basic System Setup
menu.
When HELP is highlighted, you can press the +/- button to display a help screen that tells
you which buttons to press to configure specific options.
NOTE: Remember, one
multiplexer must be the
master. If your system uses
multiple multiplexers, one
must be programmed as
master and the others as
slaves.