KALATEL CBR-KB3, Installation And Operation Manual

Installation and Operation Manual

0150-0133

5-4

Revision B

The keyboard-multiplexer link may be idle for many reasons.  For example, the RS-485
communication link may have been broken, the controlling keyboard may have lost power or be
malfunctioning, or the operator may have forgotten to disconnect the controlling CBR-KB3 from the
multiplexer.

When a multiplexer does not detect any commands from its controlling CBR-KB3 keyboard for more
than 30 minutes, it will send a disconnect  message to the CBR-KB3 keyboard, and then the
multiplexer disconnects itself from the keyboard.

If it detects the 

disconnect

  message from the multiplexer, the CBR-KB3 then disconnects also, and

the display shows:  

Standing by...

5.3 Network Interfacing

Manual Polling Of The Network

During power up, the CBR-KB3 polls the network to see which units are connected and are available.
It can happen that units are added to or removed from the network, after the CBR-KB3 has been
powered up, and after it has polled the network.

In order to update the CBR-KB3’s memory as to the new state of the network, it is possible for the
operator to request a complete polling of the network.  This is done as follows:

1.

Press the 

Global

 key.  (See front

panel diagram on page 3-1).

The display shows:

(_ _) 

are the polled unit #s

Polling Units

(_ _)

The ID numbers are displayed as they are polled.  If the CBR-KB3 is busy controlling a multiplexer
when the user starts the polling, the CBR-KB3 tries to reconnect to that multiplexer after the polling is
done.

If the CBR-KB3 is in the 

Standing by ... 

state when the polling is started, the CBR-KB3 tries to

connect to the first available multiplexer (lowest ID number) connected to the network.

Setting the Network Address

When powering up, the CBR-KB3 Keyboard sets its network ID to 32 (default), or the highest unused
network ID.  The user may wish to change this ID to suit the particular network setup for his/her
installation.  This can only be done while the unit is in the 

Standing by ...

state.

1.

Press the 

#

 key two

times.

The display shows:

Enter a Source
Unit ID ...

Choose a network ID by pressing one of the 

numeric 

keys.  For addresses from 

1-16

, use the 

camera

keys without the 

SHIFT 

key active.  For addresses 

17-32

, activate the 

SHIFT

 key, and press the

appropriate 

camera

 key with the correct address using the red numbers for the 

SHIFT

ed values.