Keyboard Connections - Bosch Divar 700 Series Installation And Operation Manual

Divar 700 Series
4.9

Keyboard connections

The keyboard input and output connectors are used to connect a Bosch Intuikey keyboard to
one or more units. For one unit, connect the keyboard to the KBD in connector. For more
units, connect a cable between the KBD out connector of the first unit and the KBD in
connector of the following unit. Up to 16 units can be connected and controlled in this
manner with one keyboard.
For short distances (up to 30 m), standard 6-core telecom flat cable can be used to supply
power and signal connections for the keyboard (LTC 8558/00).
For distances over 30 m between the keyboard and the DVR, the Keyboard Extension Kit
(LTC 8557) must be used. This kit provides junction boxes, cables, and the appropriate power
supply for the external keyboard. The recommended cable type is Belden 8760 or equivalent.
Termination
Connect the keyboard terminator (supplied with the Intuikey keyboard) to the KBD out
connector. If multiple units are controlled with a single keyboard, the KBD out connector of
the last unit must be terminated.
Specifications
Communicaton protocol: RS485
Maximum signal voltage: ± 12V
Power supply: 11 - 12.6 VDC, maximum 400 mA
Maximum cable length: 30 meters (using standard 6-core telecom flat cable), or 1.5
kilometers (using Belden 8760 or equivalent in combination with the LTC 8557).
Cable type: black (cross-over) cable (supplied with keyboard)
Termination: 390 ohm terminator
KBD IN
KBD OUT
Figure 4.13 Keyboard input and output connectors
Pin number
1
2
3
4
5
6
Table 4.2 Keyboard In - RJ11 socket (KBD in)
Pin number
1
2
3
4
5
6
Table 4.3 Keyboard out - RJ11 socket (KBD out)
Bosch Security Systems
Signal
+12 VDC (11 V Min to 12.6 V Max, 400 mA Max)
System ground
Keyboard plus line
Keyboard minus line
System ground
System ground
Signal
No connection
System ground
Keyboard minus line
Keyboard plus line
System ground
No connection
Installation and Operation manual
Hardware setup | en
F.01U.140.955 | v3.0 | 2009.11
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