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Divar 700 Series Hardware setup | en 31
Bosch Security Systems Installation and Operation manual F.01U.246.471 | v3.6 | 2011.11
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 Divar 700 units can be connected and controlled in
this manner with one keyboard. Additionally up to 10 Divar 2 recorder units can be operated
with the same keyboard.
The following accessories are available:
– 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.
– By using a keyboard Port Expander unit (LTC 2604) up to 4 Intuikey keyboards can
operate recorder units.
– With the Video Manager (LTC 2605), up tp 16 Divar recorders and up to 6 monitors can
be operated from 1 to 4 separate Intuikey keyboards.
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
Figure 4.13 Keyboard input and output connectors
Table 4.2 Keyboard In - RJ11 socket (KBD in)
Pin number Signal
1 +12 VDC (11 V Min to 12.6 V Max, 400 mA Max)
2 System ground
3 Keyboard plus line
4 Keyboard minus line
5 System ground
6 System ground
KBD IN
KBD OUT