NDR-EA3104M User’s manual - 1.0 version
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7. OPERATING THE DVR VIA SYSTEM KEYBOARDS
Operating the DVR via NV-KBD30 and NV-KBD70 system keyboards.
NDR-EA3104s may be remotely controlled using NV-KBD70 or NV-KBD30 keyboard. System is
controlled either via RS-485 or RS-232 (after using an appropriate adapter) port connection. Thanks to
this, controlling large systems is possible (up to 9 DVRs with NV-KBD30 and up to 32 in case of NV-
KBD70). The RS-485 wire length should not exceed 1200m. In such a system, devices are cascade
connected, with taps length not exceeding 1,5m.
Keyboards have their keys laid out in accordance with appropriate buttons in IR remote, serving the
same function. Additional informative feature is the LCD display located in the keyboard, displaying
information about active functions, transmission parameters etc.
7.1 Controlling the DVR via KBD70 keyboard.
Connection diagram:
Note:
Both the cameras, DVRs and keyboards in one system should have the same control protocol and
transmission speed set in their menus (check the user’s manual of the camera for more details).
OPERATING THE DVR VIA SYSTEM KEYBOARDS
RS-485 (+)
RS-485 (
-
)
Up to 31 DVRs connected as above
TRX +
TRX -
T
R
X
+
T
R
X
-
T
R
X
+
T
R
X
-
KBD 70 keyboard
Sample configuration:
Main Menu
Network -> Set Port ->
Set Baud Rate -> Dome2: 9600
Main Menu
Network -> Set Port ->
Com Ports -> Dome2:NC DVR
RS-485
R
S
-4
8
5
R
S
-4
8
5
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