Videovox Pro LN series, Руководство пользователя

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Insulation between contacts with
same polarity
1000VAC 1minute
between contacts with
different polarity
1000VAC 1minute
between contact and
winding
1000VAC 1minute
Surge
voltage between contacts with
same polarity
1500V (10
×
160us)
Length of
open time
3ms max
Length of
close time
3ms max
Longevity
Mechanical 50 × 106 MIN(3Hz)
Electrical 200 × 103 MIN (0.5Hz)
Working
Temperature
-40 ~+70
3.7 RS232
You can connect the DVR with POS or Keyboard through RS232.
With POS system, the DVR can communicate through RS232 and network. For the
POS system, the DVR can integrate the text content and even search the record
through the info.
The series DVR also support NKB operation. You can operate the DVR from the
keyboard controls instead of using the control pad on the front panel of the unit.
To connect a NKB keyboard to the DVR:
1. Assemble the KBD keyboard according to the instructions in its accompanying
installation manual.
2. Connect the KBD keyboard into one of the RS232 ports on the DVR or through
network.
3.8 RS485
When the DVR receives a camera control command, it transmits that command up
the coaxial cable to the PTZ device. RS485 is a single-direction protocol; the PTZ
device can
’ t return any data to the unit. To enable the operation, connect the PTZ
device to the RS485(A,B) input on the DVR. Since RS485 is disabled by default for
each camera, you must enable the PTZ settings first. This series DVRs support
multiple protocols such as Pelco-D, Pelco-P.
To connect PTZ devices to the DVR:
1. Connect RS485 A,B on the DVR rear panel.
2. Connect the other end of the cable to the proper pins in the connector on the
camera.
3. Follow the instructions for configuring a camera to enable each PTZ device on the
DVR.