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9 rs485, 10 other interfaces – IC Realtime H.264E Hybrid DVRs 4/8/16-CH Analog + 4/8/16-CH IP User Manual

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Material of the
touch

Silver

Rated switch capacity

30VDC 2A, 125VAC 1A

Maximum switch power

125VA 160W

Maximum switch voltage

250VAC, 220VDC

Rating

Resistance

Load)

Maximum switch currency

1A

Between touches with same
polarity

1000VAC 1minute

Between touches with different
polarity

1000VAC 1minute

Insulation

Between touch and winding

1000VAC 1minute

Surge voltage

Between touches with same
polarity

1500V (10×160us)

Length of open
time

3ms max

Length of close
time

3ms max

Mechanical

50×106 times (3Hz)

Longevity

Electrical

200×103 times (0.5Hz)

Temperature

-40℃ ~+70℃

3.9 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. Please follow the instructions to configure a camera to enable each PTZ device on the
DVR.

Figure 3-8

3.10 Other Interfaces

There are still other interfaces on the DVR, such as USB ports. You can refer to Figure 3-9 for
more information.

485 Port