75
A/B cable of the RS485 is for the A/B cable connection of the speed PTZ.
2.3.4
Alarm relay specifications
Model:
JRC-27F
Material of the
touch
Silver
Rating
（
Resistance
Load
）
Rated switch capacity
30VDC 2A, 125VAC 1A
Maximum switch power
125VA 160W
Maximum switch voltage
250VAC, 220VDC
Maximum switch currency
1A
Insulation
Between touches with same
polarity
1000VAC 1minute
Between touches with different
polarity
1000VAC 1minute
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
Longevity
Mechanical
50×106
MIN
(3Hz)
Electrical
200×103
MIN
(0.5Hz)
Temperature
-40
℃
~+70
℃
2.4 Bidirectional talk
2.4.1
Device-end to PC-end
Device Connection
Please connect the speaker or the pickup to the first audio input port in the device rear panel. Then
connect the earphone or the sound box to the audio output port in the PC.
Login the Web and then enable the corresponding channel real-time monitor.
Please refer to the following interface to enable bidirectional talk. See Figure 2-45.
Figure 2-45
Listening Operation
At the device end, speak via the speaker or the pickup, and then you can get the audio from the earphone
or sound box at the pc-end. See Figure 2-46.
Summary of Contents for NVR-ELT-16
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