Pelco C1977M-D User Manual
Pelco Manual C1977M-D (6/02)
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Rear Panel Connectors
The network interface, a terminal port for configuration and management, an alarm I/O-port, and the
power connector reside on the unit’s rear panel (see Figure 2).
power connector reside on the unit’s rear panel (see Figure 2).
1
2
5
6
3
4
Key:
1 = Ethernet port for connecting the PelcoNet Transmission System to the LAN with Ethernet (Cat5)
1 = Ethernet port for connecting the PelcoNet Transmission System to the LAN with Ethernet (Cat5)
cable
2 = Yellow TX LED for monitoring packet-sending over the UTP port
3 = Green LINK LED for link test of UTP connection
4 = RS-232, for connecting to the serial port of a PC
5 = Alarm input and relay output
6 = Power connector for connecting the AC plug power adapter
3 = Green LINK LED for link test of UTP connection
4 = RS-232, for connecting to the serial port of a PC
5 = Alarm input and relay output
6 = Power connector for connecting the AC plug power adapter
Figure 2. Rear Panel Connectors
The green LINK LED provides LAN status information. If the LED is on, the LAN port is properly con-
nected and synchronized to a LAN. The yellow TX (transmit) LED blinks each time information is trans-
mitted. The LED does not blink when information is received.
nected and synchronized to a LAN. The yellow TX (transmit) LED blinks each time information is trans-
mitted. The LED does not blink when information is received.
The RS-232 control terminal lets you connect to the serial port of a PC for simple configuration and/or
operation of management functions. The interface features the full suite of RS-232 flow control signals.
operation of management functions. The interface features the full suite of RS-232 flow control signals.
The alarm I/O port lets you directly connect external signaling devices (for example, contacts). Also, the
relay output facilitates switching of peripheral devices (lights or electric door openers, for example).
relay output facilitates switching of peripheral devices (lights or electric door openers, for example).
NOTE:
Use only the supplied AC plug power adapter. If the adapter, the cable, or the connector show any
sign of damage, do not use the power adapter. Send it in for repair or replacement. Never try to use any
power adapter except the supplied one.
power adapter except the supplied one.
See the
Hardware Installation
section for information on interfacing peripherals to the unit.