Comtech EF Data SNM-1001 - Manual (Page 29)

Installation SNM-1001 Network Control Modem
2–8 Rev. 1
2.3.5 RX IF Input (CP2)
CP2 is the receive IF connector. The input impedance is 50
Ω
(75
Ω
optional).
In normal operation, the desired carrier signal level should read between -30 and -
55 dBm.
Signals between 50 and 180 MHz are selected and demodulated to produce clock and
data at the DATA I/O connector.
2.3.6 AC Power
The AC power is supplied to the modem by a standard, detachable, non-locking, 3-prong
power cord. Normal input voltage is 90 to 264 VAC, 47 to 63 Hz. The modem will
automatically switch between ranges. Maximum power consumption is less than 40W.
2.3.7 DC Power
DC power is available as an option. The DC power is supplied to the modem by a 3
position terminal block. Normal input voltage is ± 48 VDC,
±
10 % . Maximum power
consumption is less than 40W.
2.3.8 Chassis GND
A #10-32 stud is available on the rear panel for the purpose of connecting a common
chassis ground between all of the equipment.
Note: The safety ground is provided through the AC power connector.
2.3.9 AGC Test Point
The Automatic Gain Control (AGC) test point is a BNC connector on the back of the
modem chassis. This feature allows the user to monitor the AGC.