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Ac power, Dc power, Tx if output connector (cp1) – Comtech EF Data SNM-1000 User Manual

Page 42: Rx if input connector (cp2), External reference (cp3), Ground connector (gnd), 6 ac power, 7 dc power, 8 tx if output connector (cp1), 9 rx if input connector (cp2)

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SNM-1000 Node Control Modem

Revision 3

Installation

MN/SNM1000.IOM

2–10

2.3.6 AC

Power

The AC power is supplied to the SNM-1000 by a standard, detachable, non-locking,
3-prong power cord. Refer to the following listing for AC power specifications.

Input power

50W max.

Input voltage

90 to 264 VAC, 47 to 63Hz.

Note: Unit switches ranges automatically.

Connector type

IEC

Fuse protection

1A slo-blo line and neutral fusing 5 mm type fuses.

2.3.7 DC

Power

For DC supplied units, the DC Power is supplied by terminal lugs installed on the back
panel. Refer to the following table for specifications

Input power

50W max.

Input voltage

38 to 64 VDC.

Connector type

Terminal Lug

Fuse protection

1A slo-blo 5 mm type fuses.

2.3.8

TX IF Output Connector (CP1)

CP1 is a BNC connector for the transmit IF signal. The standard output impedance is
75

Ω (50 Ω optional ), and the output power level is -5 to -30 dBm. In normal operation, the

output will be a 8PSK, QPSK/OQPSK, or BPSK-modulated result of the data connector
between 50 and 180 MHz, in 1 Hz steps.

2.3.9

RX IF Input Connector (CP2)

CP2 is a BNC connector for the RX-IF signal. The standard input impedance is
75

Ω (50Ω optional). For normal operation, the desired carrier signal level should be

between -30 and -55 dBm. Signals between 50 and 180 MHz are selected and demodulated
to produce clock and data.

2.3.10

External Reference (CP3)

CP3 is a BNC connector for an EX REF. The input impedance is 75

Ω.For normal

operation, the reference signal is

0 dBm.

2.3.11

Ground Connector (GND)

A #10-32 stud on the rear panel of the modem is used for connecting a common chassis
ground among all equipment. The AC power connector provides the safety ground.