Microwave Radio Communications SCM4000, Technical Reference Manual

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7
Replacement Parts 7-1 SCM4000 Technical Reference Manual
Replacement Parts
7.1 Chapter Overview
This chapter describes replacement parts available for the
SCM4000 Single Carrier Modem.
Since there are no supported field repairs on the SCM4000,
the only parts available are external cables and power fuses.
7.2 External Cables
The external cables for the SCM4000 are listed in Table 7-1 . If
you need something that is not listed, ask your Sales
Representative or consult the factory.
7.3 Power Fuses
The SCM4000 configurations operate on the following optional
AC and DC power sources:
• 120/240 VAC, 50/60 Hz
• +24 to +48 VDC
Table 7-1: SCM4000 System Cables
Description Comments
AC Power Cable Connects AC power to the SCM4000.
Audio Connector Connector only - Mates with
SCM4000
AUDIO A and AUDIO B
connectors.
Null Modem Cable Connects SCM4000 RS-232 front
panel connector to PC RS-232
connector.
• -24 to -48 VDC
Power fuses for the optional AC and DC configurations of the
SCM4000 are located on the rear panel Power Switch
Assemblies, as shown in
Figure 7-1 and Figure 7-2 .
Figure 7-1: Power Fuse Location - AC Power Option
Figure 7-2: Power Fuse Location = DC Power Option
Fuse ratings for the optional AC and DC power sources are
shown in
Table 7-2 .
Table 7-2: Fuse Ratings
Operating Voltage Fuse Rating
240 VAC, 50/60 Hz 1.0A, 250V AGC, Fast Blow
120 VAC, 50/60 Hz 2.0A, 250V AGC, Fast Blow
POWER IN
IF IN
Fuse (Located Under
Safety Cover)
Power
Switch
POWER IN
FUSE
Power
Switch
Fuse