R T M 3 2 0 5 U s e r M a n u a l
96
C H A P T E R T E N
Alarm Option
The Alarm Option provides an open-collector output that indicates when the GPS Subsystem has lost
lock, or when serious hardware faults are detected. For a detailed description of the faults see
Ap-
pendix G - System Faults
.
Care should be taken not to directly connect this open-collector output to a voltage source. A series
current-limiting resistor of at least 1k ohms in value should be used. The pull-up voltage must not
exceed 40V. For more details see
Appendix K - Specifications, Optional Alarm Output
.
View the Alarm Output Connector
The
cpuio
command will list any connector on the RTM3205 that has an I/O signal. Connectors are
identified as A, B, C or D.
Command:
cpuio
RTM3205 reply:
CPU I/O C - OPEN COLLECTOR ALARM OUTPUT is Installed
10 MHz Low-Phase-Noise Option
The RTM3205 can provide one or two 10 MHz sine wave outputs with very low phase noise. For
details see
Appendix K - Specifications, Optional 10 MHz LPN Output
.
View the 10 MHz Connector
The
cpuio
command will list any connector on the RTM3205 that has an I/O signal. Connectors are
identified as A, B, C or D.
Command:
cpuio
RTM3205 reply:
CPU I/O C - 10MHz LOW PHASE NOISE OUTPUT is Installed
Summary of Contents for RTM3205
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