Specifications

Document 12245 Rev. I Sheet 23 of 39
3.4 Clear Service Request (09)
This command clears a service request, and causes the service request contacts on the serial I/O connector
to stop indicating a fault condition. The service request contacts will remain in their non-fault state, unless a
new fault occurs.
This command differs from the Fault Reset command. This command does not attempt to clear any of the
faulting conditions. It simply causes the service request to stop being reported, so that the host does not have
to keep responding to an un-clearable fault condition.
The service request contacts can also be cleared by sending a Fault Reset (0A) instruction (see section 3.5),
if no active faulting condition still exists.
3.5 Fault Reset (0A)
This message is used to reset ALL of the latched faults being reported by the unit. Note that if any alarming
condition still exists, the fault will not be cleared.
If certain CPU faults exist when this command is received, a self-test will automatically be run before clearing
faults. Since the self-test delays operation of the SSPA logic for a few seconds, do not issue this command
repeatedly while a CPU fault exists.
There are no parameters with this command. If no fault condition still exists, the service request contacts will
also be cleared.
3.6 Self Test (0B)
This command runs the microprocessor diagnostic tests that are normally run on power-up. Any failure will be
reported as a CPU (hardware) fault, by the normal fault reporting mechanisms. The self-tests may take a few
seconds to run.
Many of the operations of the SSPA logic will be suspended during self tests, so make sure that this
command is not issued frequently.
3.7 Local Lockout (0E)
NOTE: The state of local lockout is tracked for protocol compatibility, although it will have no effect
on a device without local controls, such as an outdoor or antenna-mount amplifier without an
RCP-2001 connected to it.
For devices that have a local (manual operation) display/control panel, this message turns the Local Lockout
feature on or off. For outdoor and antenna-mount amplifiers, the optional RCP-2001 Remote Control Panel
provides this “local/manual” interface. When Local Lockout is turned ON, the operator will be able to view all
setup data and operating parameters, but not change them, from the local control panel. In response to any
control panel key press that would normally change data, the display will read “LOCKED” for a few seconds,
and then return to the menu from which the attempt to change data was made.
A one-byte parameter is sent in the message body:
30: Turns Local Lockout OFF
31: Turns Local Lockout ON; front panel controls are disabled.
This command has NO EFFECT on outdoor and antenna-mount amplifiers without an RCP-2001 connected.
3.8 Measured Parameter Data Queries (16)
For this series of messages, the message from the host controller must contain a sub-instruction data byte,
which immediately follows the instruction code (16). This byte specifies which particular measured parameter
you are requesting.
The response from the unit will have the same instruction code (16), and will contain a message body whose
first byte is the same sub-instruction code. The rest of the message body will contain the data requested by
the sub-instruction code.