Operations Manual: HPAC-100/125/150/200/250-RM SSPA
3-9
3 Operation of Stand-Alone Unit
Default Menu Settings
The HPAC-100/125/150/200/250-RM has default menu settings when delivered.
These initial settings are shown in Table 3-5.
Table 3-5: Initial factory menu settings.
When the unit is turned off, all menu settings are stored in nonvolatile memory. This
permits the unit to return to the same state when power is restored. Warning: If the
unit was powered down while in the unmuted state, it will be unmuted when
powered up. For safety concerns, it is advisable to mute the amplifier before
removing power.
Remote Operation
The HPAC-100/125/150/200/250-RM has two means for remote operation: a parallel
port and a serial port.
Parallel Port Monitors and Controls
The parallel port contains a series of Form C contact closures for monitoring summary
faults, low RF output power, and the mute status; opto-isolated inputs for controlling the
mute status and clearing faults; voltage outputs for monitoring the output power and unit
temperature; and a voltage input for controlling the attenuation level. Line 3 of the OPS
menu must be set to “REM” and pin 4 of DIP switch 7 must be set to
ON to allow inputs
from the parallel port. The pin out of the parallel connector is given in Table 3-3.
Contact Closures: A Form C contact closure contains three pins: a common,
a normally open contact, and a normally closed contact. Three individual sets of
contacts are provided for monitoring a summary fault. Each set reports the
same fault. A set of contacts is provided for monitoring whether the output
power level drops below the Low RF Power Threshold. The last set of contacts
reports the mute state of the amplifier. The contacts have the following resistive
load ratings: 30VDC @ 1A, 110 VDC @ 0.3A, or 125 VAC @ 0.5A. The
contacts can be monitored at any time, even when the unit is in local mode.
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Summary of Contents for HPAC-100-RM
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Page 68: ...HPAC 100 250 doc 10 10 01 C Band SSPA Rack Mount Model HPAC 100 125 150 200 250 RM ...
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