Paradise 205486 REV F - Manual (Page 32)

32 208495 REV C Operations Manual, HPA2, Compact Outdoor SSPA
3.1.1 Amplifier Enable (Mute/Unmute) (J4)
The Compact Outdoor Amplifier has no on/off switch or circuit breaker in the AC Input path.
As soon as AC power is applied to J7, the unit’s power supplies and microcontroller are
enabled. The operator will be able to observe the forced convection cooling fans running.
However, the internal amplifier module is disabled until the Mute Line Input (J4 – Pin B) is
pulled to Ground (J4 – Pin V).
If it is desired to have the RF enabled every time the AC input is applied, a permanent
connection can be made from J4-Pin B and Pin V.
3.1.2 Gain Adjust Input (J4)
The Gain Adjust Input allows an analog voltage that is applied between (J4 – Pin A) and
Ground (J4 – Pin V) to control the gain of the amplifier. The gain is adjustable over a 20 dB
range with 0.1 dB resolution. The applied voltage is directly proportional to amplifier gain.
2.5 VDC = Maximum Gain: 75 dB
0.5 VDC = Minimum Gain: 55 dB
The Compact Outdoor SSPA is factory default to have maximum gain with no analog gain
adjust. The gain adjustment must be enabled by running the setup program from a host PC.
This prohibits any accidental gain adjustments that may occur from unintentional analog
voltages that may be present on the Gain Adjust Control J4-Pin A.
The gain is also adjustable using a host PC and the supplied Teledyne Paradise Datacom
Universal Monitor and Control program. See the Serial I/O Section for details on Serial
Control.
3.1.3 Alarms (J4)
A variety of alarm signals are present at the M&C connector, J4. Both Form-C relays and
open collector outputs are available. An amplifier summary alarm is available in both Form C
relay and open collector output. Detailed internal faults are available in open collector form
and include: voltage, current, and over-temperature.
3.1.3.1 Summary Alarm (J4) Form C Contacts
The Summary Alarm is accessible in both Form C relay and open collector format. The form
C relay is “energized” under normal operating conditions and “deenergized” when a fault
condition exists.
3.1.3.2 Auxiliary Alarm (J4) Form C Contacts
The Auxiliary Alarm relay is an end user alarm that can be used to signal an alarm condition
that is dependent on the state of the Auxiliary Input (J4-Pin P).