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ERIES
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.01023245
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3-5
Table 3-2. Low RF Relay Function
Mode
Compact HPA Operational State
HTD Standby
BONS
(NOTE4)
Transmit
(NOTE4)
Fault
(NOTE5)
Flexible
No LoRF
No LoRF
No LoRF
Yes/No LoRF
Yes LoRF
Rigid
Yes LoRF
Yes LoRF
Yes LoRF
Yes/No LoRF
(NOTE3)
Yes
LoRF
Table 3-2 Notes:
1.
Yes LoRF= relay de-energized; pin 1 connected to pin 2, pin 3 disconnected from pin 2.
2.
No LoRF= relay energized; pin 1 disconnected from pin 2, pin 3 connected to pin 2.
3.
If an RF Inhibit is issued from any source except RF Switch Port, Low RF relay=Yes LoRF.
4.
BONS is the Beam On Sequence, the time during which the High Voltage turn-on sequence is performed.
5.
Fault refers to the Fault state. See Chapter 5 for detailed description.
6.
When the amplifier is used in a switching system with switched inputs, the fault relay should be set to “XMIT”.
The RF switch system interface is located at connector J5 on the rear panel of the CHPA. J5 is a
15-pin D-type connector with pin assignments as shown in Table 3-3.
Table 3-3. RF Switch Pin Assignment (J5)
Pin #
Signal Name
Remarks
1
Low RF NC
Relay NC 1 (Normally closed when coil is de-energized; closed to
pin 2 during Low RF Alarm or the Fault state.)
2
Low RF Common
Relay Common 1
3
Low RF NO
Relay NO 1 (Normally open when coil is de-energized; open from pin
2 during Low RF Alarm or the Fault state.)
4
Fault NC
Relay NC 2 (Normally closed when coil is de-energized; closed to
pin 5 during the Fault state or other condition chosen for this relay.)
5
Fault Common
Relay Common 2
6
Fault NO
Relay NO 2 (Normally open when coil is de-energized; open from pin
5 during the Fault state or whatever condition chosen for this relay.)
9
Sum Fault NC
Relay NC 3 (Normally closed when coil is de-energized; closed to
pin 10 when the CHPA is latched into the Fault state.)
10
Sum Fault Common
Relay Common 3
11
Sum Fault NO
Relay NO 3 (Normally open when coil is de-energized; open from pin
10 when the CHPA is latched into the Fault state.)
14
RF Inhibit
Closed to pin 15 for “No RF Inhibit.”
15
RF Inhibit Return
Input Return
7,8, 12, 13 Not used
Table 3-3 Notes:
1.
Outputs are dry relay contacts rated up to 50 VDC, 50 mA and are connected in fail-safe mode.
2. The RF Inhibit requires a maintained closed-contact with RF Inhibit return and an open circuit for RF Inhibit. For this reason, a
jumper plug is shipped installed on the unit. This jumper is not required for switching system. This RF Inhibit command is
executed regardless of the current control mode.
