Crescend Technologies C7 SERIES Manual de instalação e serviço - Página 10

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Figure 2-2. C7 Series Amplifiers in Rack, Rear View
2.5.
AMPLIFIER SUMMARY ALARM
The summary alarm connections is made through a filtered feedthrough connector on the
rear of the amplifier (see Table 2-1).
PIN
FUNCTION
Summary
ALARM
Alarm
Copyright Crescend Technologies
Table 2-1. Summary Alarm Connection
DESCRIPTION
Indicates when:
1. The output power is low,
or
2. VSWR cutback is
activated, or
3. Thermal cutback is
activated
10
CONDITION
Alarm: < 1 VDC
Normal Operation: > 8 VDC
(up to Vcc)
Alarm: < 1 VDC
Normal Operation: 4 - 5 VDC
1.8 kOhm between pin and ground,
<500 pF
(TTL compatible)
040003A005 Rev 1
APPROPRIATE
LOAD
> 10 kOhm,
< 100pF