GL-T8200 1- to 25-Watt 900-MHz Power Amplifier
Glenayre Document Number: 9110.01306
THEORY OF OPERATION
Rev. A: 03/23/99
Page: 6-8
Copyright © 1999 Glenayre
Print Date: 05/10/99
6.5.7
+5-Volt Internal Supplies
Both of the +5-volt supplies in the PA have an alarm window of +5.5 and +4.5 volts.
Exceeding either parameter results in an alarm condition only.
6.5.8
Temperature
The ambient temperature in the PA has an upper limit of +85 C. If this limit is exceeded,
the transmitter shuts down.
Table 6-2 Metered Parameter Thresholds
analog reading
upper
threshold
lower
threshold
PA
PA
total forward power (W)
25
1
total reflected power (W)
5
0
PA current Q1
1.6
none
PA current Q2
3.3
none
+36 Vdc
39
33
+28 Vdc
29
22
+5 Vdc
5.5
4.5
temperature
80
o
(alarm)
85
o
(fault)
-30
o
