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Model 5501A
1 nstallation and Operation
b
1
2
3
4
10
11
1. +I5 UNBAL
Lights when +I5 Vdc power is high by approximately one volt or more; or when
(LED Lamp)
the -15 Vdc power input is low (i.e., less negative) by one volt or more.
2. -15 UNBAL
Lights when -15 Vdc power is high (i.e., more negative) by approximately one
(LED Lamp)
one volts or more; or when the +I5 Vdc power input is low (i.e., less positive) by
one volt or more.
3.
+I5 FUSE
Lights when +I5 Vdc fuse blows.
(LED Lamp)
4.
-15 FUSE
Lights when -15 Vdc fuse blows.
(LED Lamp)
5. POWER ON
Lights when external power has been applied to Laser Head.
(LED Lamp)
6.
LASER CURRENT
Lights to indicate Laser Tube current is not within appropriate operating limits.
(LED Lamp)
7.
RETUNE FAILURE
Lights to indicate the Laser Tube is not properly tuned or that retune cycle did not
(LED Lamp)
retune the laser.
8. RETUNE
Lights to indicate that retuning i s required or that retune cycle is in progress.
(LED Lamp)
Light should go out approximately 9 seconds after the RETUNE pushbutton is
depressed. If light remains on, a tuning fault is indicated.
9. RETUNE
Manually activates Retune sequence.
(Pushbutton)
10. REFERENCE SIGNAL
Allows the reference signals (REF and REF) and +15V power to be interconnected
(Connector, J I )
to other system components.
11. POWER
Provides connection point for external power supply input.
(Connector, 12)
12. DIAGNOSTIC
Allows monitoring of diagnostic signals and application of RETUNE command
(Connector,
J3)
by external equipment.
Figure 2-4. Controls, Connectors, and Indicators
2-6
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