Laser Head System Signal Chart - HP 5501A Operating And Service Manual

Model 5501A
Installation and Operation
Table 2-7. Laser Head System Signal Chart
Source
Ext. Pwr. Sup.
Ext. Pwr. Sup.
Ext. Pwr. Sup.
Accessory
Equipment
Function
Accessory +15V Operating Power
Accessory +15V Return
System Reference Measurement
signal, equal to the difference in
frequency between the Laser f, and
f,
components.
External +15V power input
External -15V power input
+5V power test point
Power Ground
+15V sample for diagnostics
-15V sample for diagnostics
+5V sample for diagnostics
System Common return
Active low signal; external input to
initiate PZT Tune/Check cycle
Active high diagnostic signal indicating
failure of the PZT Tuning/Check cycle
Active high diagnostic signal indicating
PZT Tuning/Check cycle is in process
Active high diagnostic signal indicating
Laser Tube current is not within
minimum and maximum limits
Active high diagnostic signal indicating
any or all of the following conditions:
1 . Laser Tube current out of
specifications
2. PZT voltage out of specifications
3. Retune/Check cycle in process
Laser current sample for diagnostics
PZT voltage sample for diagnostics
Active low diagnostic signal
indicating Laser is properly tuned
- -
Destination
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
(test use only)
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Accessory
Equipment
Signal Name
Fused +15V
Fused +15V
RET
!El
R E F
+ I 5V
-1 5 V
+5V
GND
+I5 TEST
-15 TEST
+5 TEST
SYS COM
RETUNE
c M D
RETUNE
FAILURE
RETUNE
STATUS
LASER
CURRENT
ERROR
ERROR
L I MON
TEST
PZT MON
TEST
R E F OK
STATUS
Input
12-A
12-8
J2-D
J3-E
Output
Jl-A
)I-B
J1-C
Jl-D
12-C
J3-A
J3-B
J3-C
13-D
13-F
J
3-1
13-K
J3-L
J 3-M
13-N
J3-P