Figure 3-2. Hp5501B Rear Panel Connectors And Indicators (Continued) - HP 5501B Operating And Service Manual

4. +15V FUSE OPEN
5. -15V FUSE OPEN
6. +15V POWER ON
7. -15V POWER ON
8. READY
9. LASER ON
10. POWER
11. REFERENCE

Figure 3-2. HP5501B Rear Panel Connectors and Indicators (Continued)

3-12
RED LED LED lights if +15 Vdc fuse opens.
RED LED LED lights if -15 Vdc fuse opens.
GREEN LED LED lights when +15 Vdc power is applied
to the HP5501B.
GREEN LED LED lights when -15 Vdc power is applied to
the HP5501B.
GREEN LED LED remains off while heating rod to normal
operating temperature. At this point the
READY LED begins to flash and continues to
do so until the laser head reaches operating
temperature. When the laser head is ready
for use, the READY LED stays on steady
(i.e., Laser has achieved lock and is now
generating a stable reference signal).
AMBER LED LED lights to indicate that the high voltage
power supply (HVPS) is on and that laser
light is being emitted.
CONNECTOR Provides connection point for external power
(A1J5) supply input (i.e., 10778B Power Cable
connector).
CONNECTOR Allows the reference signals (REF and -REF),
(A1J6) and +15 power to be connected to other
system components (i.e., 10779B Reference
Cable connector).
HP5501B
Operation