HP 8901B Operation And Calibration Manual page 46

Installation Model 8901B
Line Voltage and Fuse Selection
BEFORE PLUGGING THIS INSTRUMENT into the Mains (line) voltage,
be sure the correct voltage and fuse have been selected.
Verify that the line voltage selection card and the fuse are matched to the power source. Refer to
Figure 2-1, Line Voltage and h e Selection.
h s e s may be ordered under HP part numbers 2110-0083, 2.5A (250V normal blow) for 115 Vac
operation and 2110-0043, 1.5A (250V normal blow) for 230 Vac operation.
Operating voltage is shown
in module window.
Selection of Operating Voltage and Fuse Replacement
1.
Open cover door,
pull
the
FUSE
PULL
lever and rotate to left. Remove the fuse.
2.
Remove the Line Voltage Selection Card. Position the card so the line voltage appears at top-left
3.
Rotate the
FUSE PULL
lever to
its
normal position. Insert a fuse
of
the correct value in the holder.
corner.
Push
the card
firmly
into the slot.
Close the cover door.
Figure 2-1. Line Voltage and Fuse Selection
HP-IB Address Selection
The HP-IB address switches are located within the Modulation Analyzer. The switches represent
a
five-bit binary number. This number represents the
talk
and listen address characters which an HP-IB
controller must generate. In addition, two more switches allow the Modulation Analyzer to be set to
talk
only or to listen only.
2-4