Basic Operating Procedures; Instrument Turn On - HP 3580A Operating And Service Manual

Section III
BASIC OPERATING PROCEDURES
Model 3580A
3-191. BASIC OPERATING PROCEDURES.
3-192. Instrument Tum On.
3-193. Power Line Operation.
a. Check the line voltage at the point of installation.
b. Refer to Figure 3-33 and set the 3580A for the line
voltage to be used (100 V, 120 V, 220 V or 240 V). line
voltage must be within
+
5% to - 10% of voltage setting.
c. Verify that the proper fuse is installed in the fuse
holder:
line Setting Fuse Type -hp- Part No.
lOOV/120 V 0.5 A, 250 V 2110-0012
Normal Blow
220V/240 V 0.25 A, 250 V 2110-0004
Normal Blow
d. Connect the detachable ac power cord to the rear
panel power receptacle and to the power source.
e. Set the POWER switch to the ON (AC) position. The
POWER light will illuminate.
Operating voltage is shown in module window.
f. Allow approximately 15 seconds for the CRT to
warm up. Adjust the INTENSITY and FOCUS controls for
a bright, clear presentation on the CRT. When the
instrument is initially turned on, the display may be similar
to the one shown in Figure 3-34. This display reflects the
preferred states of the storage elements in the digital
memory and is not meaningful. To clear the display, press
the CLEAR WRITE button.
g. Allow a warm-up period of at least 1 hour before
using the 3580A in a critical measurement application.
Figure 3-34. Typical Turn On Display.
SELECTION OF OPERATING VOLTAGE
1. Disconnect power cord and slide cover to left to gain
access to fuse compartment.
2. Remove line fuse by pulling outward on FUSE PULL.
3. To select operating voltage:
a. Rotate FUSE PULL to left and remove PC board.
b. Orient PC board so that desired voltage marking is
on the top, left-hand side.
c. Push PC board firmly into its slot.
4. Rotate FUSE PULL back to its normal position and insert
fuse in holder. Be sure to use the correct fuse value.
Figure 3-33. Voltage Selection.
3-26