HP 8341b Operating Instructions

Machine malfunction: If the UNLEVELED annunciator lights, and the cause is not a request for
excessive power, one or more of the power circuits are malfunctioning. If this happens, press [INSTR
PRESET] which will restore standard instrument conditions, then re-enter the desired instrument
configuration. If the UNLEVELED annunciator remains lighted, shut down the instrument and consult
the In Case of Difficulty section in this manual.
Exception: open-loop operation. The ALC can be bypassed by pressing [SHIFT] [METER], as
described in Figure 3-16. Under these conditions the UNLEVELED annunciator is lighted, but acts as a
reminder in this case instead of a warning.
DIAGNOSTICS
Test this display (and the three other displays) by pressing and holding [INSTR PRESET], which will
cause the UNLEVELED annunciator to light, then release [INSTR PRESET] and press [SHIFT] [FREE
RUN] which will light every segment of the LED display (“88888”). Press [INSTR PRESET] or cycle
the POWER switch to cancel this diagnostic test.
NOTE: [INSTR PRESET] will restore the instrument to its standard starting condition. Cycling
POWER switch will restore the instrument to its previous state.
Figure 3-3. Power dBm Display (2 of 2)
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Operating Information
HP 8340B/41B

HP 8341b Specifications

General

Brand	HP
Model	8341b
Category	Inverter
Language	English