HP 4395A - Page 310

Error Messages in Numerical Order
19 UNEXPECTED DATA DETECTED: CAL ABORTED
The signal measured for the level cal is not adequate for the calibration signal. (spectrum
analyzer mode only.)
26 PRINTER:not on, not connect, wrong address
The printer does not respond to control. Check the supply to the printer, online status, sheets,
and so on.
34 NO VALID MEMORY TRACE
If a memory trace is to be displayed or otherwise used, a data trace must rst be stored to
memory.
37 DISPLAY BUFFER IS FULL
The display buer is lled with the overlay traces or traces drawn by IBASIC DRAW/MOVE
commands, etc.
44 OVERLOAD ON INPUT B
The power level at one of the four receiver inputs exceeds a certain level greater than the
maximum input level.
45 OVERLOAD ON INPUT A
The power level at one of the four receiver inputs exceeds a certain level greater than the
maximum input level.
46 OVERLOAD ON INPUT R
The power level at one of the four receiver inputs exceeds a certain level greater than the
maximum input level.
48 PHASE LOCK LOOP UNLOCKED
EXT REF Input of 10 MHz is not proper
, or the instrument is needed to adjust or repair
. Check
the external reference signal rst. Contact your nearest Hewlett-Packard oce for adjustment
or repair.
50 CONT SWITCHING MAYDAMAGE MECH SW
RF output power switch, input attenuator switch at input R/A/B
, or internal mechanical switch
in the S-parameter test set is switching sweep by sweep
, because RF power level or the input
attenuator setting is dierent between two channels and the dual channel is turn on, or
continuous trigger mode is selected after full 2-port calibration is performed when HP 4395A
is used with the S-parameter test set. To avoid premature wearing out of the output power
switch, input attenuator switch, or internal switch of the S-parameter test set, change trigger
type to HOLD, SINGLE, or NUMBER of GROUP to hold sweep after measurement required. Or,
for example, turn o the dual channel, or set the power level and the input attenuator of both
channels to the same setting.
54 TOO MUCH DATA
Either there is too much binary data to send to the analyzer when the data transfer format is
FORM 2, FORM 3 or FORM 5, or the amount of data is greater than the number of points
.
Messages-16