HP 5355A - Special Modes

Mode! 5355A
Operation and Programming
3-48. RESET FUNCTION
3-49. The RESET function, as shown
requires that the MANUAL and OFFSET keys
be pressed simultaneously. This action resets the display during either DATA ENTRY mode of
operation. The display resets to 1.5 GHz (or low frequency listed in paragraph 3-17) when
in the manual mode and resets to -1. GHz when in the offset mode. The RESET function allows
for error correction in the DATA ENTRY mode.
3-50. SPECIAL MODES
3-51. The two special modes are (1) the FM tolerance mode which increases FM tolerance from
15 MHz p-p to 60 MHz p-p in the automatic mode of operation, and (2) the continuous
calibration mode during pulse operation which causes the measurements to be continuously
calibrated instead of just the first 10 measurements, as in normal calibration. Procedures for
entering the special modes are described below.
3-52. FM TOLERANCE. To enter the special FM tolerance mode during the CW mode of
operation, simultaneously press keys. The [ • key will continue flashing
during this mode.
3-53. CONTINUOUS CALIBRATION. To calibrate continuously during the pulse mode of
operation, simultaneously press
keys. A flashing L will be displayed in the most
significant digit position during calibration.
3-54. POWER-UP CODES
3-55. When power is applied to the 5355A, certain error codes are displayed on the 5345A to
indicate error conditions. Diagnostic indications used for troubleshooting are listed in para¬
graph 8-197. Operating error indications are listed below:
DISPLAY
CONDITION
(CW Automatic only!
5345A rear panel GATE CONTROL INPUT switch
in wrong position. Should be in INTERNAL
position. - - .
Harmonic number (n}=0 due to a low input fre¬
quency or due to the CHECK/COM A/SEP
switch on 5345A front panel in CHECK position.
Should be in COM A or SEP.
indicates the CHECK/COM A/SEP switch on
5345A front panel in CHECK position. Should be
in COM A or SEP.
3-18