Chapter 13 557
Softkey Descriptions
Softkey Descriptions
Understanding Analyzer Passcodes
Passcodes activate specific softkey functions and protect the correction
data from accidental erasure or modification. The two passcodes,
−37 Hz and −2001 Hz, are explained below.
−37 Hz Passcode
Use the −37 Hz passcode to perform the following functions.
• Replace the current calibration-factors with the default calibration
data provided by
DEFAULT CAL DATA.
• Check the accuracy of the 10 MHz frequency reference using
VERIFY TIMEBASE. Refer to the 10 MHz reference accuracy
verification test in the calibration guide for your instrument.
• Bypass the CAL OUT set-up check within individual self-calibration
routines.
−2001 Hz Passcode
Use the −2001 Hz service passcode to perform the following functions.
• Set the start frequency, stop frequency, and step size of the flatness
correction points using
INIT FLT.
• Edit the flatness-correction constants using
EDIT FLATNESS.
• Edit the A12 amplitude control step-attenuator correction constants
using SET ATTN ERROR.
• Set the correction factor for the 10 MHz frequency reference
(standard timebase).
• Modify the displayed power units that appear when the instrument
is first turned on using STOR PWR ON UNITS.
• Bypass the
CAL OUT signal check within individual self-calibration
routines.
Entering a Passcode
The passcode must be entered before pressing CAL. Press the following
keys to enter a passcode.
FREQUENCY
−37, HZ or −2001, HZ
CAL
When SRVC appears in the lower-left corner of the display, the passcode
has been accepted.
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