HP 8719ET Reference Manual page 105

C2 (ES) Full two-port error-correction is on and the reverse sweep
is not updated each sweep
Any one of the following causes the reverse sweep not to be
updated each sweep:
• the instrument uses a mechanical switch, for example
Options 85 and 007.
• different channel power ranges (PORT POWER
UNCOUPLED) which puts the test set switch in HOLD
mode except Option 400 (dual step attenuators).
• the user manually puts the test set switch in HOLD
mode (TESTSET SW 0 or >1).
Del Electrical delay has been added or subtracted, or port
extensions are active. (See the "Operatiing Concepts"
chapter of the user's guide and the
Chapter 5 , "Hardkey/Softkey
ext Waiting for an external trigger.
Ofs (ES) Frequency offset mode is on. (See the "Making Mixer
Measurements" chapter in the user's guide.)
Of? (ES) Frequency offset mode error, the IF frequency is not
within 10 MHz of expected frequency. LO inaccuracy is the
most likely cause. (See the "Making Mixer Measurements"
chapter in the user's guide.)
Gat Gating is on (time domain Option 010 only). (For time
domain measurement procedures and theory, refer to the
"Making Time Domain Measurements" chapter of the
user's guide.)
Hld Hold sweep. (See
Reference.")
man Waiting for manual trigger.
PC Power meter calibration is on. (For power meter
calibration procedures, refer to the "Calibrating for
Increased Measurement Accuracy" chapter of the user's
guide.)
PC? The analyzer's source could not be set to the desired level,
following a power meter calibration. (For power meter
calibration procedures, refer to the "Calibrating for
Increased Measurement Accuracy" chapter in the user's
guide.)
Scale Ref
Reference.")
in Chapter 5 , "Hardkey/Softkey
HOLD
Front/Rear Panel
Analyzer Display
key in
3-7