HP 70000 series, User Manual

Page: 202 / 447

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PATHLOK On Off
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PARTIAL ERASE
erases all unprotected internal memory contents .
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PARTIAL ERASE also erases reserved
memory , except for the correction factors used by the calibration softkey functions , and
serial-number information.
Functional Type:
memory-related
Firmkey A ccess:
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Traces
Preset State:
Not aected by 4 IP 5 .
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PATHLOK On Off
(path lock on/o) species the signal path through the spectrum analyzer . Since the MMS
system is modular , the input signal can pass through dierent paths . F or example , two signal
paths are available for 100-kHz ltering when both the narrowband (HP 70902A IF section)
and wideband (HP 70903A IF section) IF Sections are incorporated into one system. If
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PATHLOK On Off is set to on when the 3 MHz lter is active , the signal path remains in the
wideband IF Section when the 100-kHz bandwidth is selected.
When a path is specied, signal inputs are limited to ports available on the path.
When external mixing is not used,
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PATHLOK On Off limits frequency measurements to a
harmonic mixing product when measuring with the microwave RF module .
Functional Type:
signal-path
Firmkey A ccess:
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State
Preset State:
O
Softkey Descriptions 4-107