272 Chapter4
Key Function Descriptions
Key Descriptions
RECALL TO TR A Displays a menu of eight registers from which trace
data can be recalled and placed in trace A. The
recall-trace registers appear on two menus: TRACE 0
through TRACE 4 on the first page, and TRACE 5
through TRACE 7 on the second page. To recall trace
data from a desired register into trace A, press the
softkey next to the register number, or enter the
number using the data keys. Terminate the entry with
any units key (
Hz, kHz, and so on). If a recall-trace
register does not contain previously-saved trace data,
the NOT SAVED! message appears.
Front-panel key access:
RECALL
RECALL TO TR B Displays a menu of eight registers from which trace
data can be recalled and placed in trace B. The
recall-trace registers appear on two menus: TRACE 0
through TRACE 4 on the first page, and TRACE 5
through TRACE 7 on the second page. To recall trace
data from a desired register into trace B, press the
softkey next to the register number, or enter the
number using the data keys. Terminate the entry with
any units key (
Hz, kHz, and so on). If a recall-trace
register does not contain previously-saved trace data,
the NOT SAVED! message appears.
Front-panel key access:
RECALL
REF LVL Activates the reference-level function. The reference
level can be adjusted using the data keys, the step keys,
or the knob. The reference level is the top line of the
graticule. For best measurement accuracy, place the
peak of the signal of interest on the reference-level line.
The spectrum analyzer input attenuator is coupled to
the reference level and is automatically adjusted to
avoid compression of the input signal.
The minimum reference level, with 0 dB of attenuation,
is −120 dBm when using a logarithmic scale. It is 2.2
µV with the linear scale.
Front-panel key access:
AMPLITUDE
REF LVL ADJ Allows the analyzer internal gain to be adjusted so that
when the calibrator signal is connected to the input, a
reference level equal to the calibrator amplitude
displays the signal at top-screen. When REF LVL ADJ
is pressed, the STORE REF LVL softkey appears in its
place and a number without units appears in the active
function area. The reference-level value can be changed
by using the data keys, the step keys, or the knob.
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