User`s guide

SWEEP
DELAY
SWEEP
RAMP
SWEEP
TIME DAC
SWP CPLG
SR SA
SWP TIME
AUTO MAN
SYNC CRD
TV TRIG
Option 105 only. Q&ion 101 is recommended.
delays the start of sweep with respect to the gate trigger edge in the time
domain window of the gate utility. The time segment being displayed can be
shifted up to 65 msec after the gate trigger edge in 1 psec increments.
Front-Panel Key Access: cm]
displays the RAMP signal from the sweep-ramp generator that is located on the
A7 Analog Interface assembly. This is a service diagnostic function and is for
service use only.
Front-Panel Key Access: (CAL)
displays the output of the sweep-time DAC (SWP-DAC) from the sweep-ramp
generator that is on the A7 Analog Interface assembly. This is a service
diagnostic function and is for service use only.
Front-Panel Key Access: (CAL)
Q&ion 010 or 011 only.
selects stimulus-response (SR) or spectrum-analyzer (SA) auto-coupled sweep
time. In stimulus-response mode, auto-coupled sweep times are usually much
faster for swept-response measurements. Stimulus-response auto-coupled
sweep times are typically valid in stimulus-response measurements when the
system’s frequency span is less than 20 times the bandwidth of the device
under test.
Front-Panel Key Access: (jj)
selects the length of time in which the spectrum analyzer sweeps the displayed
frequency span. In all non-zero frequency spans, the sweep time varies from
20 milliseconds to 100 seconds. In zero frequency span, the fastest sweep
time is 15 milliseconds. Reducing the sweep time increases the rate of sweeps.
The sweep time can be changed using the step keys, the knob, or the numeric
keypad.
Fbr Option 101 only: Option 101 provides sweep times from 20 ,US to 20 ms in
zero span.
Front-Panel Key Access: [AUTO COUPLE) or [SWEEP]
Options 101 and 102, or Option 301 only.
provides sweep triggering on the selected line of a video picture field and
accesses the softkey menu used to select the line number of the video picture
field and the type of video picture frame.
When SYNC CRD TV TRIG is pressed, the trigger mode is changed to TV
trigger, TV LINE # becomes the active function, and the softkey menu for
changing the TV line numbers and video field trigger is accessed.
If the spectrum analyzer is in non-zero span, the resolution bandwidth is
changed to 1 MHz, the frequency span is set to 0 Hz, the detector mode is
changed to sample, the sweep time is changed to 100 ps, the amplitude scale is
changed to linear, a sweep is taken, and a marker is placed on the signal peak.
Front-Panel Key Access: (TRIG)
Key Descriptions 7-83