HP 8590 E-Series User Manual page 284

activates the trigger condition that allows the next sweep to start if the
VIDEO
detected RF envelope voltage rises to a level set by the display line. When
VIDEO is pressed, the display line appears on the screen. For example, connect
the CAL OUT signal to the spectrum analyzer input, change the trigger mode
to video, and lower the display line. The spectrum analyzer triggers when the
display line reaches the noise floor.
Front-Panel Key Access: ITRIG)
holds and displays the amplitude data that is in the trace A register. The
VIEW A
trace A register is not updated as the spectrum analyzer sweeps. If trace A is
deactivated by pressing STORE BLANK A , the stored data can be retrieved by
pressing VIEW A .
Front-Panel Key Access: c-1
holds and displays the amplitude data that is in the trace B register. The
VIEW B
trace B register is not updated as the spectrum analyzer sweeps. If trace B is
deactivated by pressing STORE BLANK B , the stored data can be retrieved by
pressing VIEW B .
Front-Panel Key Access: Lmj
holds and displays the amplitude data that is in the trace C register. The
VIEW C
trace C register is not updated as the spectrum analyzer sweeps. If trace C is
deactivated by pressing STORE 3LANK C , the stored data can be retrieved by
pressing VIEW C .
Front-Panel Key Access: CTRACE)
changes the amplitude units to volts.
Front-Panel Key Access: (AMPLITUDE)
changes the amplitude units to W for
W
Front-Panel Key Access: (-1
changes the amplitude units to watts.
Watts
Front-Panel Key Access: (-1
HP 8591 E, HP 8593E, HP 8594E, HP 8595E, or HP 8596E only.
WINDOWS
turns off the windows display mode and returns to the normal full-sized
OFF
instrument display. The state of the last active window will become the
instrument state when the windows display is turned off.
Front-Panel Key Access: WINDOWS ION)
displays the output of the YTO extra-fine-tune DAC (FM-TUNE) that is on the
X FINE
A7 Analog Interface assembly. This is a service diagnostic function and is for
TUNE DAC
service use only.
Front-Panel Key Access: ICAL)
HP 8592L, HP 8593E, HP 85953, or HP 8596E only.
YTF
displays the output of the sample-and-hold circuit in the YTF span divider and
DRIVER
driver located on the A7 Analog Interface assembly. This is a service diagnostic
function and is for service use only.
Front-Panel Key Access: @
the current setting (log or linear).
Key Descriptions 7-91