Agilent Technologies 8590 Series Service Manual page 598

Softkey Descriptions
Softkey Descriptions
FRQ DISC NORM OFF Frequency
Discriminator Normal/Off
D Indicates the status of the frequency discriminator as a
ESCRIPTION
function of LO span.
• In LO spans less than or equal to 10 MHz, NORM
should be underlined, indicating the discriminator is
in use.
• In LO spans greater than 10 MHz, OFF should be
underlined, indicating the discriminator is not in
use.
GND REF DETECTOR Ground-Reference
Detector
D Displays the output of the analog-ground reference
ESCRIPTION
produced on the A16 processor/video assembly. A
horizontal line at the bottom graticule line indicates
that the ADC is adjusted correctly. The ground
reference is produced on the A16 processor/video
assembly.
The
CAL AMPTD
analog-ground reference to calibrate the bottom-screen
level of the main ADC on the A16 processor/video
assembly.
Note that during
signal are used to calibrate the main ADC. The analog
ground and 2 V reference at the input MUX are used
during calibration. If the signals are out of range, the
ADC-GND FAIL or ADC-2V FAIL error messages are
displayed.
R S
ELATED OFTKEYS
IDNUM Identification Number
D Note that this function applies only to the 8595E and
ESCRIPTION
8596E spectrum analyzers. All other analyzers are
identified through hardware during analyzer
initialization or other means. Refer to
598
self-calibration routine uses the
PRESET
CAL AMPTD
the analog-ground and +2 V
Chapter 3
Chapter 13
for