HP 5355A Operating And Service Manual page 25

Model 5355A
Operation and Programming
MEASUREMENT KEYS
DIGITS
STtP
FRr;0
f>N/ON
When key is pressed and illuminated, enters the
manual center frequency shown on the counters
display (controlled by u
QFFSei
When
MAN
fneo
pressed again and extinguished,
and
liJANUAk
pressed, counter displays mea¬
surement, The DIGIT STEPS (blue-label) func¬
tion is in effect when OFFSET FREQ key (blue)
is illuminated. Each time the DIGIT STEPS key is
pressed, the display is expanded by twodigits until
10 decimal places are displayed (depending upon
resolution).
When pressed and illuminated, this key enters the
offset frequency (controlled by the UP or DN key)
on the counters display and activates all key
functions labeled in blue. The OFFSET FREQ key
function is in LOCAL control unless the REMOTE
□
QFFSET
pressed again and extinguished, and
pressed, counter displays the measurement.
Successive presses will result in alternate display of
measured and offset frequencies. The offset fre¬
quency is positive unless the minus (-) sign is
SELECT
displayed (contro
CHANGE
SIGN
lied by the
key).
When key is pressed and illuminated, a manual
frequency measurement is displayed, provided a
manual center frequency, within 50 MHz of the
input signal has been entered via the
function (DATA ENTRY).
When either DATA ENTRY key is in effect (illumi¬
nated) the UP function will cause the display to
count up while the UP key is held in. If both the
MANUAL and OFFSET keys are pressed simul¬
taneously, the display will reset.
When key is pressed and Illuminated, a resultant
frequency (sum or difference of input signal and
offset frequency) is displayed, provided an offset
frequency has been entered via the
When either DATA ENTRY key is in effect (illumi¬
nated) the DN function will cause the display to
count down while the DN key is held in.
NOTE
If both
MANUAL
keys are pressed
simultaneously, the display will reset.
Figure 3-1. Front Panel Controls, Connectors and Indicators (Continued)
3-3