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Mode! 5355A
Operation and Programming
3-15.
Manual Mode
3-16.
The manual mode of operation is initiated by pressing the
I •
MAN
iRtO
key. To operate in
this mode, the input signal frequency must be known within 50 MHz and this manual frequency
must be entered into the display prior to the measurement. Use of the manual mode is described
in the following paragraph and an example is shown in Table 3-3.
^AN
3-17.
Pressing the
I
•
key results in a display of the low frequency listed below (or a
0
MAN
key indicator lights and the gold-labeled
key functions are in effect. Press and hold ther»l-''''^''*'key to cause the display to count up
0
Qffsei
key
to cause the display to count down to the low frequency in .1 GHz steps. These keys are used
to set the display to a frequency within .1 GHz of the input signal. Press and release the
WAN
f
«
fREQ
key to depart the DATA ENTRY function and press 1 •
to enter the MEASURE¬
MENT function. The following table lists the high and low frequency displayed for each mode of
the 5356 Frequency Converter Heads:
Head Installed
515b\ K
5 316R OpMoii (Jl)1
SJ56C
Opiit»n (Hll
OFFSET Mode
IJispktv.>«:
j
rri'qiu'n< v '.jH/.
D«s{>Uyed Low
I requonry (CHa)
I 5
1.5
17
3-19.
The OFFSET mode is used to add or subtract a constant to/from a measurement. For
example, a radio frequency can be measured by measuring the local oscillator frequency and
then adding the IF as a positive offset. Use of the OFFSET mode is described in the following
paragraph and an example is shown in Table 3-4.
3-20.
The OFFSET mode of operation is initiated by pressing the
[ • Herco
key, which results
Wb—i) lOCAL
in a display of -1 GHz (or a previously entered offset frequency). The
f • ]|
key indicator
^
VOCAL
lights and the blue-labeled key functions are in effect,
f, ij "anua!,
f • |
keys cause the
display to count up or down between 1. and 9. GHz to select the offset frequency. The display
can
be expanded and the resolution of the offset frequency increased by using the
MAN
9
l| £RKO
OiGI rs
STEP
key and
key functions. In addition,
!•
Jl (>.X I
key can be used for limited
3-6
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