For those operators who are familiar with the 8754A, the Quick Reference Guide
on
44
and 45 may be
sufficient.
Model
8754A
Frequency
------.~
1
dB
dBm
deg
FRONT PANEL INTRODUCTION
A = power level
at
A
input
(dBm)
B
= power level
at
B
input
(dBm)
R
= power level
at
R
input
(dBm)
(R
is
selected when Channels I and 2 are
both
off.)
A/R
= power ratio between A and R inputs (dB)
B/R
= power ratio between
Band
R inputs (dB)
PHASE
B/R
= phase difference between
Band
R inputs
(degrees)
A/R
= reflected/incident = return loss (dB)
or
re-
flection coefficient
= SII
B/R
= transmitted/incident = gain/loss =
S21
10
Rectangular Measurements:
Front
Panel Introduction
Select Measurement
Set CRT Display
Set Frequency Sweep
Set Signal Levels
Measurement Calibration
Electrical Length Compensation
Read Measurement Value
For
more detailed operating instructions, the following paragraphs are supplied. They provide instructions
for the following operations which are common
to
all measurements.
For
example, when the
8754A
is
used with
the
8502A
or
8748A
test sets,
the
R
input
is
the
incident signal, the A
input
is
the reflected signal, and
the
B
input
is
the
transmitted signal.
Select
Measu
rement
Polar
A/R
displays
the
complex coefficient consisting
of
the
magnitude ratio and the phase angle between
the
A and R in-
puts. Polar Full scale is selected by changing the Channel I
Reference value; polar phase
rotation
is
selected
by
changing
the Channel 2 Reference value.
These
buttons
select the measurement displayed
on
the CRT.
Two independent channels are provided for rectangular measure-
ments
(vs.
frequency). POLAR
A/R
mode overrides the
other
selections and provides an 'X-Y display
of
magnitude and phase.
Rectangular scale/division
is
set independently for each mea-
surement channel.
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