SWR-584C Instruction Manual
HF/VHF/220MHz SWR Analyzer
8
with all harmonics suppressed below -25 dBc. Although not phase-locked, stability is adequate
for most general alignment applications. To protect the bridge diodes from accidental DC
voltage applications, we strongly recommend installing an in-line attenuator or coupling
capacitor to provide isolation.
4.0 Basic Measurement Modes
4.1 The Basic Operating Menu:
The SWR-584C
Basic Menu
presents the analyzer's most
frequently used measurement functions. Tap the
Mode
switch to step through each one -- or
hold it down to scroll through them at a 3-second-per-screen rate. Selections are:
1. R&X:
Measures
SWR, R
(
Resistance
),
X
(
Reactance
)
, Z
(
Z-magnitude
), and
(
Phase
)
.
2. Coax Loss (dB):
Measures loss at any given frequency for 50-Ohm coax or a DUT.
3. Capacitance (pF):
Measures component's reactance, computes capacitance.
4. Inductance (uH):
Measures component's reactance, computes inductance.
5. Frequency (MHz)
: Counter mode, measures frequency of an external RF source
Each menu selection opens with an
Identifier Screen*.
After a brief pause, a
Working Screen
appears to present data. The menu is circular, reverting back to the beginning.
*On analyzer boot-up, the
R&X
Working Screen
appears without its identifier screen. However,
the
Identifier Screen
will appear when stepping or scrolling through the menu:
4.2 Measuring SWR, R, X, Z, and :
This default function measures and displays five of the
most widely used network parameters simultaneously. To access and view measured data for
SWR
,
R, X, Z, and
, follow the checklist below:
[ ] Turn on the analyzer and allow it to boot to the default mode (
R&X
).
[ ] Adjust the
Frequency
switches and
Tune
control to the desired test frequency (
MHz
).
[ ] Connect the feedine (or load) to the analyzer's
Antenna
jack.
[ ] Read numerical
Standing Wave Ratio
(
SWR
) in the upper right-hand corner of the display:
[ ] Also, read
SWR
on the analog panel meter display:
SWR
3
2.5
2.0
1.5
1.2
1
[ ] Read
Complex Impedance
(
R
and
X
) on the bottom line of the display:
10.120 MHz 1.5
R= 73 X=5 SWR
Impedance
R & X
