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SWR-584C Instruction Manual
As you enter Advanced mode, keep in mind that all of the same operating limitations and
precautions that applied in Basic Menu also apply here.
5.2 Enter Advanced Mode: The Advanced Menu works the same as the Basic Menu, with
five functions arranged in sequence. To enter Advanced Mode, simultaneously press and
hold down Mode and Gate together until the Advanced screen appears -- then release.
Advanced Menu functions appear in the following order:
1. Impedance Magnitude (Z, )
2. Return Loss (RL) and Reflection Coefficient (ρ)
3. Distance To Fault (DTF)
4. Resonance (X=0)
5. Match Efficiency (η)
5.3 Measure Impedance Magnitude: Releasing Mode and Gate bypasses the Impedance
Magnitude identifier screen and displays the working screen by default (same as SWR R&X in
the Basic Menu). If the Antenna jack is open, the display will show a high-impedance "out-of-
range" message. If a measurable load is connected to the Antenna jack, the normal Z-Mag
data screen appears (see below):
Advanced Identifier
Advanced
The maximum impedance limit is set at 650 Ohms, as indicated by the error message. The
analog meters also function in this mode, showing both SWR and Impedance Magnitude:
1
To access the other Advanced menu selections, simply step or scroll past the Z-Mag function
using the Mode switch. On subsequent rotations through the menu, the Impedance Magnitude
introductory screen will appear in sequence with the others:
5.4 Return Loss and Reflection Coefficient: Return Loss (RL) measures how many dB
down the reflected wave is when referenced to the forward wave at 0-dB. A high Return Loss
(say -25 dB) equates to low SWR because the amount of reflected power in the system is
Z-Mag default, no load
10.140 MHz
R(Z>650)
3
1.5
2.0
2.5
1.2
SWR
Z = Mag,
Z-Mag default, measurable load
>25
SWR
40 50 70 100 400
0 10 20
Ohms
Impedance
= Phase
HF/VHF/220MHz SWR Analyzer
10.120 MHz
1.5
Z= 75
= 5° SWR
14
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