D Spot Measurement; D Plot Measurement - Icom IC-7000 Instruction Manual

■ Measuring SWR
The IC-7000 has a built-in circuit for measuring an-
tenna SWR—no external equipment or special adjust-
ments are necessary.
The IC-7000 can measure SWR in 2 ways—spot mea-
surement and plot measurement.

D Spot measurement

q Select CW or RTTY operation with [MODE].
w Confirm that the output power is over 30 W.
e Select S S - - 1 1 .
r Push [F-3 M M E E T T ] one or more times to select the
SWR meter.
t Key down or push [PTT] to transmit; then read the
actual SWR from the meter.
➠ ≤ 1.5 well matched antenna
➠ > 1.5 check antenna or cable connection, etc.
-
SWR 1 1.5 2
The best match is in this range.

D Plot measurement

Plot measurement allows you to measure the SWR
over an entire band.
q Confirm that the output power is over 30 W.
w Set the center frequency for the SWR to be mea-
sured.
e Select G G - - 3 3 (SWR meter).
r Push and hold [F-4
S S T T E E P P
times to select the desired measuring step from 10,
50, 100 and 500 kHz.
t Push [F-2] or [F-3] one or more times to select the
desired number of measuring steps from 3, 5, 7, 9,
11, and 13 steps.
y Push [F-1] to start the measuring.
u Push and hold [PTT] on the microphone to mea-
sure the SWR.
• Frequency marker, "∫," appears below SWR graph.
• RTTY mode is automatically selected.
i When releasing [PTT], the frequency marker and
frequency indication move to the next frequency to
be measured.
o Repeat steps u and i to measure SWR over the
entire frequency range.
!0 When the measured SWR is less than 1.5:1, the
antenna is well matched with the transceiver in the
measured frequency range.
∞
3
] for 1 sec. one or more
FUNCTIONS FOR TRANSMIT
Menu selection (Example: S-1)
• Push [MENU/GRP] for 1 sec. once or twice to select
the menu group S S . Selection from: M M , S S or G G (Graphic)
• Push [MENU/GRP] momentarily one or more times to
select the menu S S - - 1 1 . Selection from: S S - - 1 1 , S S - - 2 2 or S S - - 3 3
[MENU/GRP] [F-3]
Push [F-1] to start
mesuring.
Push [F-2] or [F-3] to select number of
SWR mesuring steps.
• Measuring (after pushing [F1])
Frequency marker appears and moves
after measurement.
The antenna is well matched in this range
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Push [F-4] to Select
SWR mesuring steps.
4.0 : 1
3.0 : 1
2.0 : 1
1.5 : 1
1.0 : 1
92
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