Icom IC-7000 AT-180 internal switch description, AT-180 inside top cover, PIN no Description Name

16 OPTION UNITS SETTING

■AT-180 internal switch description

The optional AT-180 has 3 operating conditions for HF band operation. Select a suitable condition according to your antenna system.

q Remove the top cover of the AT-180.

w Set the tuner switches to the desired positions ac- cording to the table below.

•AT-180 inside top cover

SW Position Operation

AThe tuner operating condition is set by S2 (default) described below.

		THROUGH INHIBIT
		The tuner tunes the antenna even when the
S1		antenna has poor SWR (up to VSWR 3:1
		after tuning). In this case, manual tuning is
	B	necessary each time you change the fre-
		quency although the tuner automatically
		starts tuning when the VSWR is higher than
		3:1. This setting is called “through inhibit,”
		however, the tuner is set to “through” if the
		VSWR is higher than 3:1 after tuning.
		TUNER SENSITIVE CONDITION
		The tuner tunes each time you transmit (ex-
	C	cept SSB mode). Therefore, the lowest
		SWR is obtained at any given time.
S2		For SSB mode, the same condition as the
		“D” position.

NORMAL CONDITION

DThe tuner tunes when the SWR is higher (default) than 1.5:1. Therefore, the tuner activates

only when tuning is necessary.

S2 S1

DCBA

•Specifications for the AT-180

•Frequency coverage : 1.9–54 MHz

•Input impedance	: 50 Ÿ
•Maximum input	: 120 W
power
•Minimum tuning	: 8 W
power
•Matching impedance : 16.7–150 Ÿ (HF band)
range	20–125 Ÿ (50 MHz band)
•Tuning accuracy	: Less than SWR 1.5:1
•Insertion loss	: Less than 1.0 dB
	(after tuning)
•Power supply	: 13.8 V DC/1 A (supplied from
requirements	the transceiver’s ACC socket)
•Dimensions (mm/in)	: 167(W) ⋅ 58.6(H) ⋅ 225(D)
	69⁄16(W) ⋅ 25⁄17(H) ⋅ 87⁄8(D)
•Weight	: 2.4 kg; 5 lb 4 oz

•Supplied accessories : coaxial cable (1 m), ACC cable (DIN 13 pins)

•Connector information for ACC(2) socket

4	2	5
1		3 ACC 2
6		7

PIN NO./	DESCRIPTION
NAME
q 8 V	Regulated 8 V output.
	(10 mA max.)
w GND	Connects to ground.
	Input/output pin.
e SEND	Goes to ground when transmitting (20 mA
	max). When grounded, transmits.
r BAND	Band voltage output.
	(Varies with amateur band; 0 to 8.0 V).
t ALC	ALC output voltage (–4 to 0 V).
y NC	No connection.
u 13.8V	13.8 V output when power is ON (1 A max).

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