Icom HF/VHF/UHF ALL MODE TRANSCEIVER ACC Socket, When connecting the ACC conversion cable OPC-599

PANEL DESCRIPTION 1

!3BEEP/SIDETONE CONTROL [BEEP/SIDETONE] Adjusts the beep tone and CW side tone audio lev- els.

TECHNICAL INFORMATION

• ACC SOCKET

	ACC			PIN #	NAME	DESCRIPTION	SPECIFICATIONS			COLOR
				1	8 V	Regulated 8 V output.	Output voltage		: 8 V ±0.3 V	brown
							Output current		: Less than 10 mA
				2	GND	Connects to ground.				red
						Input/output pin (HF/50 MHz).	Ground level		: –0.5 V to 0.8 V
						Goes to ground when transmitting.
				3	HSEND		Input current		: Less than 20 mA	orange
						When grounded, transmits (connected to 8V
						line thru 2.2 kΩ resistance/144 MHz operation).	(HF/50 MHz bands)
				4	BDT	Data line for the optional AT-180.				yellow
				5	BAND	Band voltage output.	Output voltage		: 0 to 8.0 V	green
						(Varies with amateur band)
				6	ALC	ALC voltage input.	Control voltage		: –4 to 0 V	blue
							Input impedance		: More than 10 kΩ
	13
						Input/output pin (144 MHz).
9	10	11	12				Ground level		: –0.5 V to 0.8 V
5	6	7	8			Goes to ground when transmitting.
				7	VSEND		Input current		: Less than 20 mA	purple
1	2	3	4			When grounded, transmits (connected to 8V
						line thru 2.2 kΩ resistance/HF•50 MHz operation).	(144 MHz band)
Rear panel
				8	13.8 V	13.8 V output when power is ON.	Output current		: Max. 1 A	gray
	view
				9	TKEY	Key line for the AT-180.				white
				10	FSKK	RTTY keying input.	Ground level		: –0.5 to 0.8 V	black
						Connected in parallel to the [RTTY] jack.	Input current		: Less than 10 mA
							Input impedance		: 10 kΩ
				11	MOD	Modulator input.	Input level		: Approx. 100 mV	pink
							rms
				12	AF	AF detector output.	Output impedance		: 4.7 kΩ	light
						Fixed, regardless of [AF] position.	Output level		: 100 to 350 mV rms	blue
				13	SQLS	Squelch output.	SQL open	: Less than 0.3 V/5 mA		light
						Goes to ground when squelch opens.	SQL closed	: More than 6.0 V/100 µA		green

• When connecting the ACC conversion cable (OPC-599)

2	5	➀ FSKK	➄ AF
4		➁ GND	➅ SQLS
1	3
		➂ HSEND	➆ 13.8 V
8	7
6		➃ MOD	➇ ALC
13

Color refers to the cable strands of the supplied cable.

9	10	11	12	ACC 1
5	6	7	8
1	2	3	4			➀ 8 V	➄ ALC
				2	5
				4		➁ GND	➅ VSEND
				1	3
						➂ HSEND	➆ 13.8 V
				6	7
						➃ BAND

ACC 2

6