Icom IC-R8500 Connector Information, D RS-232C socket, D Remote jack, D IF OUT jack

9 CONNECTOR INFORMATION

DRS-232C socket

13 1

25 14

DRemote jack

Outer

Inner 3.5 mm (diam.) 2-conductor

DIF OUT jack

Inner

Outer

RCA (phono) jack

DAGC OUT jack

Inner

Outer

RCA (phono) jack

DExternal speaker

Outer

Inner 3.5 mm (diam.) 2-conductor

Pin	Port name	Description
1	GND	Grounded.
2	RXD	Input port for CI-V format data; +12V/–12V.
3	TXD	Output port for CI-V format data; +12V/–12V.
4	RTS	Shorten these ports inside.
		Can be connected to pin 8 (DCD) via the inter-
5	CTS
		nal circuit board (‘coffee beans’).
6	DSR	NC; can be connected to pin 20 (DTR) via the
		internal circuit board (‘coffee beans’).
7	GND	Grounded.
8	DCD	NC; can be connected to pins 4 and 5 (RTS/CTS)
		via the internal circuit board (‘coffee beans’).
9–19	NC	No connection.
20	DTR	NC; can be connected to pin 6 (DSR) via the
		internal circuit board (‘coffee beans’).
21–25	NC	No connection.

Pin	Port name	Description
Inner	REMOTE	Input/output port for CI-V format data; +5 V/0 V.
Outer	GND	Grounded.
Pin	Port name	Description
		Frequency: 10.7 MHz
Inner	IF OUT	Output level: –60 dBm (with –50 dBm input from
		an antenna connector in WFM mode)
Outer	GND	Grounded.
Pin	Port name	Description
		Output voltage: 1 to –2.4 V DC
	AGC out	(signal strength weak to strong)
		Output impedance: 2.2 MΩ
Inner*
		Output level: 200 mV rms (at Mod.=1 kHz, Dev.=3.5 kHz)
	Audio detect	Output impedance: 4.7 kΩ
		• Before the frequency de-emphasis stage.
		• Usable for FM only (not including WFM).
Outer	GND	Grounded.
*Output is selectable with an internal jumper pin (p. 16).
Pin	Port name	Description
Inner	AF out	Output level: More than 2 W
		Output impedance: 4–8 Ω
Outer	GND	Grounded.

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