Extron electronic manual Audio input, Audio output, DTP HDMI 301 Reference Information

Audio input

Number/signal type	1 PC level stereo, unbalanced
Connectors	(1) 3.5 mm stereo jack, 2 channel; tip (L), ring (R), sleeve (ground)
Impedance	>10k ohms, DC coupled
Nominal level	-10 dBV (316 mVrms)
Maximum level	+7 dBV (unbalanced)

NOTE: 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu

Audio output

Number/signal type	1 stereo (2 channel), balanced/unbalanced
Connectors	(1) 3.5 mm captive screw connector, 5 pole
Impedance	50 ohms unbalanced, 100 ohms balanced
Gain error	±0.1 dB channel to channel
Maximum level (600 ohm)	>+15 dBu, balanced

Control/remote — external device (pass-through, unidirectional or bidirectional)

Serial control port input/output

Transmitter	RS-232 via (1) 3.5 mm, 5 pole captive screw connector for RS-232 control (±5 V)
	(connector is shared with IR control port)
Receiver	1 set of proprietary signals on a female RJ-45 jack
Serial control port output/input
Transmitter	1 set of proprietary signals on a female RJ-45 jack
Receiver	RS-232 via a 3.5 mm, 3 pole captive screw connector
Baud rates	Up to 115200 baud
Protocol	Data bits = 5 - 8
	Stop bits = 1 or 2
	Parity = odd, even, none
	Flow control = XON, XOFF, none
Serial control pin configuration	1 = Tx, 2 = Rx, 3 = GND
IR control port	(1) 3.5 mm, captive screw connector, 5 pole (connector is shared with RS-232
	control port)
	TTL level (0 to 5 V) modulated infrared control from 30 kHz up to 60 kHz
IR control pin configuration	3 = GND, 4 = IR Tx, 5 = IR Rx

DTP HDMI 301 • Reference Information 13