Audio input

Number/signal type	8 or 12	(depending on the model) stereo, unbalanced
Connectors	8 or 12	(depending on the model) 3.5 mm female stereo mini jacks; tip (L),
	ring (R), sleeve (Gnd)
Impedance	>10k ohms unbalanced, DC coupled
Nominal level	-10 dBV (316 mV)
Maximum level	+14 dBV, (unbalanced) at 1% THD+N

N0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu

Number/signal type	2 stereo, balanced/unbalanced: 1 fixed and 1 variable
Connectors	(2) 3.5 mm captive screw connectors, 5 pole
Impedance	50 ohms unbalanced, 100 ohms balanced
Nominal level	+4 dBu (1.23 Vrms), balanced
	-10 dBV (316 mVrms), unbalanced
Variable output’s volume range..	0 to 100 (-84 dB to 0 dB), default = 100 = 0 dB
Gain error	±0.1 dB channel to channel
Maximum level (Hi-Z)	+28 dBu, balanced; +20 dBV, unbalanced at 1%THD+N
Maximum level (600 ohm)	+21 dBm, balanced; +18 dBm, unbalanced at 1%THD+N

Serial control port	RS-232, 9-pin female D connector
Baud rate and protocol	9600 baud, 8 data bits, 1 stop bit, no parity
Serial control pin configurations.	2 = TX, 3 = RX, 5 = GND
“Show Me” contact closure	Pin 5 of each VGA input connector. The input is active (selected) when pin 5
	momentarily goes to ground.
Program control	Extron’s Universal Switcher control/configuration program for Windows®
	Extron’s Simple Instruction Set (SIS™)

Power	100 VAC to 240 VAC, 50/60 Hz, 10 watts, internal
Temperature/humidity	Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing
	Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
Cooling	Convection, no vents
Mounting
Rack mount	Yes, with optional 1U, 9.5” deep rack shelf (RSU 129, #60-190-01;
	RSB 129, #60-604-01)
Furniture mount	Yes, with optional under-desk mounting kit, part #70-077-01 (MBU 125), or
	through-desk mounting kit, part #70-077-02 (MBD 129)
Enclosure type	Metal
Enclosure dimensions	1.75” H x 17.5” W x 9.5” D (1U high, full rack wide)
	(4.4 cm H x 44.4 cm W x 24.1 cm D)
	(Depth excludes connectors.)
Product weight	6.3 lbs (2.9 kg)
Shipping weight	11 lbs (5 kg)
Vibration	ISTA 1A in carton (International Safe Transit Association)
Regulatory compliance
Safety	CE, CUL, UL, C-tick
EMI/EMC	CE, C-tick, FCC Class A, VCCI, ICES
MTBF	30,000 hours
Warranty	3 years parts and labor

A-3