Extron electronic System 7SC manual Sync

Sync

Input type	RGBHV, RGBS, RGsB, RsGsBs
Output type	RGBHV, RGBS, RGsB, RsGsBs*
	(*RsGsBs will be output only if the input is RsGsBs.)
Standards	TTL (RGB)
	NTSC 3.58, NTSC 4.43, PAL and SECAM (S-video and composite video)
Input level	0.5 V to 5 Vp-p
Output level	0.5 V to 5 Vp-p, unterminated
Input impedance	510 ohms
Output impedance	75 ohms
Max input voltage	5 Vp-p
Max. propagation delay	20 ns
Polarity	Positive or negative (follows input)

Audio

Gain	+0 dBu unbalanced, +6 dBu balanced
Frequency response	20 Hz to 20 kHz, ±0.05 dB
THD + Noise	<0.03% @ 1 kHz at nominal level
S/N	>90 dB at rated maximum output (+21 dBu)
Crosstalk	<-80 dB @ 1 kHz, fully loaded
Stereo channel separation	>90 dB @ 1 kHz
CMRR	>75 dB @ 20 Hz to 20 kHz

Audio input

Number/signal type	6 stereo, balanced/unbalanced (rear panel)
	1 stereo, unbalanced (front panel)
Connectors	(6) 3.5 mm captive screw connectors, 5 pole, and
	(1) 3.5 mm mini stereo jack (unbalanced), or
	2 RCA female (white = L, red = R)
Impedance	>12.5k ohms balanced, 25k ohms unbalanced, DC coupled
Nominal level	-20 dBV (100 mV), -10 dBV (316 mV), 0 dBu (0.775 V), or +4 dBu (1.23 V),
	configurable

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

+4 dBu and 0 dBu are professional audio line level standards.

-10 dBV and -20 dBV are semiprofessional, computer audio, and consumer audio standards.

Maximum level	+19.5 dBu, (balanced or unbalanced) at 1%THD+N
Input gain adjustment	–15 dB to +9 dB, adjustable per input via RS-232 or front panel

Audio output

Number/signal type	2 line-level stereo, balanced/unbalanced
Connectors	(2) 3.5 mm captive screw connectors, 5 pole
Impedance	50 ohms unbalanced, 100 ohms balanced
Attenuation
Fixed output	0%
Variable output	0% to 100%
Maximum level (Hi-Z)	>+21 dBu, balanced or unbalanced at 1%THD+N
Maximum level (600 ohm)	>+15 dBm, balanced or unbalanced at 1%THD+N

System 7SC • Reference Material A-3