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A-3System 7SC • Reference Material
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