Extron System 7SC是一款带内置视频图象解析度转换器的7路输入双输出多格式有源切换器。System 7SC具有投影机和房间控制功能，此外还有RGB和视频整合能力，非常适合于使用等离子显示器及CRT、LCD、D-ILA™/LcoS和DLP投影机的永久性设施和舞台应用。
特性
·BNC插头上6路完全可配置的输入加15针HD插头上的第7路可配置输入
·通过1个15针HD插头和5个BNC插头的同时图象解析度转换输出
·利用红外线学习功能和专用RS-232投影机控制端口实现通用投影机控制
·RGB延迟切换(Triple-Action Switching™)在切换过程中将屏幕消象，以消除可见的切换瞬态
·为每路输入提供平衡/非平衡音频与增益/衰减调节
·固定电平与可变电平输出
·数字四线自适应梳状滤波器解码NTSC 3.58、NTSC 4.43、PAL和SECAM信号
·精确场频锁定(Accu-RATE Frame LockAFL™)技术解决了图象解析度转换器存在的帧频转换问题
·动态运动内插(Dynamic Motion Interpolation-DMI™）技术的运用带来了最佳的图象宽高比和运动算法
·具有3:2（NTSC）和2:2（PAL）下拉检测功能，可使来自胶片的NTSC或PAL源信号的图象细节和解析度达到最大控
示意图
面板图
| System 7SC Switcher | |||
| Video | |||
|---|---|---|---|
| Gain | Unity | ||
| Bandwidth | 350 MHz (-3 dB) | ||
| Differential phase error | 0.01°, at 3.58 MHz and 4.43 MHz | ||
| Differential gain error | 0.01% at 3.58 MHz and 4.43 MHz | ||
| Crosstalk | -50 dB @ 5 MHz | ||
| Video input | |||
| Number/signal type | 6 RGBHV / RGBS / RGsB / RsGsBs computer video, component video (interlaced or progressive, 480p only), S-video, or composite video 1 RGBHV / RGBS / RGsB / RsGsBs computer video, S-video, or composite video |
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| Connectors | 6 x 5 BNC female RGB computer video, component video, S-video, or composite video (1)15-pin HD female RGB computer video (input 7) (1)4-pin mini-DIN female S-video (input 7) 1 RCA female composite video (input 7) |
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| Nominal level | 1 Vp-p for Y of component video and S-video, and for composite video 0.7 Vp-p for RGB 0.3 Vp-p for R-Y and B-Y of component video, and for C of S-video |
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| Minimum/maximum levels | Analog: 0.3 V to 2 Vp-p with no offset | ||
| Impedance | 75 ohms | ||
| Horizontal frequency | 15 kHz to 150 kHz | ||
| Vertical frequency | 30 Hz to 150 Hz | ||
| Return loss | <-30 dB @ 5 MHz | ||
| DC offset (max. allowable) | 1.5 V | ||
| Video processing | |||
| Decoder | 9 bit digital | ||
| Digital sampling | 24 bit, 8 bits per color; 13.5 MHz (interlaced signals) 24 bit, 8 bits per color; 27 MHz (480p signals) |
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| Colors | 16.78 million | ||
| Video output | |||
| Number/signal type | 2 RGBHV / RGBS / RGsB / RsGsBs* computer video (*RGsB, and RsGsBs will be output only if the input is RsGsBs.) |
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| Connectors | 1 x 5 BNC female (1) 15-pin HD female |
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| Nominal level | 0.7 Vp-p for RGB | ||
| Minimum/maximum levels | 0.0 V to 1.4 Vp-p | ||
| Impedance | 75 ohms | ||
| Scaled VGA resolution | 640x4801,3,4,5, 800x6001,3,4,5, 832x6243,4,5, 848x4803, 852x4803, 1024x7681,3,4,5, 1280x7682, 1280x10241,3,5, 1360x7653, 1365x10243,5, 480p3,5, 720p3,5, 1080p3,5, 1080i3,5 1= at 50 Hz, 2= at 56 Hz, 3= at 60 Hz, 4= at 75 Hz, 5= locked to the current input's vertical refresh rate |
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| Return loss | -30 dB @ 5 MHz | ||
| DC offset | ±5 mV maximum with input at 0 offset | ||
| Switching type | Triple-Action | ||
| Sync | |||
| Input type | RGBHV, RGBS, RGsB, RsGsBs | ||
| Output type | RGBHV, RGBS, RGsB, RsGsBs* (*RsGsBs is output only if the input is RsGsBs.) |
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| Standards | TTL (RGB) NTSC 3.58, NTSC 4.43, PAL and SECAM (S-video and composite video) |
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| 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) |
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| 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) |
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| 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 | ||
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| 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 | ||
| Control/remote — switcher | |||
| Serial control port | RS-232, 9-pin female D connector, dual port | ||
| Baud rate and protocol | 9600, 8-bit, 1 stop bit, no parity | ||
| Serial control pin configurations | 2 = TX, 3 = RX, 5 = GND | ||
| Contact closure | (1) 3.5 mm, 10-pole captive screw connector | ||
| Contact closure pin configurations | |||
| 1 = input 1; 2 = input 2; 3 = input 3;... ; 7 = input 7; 8, 9, 10 = GND | |||
| IR controller module | IR 701: 30 kHz to 60 kHz input frequency compatibility | ||
| Program control | Extron's control/configuration program for Windows® Extron's Simple Instruction Set (SIS™) |
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| Control — room relay | |||
| Number/type | 2 momentary or latching | ||
| Connectors | (2) 3.5 mm captive screw connectors, 5 pole | ||
| Contact rating | 24 V, 1 A | ||
| Control — projector | |||
| Projector control port | RS-232: (1) 3.5 mm captive screw connector, 10 pole IR: (1) 3.5 mm captive screw connector, 5 pole |
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| General | |||
| Power | 100 VAC to 240 VAC, 50/60 Hz, 30 watts, internal | ||
| Temperature/humidity | Storage -40° to +158°F (-40° to +70°C) / 10% to 90%, noncondensing Operating +32° to +104°F (0° to +40°C) / 10% to 90%, noncondensing |
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| Rack mount | Yes, with included brackets | ||
| Enclosure type | Metal | ||
| Enclosure dimensions | 3.5" H x 17.5" W x 9.5" D (2U high, full rack wide) (8.9 cm H x 44.4 cm W x 24.1 cm D) (Depth excludes connectors and knobs. Width excludes optional brackets.) |
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| Product weight | 8.5 lbs (3.9 kg) | ||
| Shipping weight | 18 lbs (9 kg) | ||
| Vibration | ISTA 1A in carton (International Safe Transit Association) | ||
| Listings | UL, CUL | ||
| Compliances | CE, FCC Class A | ||
| MTBF | 30,000 hours | ||
| Warranty | 3 years parts and labor | ||
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