| 经销商 | 联系方式 |
|---|---|
| 爱思创Extron电子 | 4000.398766、 021-3760 1568 |
Extron VersaTools MDA 包括11 款用于复合视频、S- 视频和音频信号的微型分配放大器，这系列分配放大器均采用坚固耐用的1/4 机架宽的金属机箱。这些MDA 都是高性能、结构紧凑、多用途的解决方案，很容易集成入会议室、培训设施、家庭影院、指挥与控制中心，以及租赁和舞台演出环境等新建的或已有的视听系统中
特性
·复合视频各型号具有435 些MHz（-3dB）的视频信号带宽
·S- 视频各型号具有270MHz（-3dB）的视频信号带宽
·MDA 5V 和MDA 5SV 带有贯通输出
·1/4 机架宽的金属机箱
·通过 BNC 输入/ 输出插座接收并分配复合视频信号
·用于平衡和非平衡音频信号的螺丝锁定器
·音频输出增益指拨开关维持均一增益
·视频带宽：435 MHz (-3dB)，满载
示意图
面板图
| VersaTools MDA Series | |||
| Video | |||
|---|---|---|---|
| Gain | Unity | ||
| Bandwidth | |||
| Composite video | 400 MHz (-3 dB) | ||
| S-video | 270 MHz (-3 dB) | ||
| Video input | |||
| Number/signal type | |||
| MDA 3SV/3SVA, MDA 5SV | 1 S-video | ||
| MDA 3SV Dual | 2 S-video | ||
| MDA 3V/3AV, MDA 5V | 1 composite video | ||
| MDA 3V Dual | 2 composite video | ||
| Connectors | |||
| MDA 3SV/3SVA, MDA 5SV | (1) 4-pin mini DIN female | ||
| MDA 3SV Dual | (2) 4-pin mini DIN female | ||
| MDA 3V/3AV, MDA 5V | 1 BNC female | ||
| MDA 3V Dual | 2 BNC female | ||
| Nominal level |
1 Vp-p for Y of S-video and for composite video 0.3 Vp-p for C of S-video |
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| Minimum/maximum levels | 0.4 V to 2.0 Vp-p for composite video or Y of S-video with no offset | ||
| Impedance | 75 ohms | ||
| Return loss | |||
| MDA 3SV/3SVA, MDA 5SV, MDA 3SV Dual | <-25 dB @ 0 to 10 MHz | ||
| All other models | <-27 dB @ 5 MHz | ||
| DC offset (max. allowable) | 5.0 V | ||
| Input coupling | AC | ||
| Video output | |||
| Number/signal type | |||
| MDA 3SV/3SVA | 3 buffered S-video | ||
| MDA 3SV Dual | 2 x 3 buffered S-video | ||
| MDA 5SV | 6 S-video: 5 buffered for distribution, 1 passive loop-through | ||
| MDA 3V/3AV | 3 buffered composite video | ||
| MDA 3V Dual | 2 x 3 buffered composite video | ||
| MDA 5V | 6 composite video: 5 buffered for distribution, 1 passive loop-through | ||
| Connectors | |||
| MDA 3SV/3SVA | (3) 4-pin mini DIN female | ||
| MDA 3SV Dual | (6) 4-pin mini DIN female | ||
| MDA 5SV | (6) 4-pin mini DIN female | ||
| MDA 3V/3AV | 3 BNC female | ||
| MDA 3V Dual | 6 BNC female | ||
| MDA 5V | 6 BNC female | ||
| Nominal level |
1 Vp-p for Y of S-video and for composite video 0.3 Vp-p for C of S-video |
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| Minimum/maximum levels | 0.4 V to 2.0 Vp-p, follows input | ||
| Impedance | 75 ohms | ||
| Return loss | <-30 dB @ 5 MHz | ||
| DC offset | ±50 mV with input at 0 offset | ||
| Sync | |||
| Standards | NTSC 3.58, NTSC 4.43, PAL, SECAM | ||
| Audio — MDA 3AV, MDA 3SVA, MDA 3A/3A RCA, MDA 5A RCA | |||
| Gain | |||
| DIP switch set to match output type | Unity (0 dB) | ||
| DIP switch not matched to output type |
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| Frequency response | 20 Hz to 20 kHz, ±0.05 dB | ||
| THD + Noise | 0.03% @ 1 kHz at nominal level | ||
| S/N | |||
| MDA 3A/5A RCA | >90 dB, unbalanced, at maximum output | ||
| All other models w/audio | >90 dB, balanced at maximum output | ||
| Stereo channel separation | >80 dB @ 1 kHz; >60 dB @ 20 kHz | ||
| CMRR | >75 dB @ 20 Hz to 20 kHz | ||
| Audio input — MDA 3AV, MDA 3SVA, MDA 3A/3A RCA, MDA 5A RCA | |||
| Number/signal type | |||
| MDA 3A RCA, MDA 5A RCA | 1 stereo unbalanced | ||
| MDA 3AV, MDA 3SVA, MDA 3A | 1 stereo balanced/unbalanced | ||
| Connectors | |||
| MDA 3A RCA, MDA 5A RCA | 2 RCA connectors | ||
| MDA 3AV, MDA 3SVA, MDA 3A | (1) 3.5 mm captive screw connector, 5 pole | ||
| Impedance | |||
| MDA 3A RCA, MDA 5A RCA | >10k ohms unbalanced, DC coupled | ||
| MDA 3AV, MDA 3SVA, MDA 3A | >50k ohms unbalanced, >25k ohms balanced, DC coupled | ||
| Nominal level | +4 dBu (1.23V), 0 dBu (0.775 V), -10 dBV (316 mV), -20 dBV (100 mV) compatible | ||
| Maximum level | |||
| MDA 3A/5A RCA | +17 dBu (unbalanced) at 1%THD+N | ||
| All other models w/audio | +24 dBu (balanced) at 1%THD+N | ||
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| Audio output — MDA 3AV, MDA 3SVA, MDA 3A/3A RCA, MDA 5A RCA | |||
| Number/signal type | |||
| MDA 5A RCA | 5 stereo, unbalanced | ||
| MDA 3A RCA | 3 stereo, unbalanced | ||
| MDA 3AV, MDA 3SVA, MDA 3A | 3 stereo, balanced/unbalanced | ||
| Connectors | |||
| MDA 5A RCA | 10 RCA connectors | ||
| MDA 3A RCA | 6 RCA connectors | ||
| MDA 3AV, MDA 3SVA, MDA 3A | (3) 3.5 mm captive screw connectors, 5 pole | ||
| Impedance | |||
| MDA 3A RCA, MDA 5A RCA | 50 ohms unbalanced | ||
| MDA 3AV, MDA 3SVA, MDA 3A | 50 ohms unbalanced, 100 ohms balanced | ||
| Gain error | ±0.1 dB channel to channel | ||
| Maximum level (Hi-Z) | |||
| MDA 3A/5A RCA | +15 dBV, unbalanced, at 1%THD+N | ||
| All other models w/audio | >+24 dBu, balanced at 1%THD+N | ||
| Maximum level (600 ohm) | |||
| MDA 3A/5A RCA | >+14 dBm, unbalanced, at 1%THD+N | ||
| All other models w/audio | >+15 dBm, balanced or unbalanced, at 1%THD+N | ||
| General | |||
| External power supply |
100 VAC to 240 VAC, 50/60 Hz, 5 watts, external, autoswitchable; to 12 VDC, 1 A (max.), regulated |
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| Power input requirements | |||
| MDA 3V/3SV/5V/5SV | 12 VDC, 0.1 A (max.) | ||
| MDA 3AV/3SVA | 12 VDC, 0.3 A (max.) | ||
| All other models | 12 VDC, 0.2 A (max.) | ||
| 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 |
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| Cooling | Convection, no vents | ||
| Rack mount |
Yes, with optional 1U, 9.5" deep rack shelf, part #60-190-01 (RSU 129) or 60-604-01 (RSB 129); 1U, 6" deep rack shelf, part #60-190-10 (RSU 126) or 60-604-10 (RSB 126); or VersaTools® 1U, 3.5" deep rack shelf, part #60-190-20 (RSF 123) or 60-604-20 (RSB 123) Furniture mountable with optional VersaTools mini under desk mount kit, part #70-212-01 (MBU 123) Attachable to a projector mount with optional projector mount kit, part #70-217-01 (PMK 100) |
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| Enclosure type | Metal | ||
| Enclosure dimensions |
1.7" H x 4.3" W x 3.0" D (1U high, quarter rack wide) (4.2 cm H x 11.0 cm W x 7.6 cm D) (Depth excludes connectors and knobs.) |
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| Product weight | |||
| MDA 3V, MDA 3SVA | 0.4 lbs (0.2 kg) | ||
| MDA 3V Dual | 0.7 lbs (0.3 kg) | ||
| MDA 3AV | 0.6 lbs (0.3 kg) | ||
| MDA 5V, MDA 5SV | 0.5 lbs (0.2 kg) | ||
| MDA 3SV | 0.4 lbs (0.2 kg) | ||
| MDA 3SV Dual, MDA 3A | 0.5 lbs (0.2 kg) | ||
| MDA 3A/5A RCA | 0.4 lbs (0.2 kg) | ||
| Shipping weight | |||
| MDA 3V, MDA 3V Dual | 3 lbs (2 kg) | ||
| MDA 3AV, MDA 5V | 3 lbs (2 kg) | ||
| MDA 3SV, MDA 3SV Dual .. 2 lbs (1 kg) | |||
| MDA 3SVA, MDA 5SV | 2 lbs (1 kg) | ||
| MDA 3A/5A RCA | 2 lbs (1 kg) | ||
| Vibration | ISTA 1A in carton (International Safe Transit Association) | ||
| Regulatory compliance | |||
| Safety | CE, C-tick, CUL, UL | ||
| EMI/EMC | CE, C-tick, FCC Class A, ICES, VCCI | ||
| MTBF | 30,000 hours | ||
| Warranty | 3 years parts and labor | ||
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