Extron BBG 6 A 提供6 个广播级NTSC 或PAL 黑脉冲输出信号，允许各种视频设备同步锁定于共同的基准信号.
该同步信号由三个基准信号分量构成： 纵向同步、水平同步及色同步信号。 首两个输出可提供广播级NTSC SMPTE 彩条或者PAL 满场彩条测试图形。 另外，BBG 6 A 还带一个1kHz音频发生器；该音频发生器由螺丝锁定器输出平衡或非平衡的音频信号。
特性
·广播级同步基准信号
·广播级NTSC SMPTE 彩条和PAL 满场8 色彩条
·内置音频发生器(1kHz 音频)
·可选 +4 dBu 或 -10 dBV 音频输出
·NTSC/PAL 可切换
·电源 LED 指示易于进行故障排除
·1U 高 1/4 机架宽金属外壳
·可安装在机架、桌下和投影机上
·提供外置型国际通用电源，产品编号为 # 70-055-01
示意图
面板图
| BBG 6 A Series Black Burst Generators | |||
| Blackburst output | |||
|---|---|---|---|
| Number/signal type | 6 blackburst (two can be switched to color bars) | ||
| Connectors | 6 BNC female | ||
| Standards | |||
| BBG 6 A | RS-170A standard for NTSC 3.58, CCIR 624-4 standard for PAL | ||
| BBG 6 A J | RS-170A standard for NTSC 3.58 | ||
| Impedance | 75 ohms | ||
| Sync level | |||
| BBG 6 A | 40 IRE for NTSC, 43 IRE for PAL | ||
| BBG 6 A J | 40 IRE for NTSC | ||
| Color burst level | |||
| BBG 6 A | 40 IRE for NTSC, 43 IRE for PAL | ||
| BBG 6 A J | 40 IRE for NTSC | ||
| Setup level | |||
| BBG 6 A | 7.5 IRE (NTSC) or 0 IRE (PAL) | ||
| BBG 6 A J | 0 IRE (NTSC) | ||
| Tolerance for all levels | ±3% | ||
| Subcarrier levels | |||
| BBG 6 A |
NTSC 3.579545 MHz ±3 Hz PAL 4.433618 MHz ±3 Hz |
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| BBG 6 A J | NTSC 3.579545 MHz ±3 Hz | ||
| Color Bars output | |||
| Number/signal type | |||
| BBG 6 A | 2 color bars, switchable, standard SMPTE bars for NTSC, full field 8-bar for PAL | ||
| BBG 6 A J | Standard SMPTE bars for NTSC | ||
| Connectors | 2 BNC female | ||
| Standards | |||
| BBG 6 A | NTSC 3.58, PAL | ||
| BBG 6 A J | NTSC 3.58 | ||
| Impedance | 75 ohms | ||
| Sync level | |||
| BBG 6 A | 40 IRE for NTSC, 43 IRE for PAL | ||
| BBG 6 A J | 40 IRE for NTSC | ||
| Color burst level | |||
| BBG 6 A | 40 IRE for NTSC, 43 IRE for PAL | ||
| BBG 6 A J | 40 IRE for NTSC | ||
| Setup level | |||
| BBG 6 A | NTSC, 7.5 IRE; PAL, 0 IRE | ||
| BBG 6 A J | NTSC, 0 IRE | ||
| White level | 100 IRE | ||
| Tolerance for all levels | ±3% | ||
| Subcarrier levels | |||
| BBG 6 A | NTSC 3.579545 MHz ±3 Hz, PAL 4.433618 MHz ±3 Hz | ||
| BBG 6 A J | NTSC 3.579545 MHz ±3 Hz, no setup pedestal | ||
| Audio output | |||
| Number/signal type | 1 set (L and R) of stereo sine waves, balanced or unbalanced | ||
| Connectors | (1) 3.5 mm captive screw connector, 5 pole | ||
| Impedance | 50 ohms unbalanced, 100 ohms balanced | ||
| Signal level |
Selectable: professional level, +4 dBu (1.23 V) balanced; or consumer level, -10 dBV (316 mV) unbalanced |
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| THD | 0.1% | ||
| Tolerance for all levels | ±3% | ||
| Signal frequency | 1 kHz | ||
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| General | |||
| External power supply | 100 VAC to 240 VAC, 50/60 Hz, 2.5 watts, external; to 12 VDC, 1A, regulated power supply | ||
| Power input requirements | 12 VDC, 0.2 A (max.) | ||
| Temperature/humidity |
Storage: -40 to +158 °F (-40 t +70 °C) / 10% to 90%, noncondensing Operating: +32 to +122 °F (0° to +50 °C) / 10% to 90%, noncondensing |
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| Rack mount |
Yes, with optional 1U VersaTools® 3.5" deep rack shelf, part #60-190-20 (RSF 123) or 60-604-20 (RSB 123); or Universal 9.5" deep rack shelf, part #60-190-01 (RSU 129) or 60-604-01 (RSB 129) Also furniture mountable with optional under-desk mounting kit, part #70-212-01 (MBU 123) |
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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) (4.3 cm H x 10.9 cm W x 7.6 cm D) (Depth excludes connectors.) |
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| Product weight | 0.4 lbs (0.2 kg) | ||
| Shipping weight | 3 lbs (2 kg) | ||
| Vibration | ISTA 1A in carton (International Safe Transit Association) | ||
| Listings | UL, CUL | ||
| Compliances | CE, FCC Class A, VCCI, AS/NZS, ICES | ||
| MTBF | 30,000 hours | ||
| Warranty | 3 years parts and labor | ||
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