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The SPG8000A is a precision multiformat video signal generator, suitable for master synchronization and reference applications. It provides multiple video reference signals, such as black burst, HD tri-level sync, and serial digital and composite analog test patterns, and it provides time reference signals such as time code, NTP (Network Time Protocol), and IEEE 1588 PTP (Precision Time Protocol).
Reference input
- Connector
- BNC ×2, passive loop-through
- Input impedance
- 75 Ω
- Input signal
-
- NTSC/PAL black burst
- HD tri-level sync
- 1080/60/59.94/50I 1080/30/29.97/25/24/23.98P 1080/24/23.98PsF 720/60/59.94/50P
- 10 MHz continuous wave
- Amplitude range
- −8 dB to +6 dB
- S/N ratio
- >40 dB
- SCH phase
- 0 ±40°
- Return loss
- ≥30 dB at 300 kHz to 10 MHz
- Lock stability
-
- ±3 dB amplitude change
- <1 ns
- Jitter with burst lock
- <0.5°
- Jitter with sync lock
- <1 ns
- Jitter with CW lock
- <1 ns (typ. 1°)
Genlock
- Timing adjustment range
- Anywhere in the color frame
- Timing adjustment resolution
- <0.5° of NTSC/PAL subcarrier, 1 ns with tri-level sync input
- Color framing
- Keeps accuracy even with ±45° SCH error of input reference signal
- Genlock tune range
- ±7.5 × 10-6
GPS / GLONASS receiver (Option GPS)
- Type
- L1 frequency (GPS - 1575.42 MHz, GLONASS - 1602.00 MHz), C/A Code, 32 channels
- Time accuracy
- Within 150 ns to GPS/GLONASS/UTC
- Acquisition time
- 2 minutes on boot up with warm oven, good satellite signal, and known position
GPS / GLONASS antenna input (Option GPS)
- Connector
- BNC
- Input impedance
- 50 Ω, internally terminated
- DC antenna power output voltage
- 3.3 V or 5 V at 55 mA
- Fault protection
- Short-circuit/open detection and protection
- Return loss
- 8 dB at 1575 MHz
Time reference
- Source
- GPS or GLONASS signal, PTP input, LTC input, VITC read from NTSC/PAL genlock input, or can enter manually
- Time zone offset
- −23:59 to +23:59
- Daylight saving adjustment
- Start/end from recurring calendar or manually scheduled, with adjustable offset
- Leap second adjustment
- Inserted at 00:00 UTC on the scheduled date, or deferred up to 24 hours
LTC input
- Connector
- Available through D-sub 15-pin connector; Optional break-out cable to XLR connector available
- Formats
- 24 fps (24 Hz or 23.98 Hz), 25 fps, 30 fps, 30 fps drop-frame (29.97 Hz) per SMPTE 12M
- Timing to video
- Compliant with SMPTE 12M and continues to operate over at least 90% of possible timing range
- Signal voltage range
- 0.5 to 10 Vp-p differential, 1 to 5 Vp-p single ended
- Noise tolerance
- –30 dB SNR RMS white noise with 10 kHz BW to the p-p signal level, or –10 dB SNR for 5 MHz white noise
- Hum tolerance
- 0 dB hum-to-signal ratio
- Error immunity
- 100 consecutive frames with consistent time code must be detected for time to be considered valid
- Input impedance
- Nominal 600 Ω differential, 300 Ω single ended
- Multiple independent black burst and HD tri-level sync outputs provide all the video reference signals required in a video broadcast or production facility
- Four LTC outputs, VITC on black burst outputs, and NTP server provide time reference signals in a variety of formats
- PTP (IEEE 1588) support, including SMPTE ST 2059-2 and AES67 profiles
- GPS/GLONASS-based synchronization gives an accurate time-of-day reference and deterministic video phase reference across multiple independent systems
- Stay GenLock® and Holdover Recovery prevent synchronization shock when the external reference input, PTP, or GPS/GLONASS signal is temporarily lost
- Wide selection of video test patterns in serial digital formats (SD, HD and 3G-SDI) and composite analog formats (NTSC and PAL)
- 4K/UHD formats support with full frame 100% and 75% color bars (Quad Link Square Division)
- Dual hot-swappable power supplies ensure continuous availability of reference signals
- Easy to manage with Web-based interface for remote configuration and SNMP for status and alert information
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