Tektronix SPG700 Multiformat Reference Sync Generator

Tektronix SPG700 Multiformat Reference Sync Generator

Tektronix SPG700 Multiformat Reference Sync Generator

B&H # TESPG700 MFR # SPG700
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  • 1Description

The SPG700 Multiformat Reference Sync Generator from Tektronix provides multiple video reference signals, such as black burst and HD tri-level sync, audio reference signals such as DARS and 48 kHz wordclock, and it supports various timecode formats for time reference generator applications.

The base configuration includes three sync outputs that can be configured with independent output formats (NTSC/PAL black burst and/or HD tri-level sync) and independently adjustable timing offsets. A high-accuracy, oven-controlled crystal oscillator provides a stable frequency reference for the system, or the pass-through GenLock input can be used to lock to an external video reference or 10 MHz continuous wave signal.

The SPG700’s Stay GenLock feature avoids synchronization shock if the external reference suffers a temporary disturbance, by maintaining the frequency and phase of each output signal. When the external reference is restored, Stay GenLock ensures that any accumulated clock drift is removed by slowly adjusting the system clock within standard limits instead of jamming back to the correct phase.

Time reference outputs are available in multiple formats. Three independent linear time code (LTC) outputs are available, and a fourth LTC connection can be used as input or output. Each LTC output has independent frame rate selection, time source (time-of-day or program time) and time zone offset. Vertical interval time code (VITC) is available on each NTSC or PAL black output, also with independent time sources and offset.

General Features
  • Multiple independent black burst and HD tri-level sync outputs provide all the video reference signals, while DARS and 48 kHz wordclock provide all the audio reference signals required in a broadcast or production facility
  • Four LTC outputs and VITC on black burst outputs provide time reference signals in a variety of formats
  • Stay GenLock prevents synchronization shock when the external reference input is temporarily lost
  • 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
Table of Contents
  • 1Description
Connector 2 x BNC, passive loop-through
Input Impedance 75 Ohms
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 -8 to 6 dB
S/N Ratio >40 dB
SC/H Phase (free-run) 0 ±40°
Return Loss ≥30 dB at 300 kHz to 10 MHz
Lock 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 Adjustments
Timing Timing Adjustment Resolution: <0.5° of NTSC/PAL subcarrier, 1 ns with tri-level sync input
Framing Color Framing: Keeps accuracy even with ±45° SCH error of input reference signal
Range Genlock Range: ±7.5 × 10-6
Time Setting
Source LTC input or VITC read from NTSC/PAL genlock input
Time Zones Time Zone Offset: −23:59 to 23:59
Daylight savings Daylight Saving Adjustment: Start/end from recurring calendar or manually scheduled, with adjustable offset
Second Order Leap Second Adjustment: Inserted at 00:00 UTC on the scheduled date, or deferred up to 24 hours
Time Code Input
Type LTC
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 Timing to Video: Compliant with SMPTE 12M and continues to operate over at least 90% of possible timing range
Signal Voltage 0.5 to 10 V p-p differential, 1 to 5 V p-p single ended
Tolerance 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 & Noise Hum Tolerance: 0 dB hum-to-signal ratio
Immunity Error Immunity: 100 consecutive frames with consistent time code must be detected for time to be considered valid
Input Impedance Nominal 600 Ohms differential, 300 Ohms single ended
Number of Outputs 3 x Analog sync
Connector 3 x BNC
Formats NTSC/PAL black burst, HD tri-level sync, or 10 MHz continuous wave
Combination NTSC/PAL Black Burst: Available on all outputs (BLACK 1-3)
HD Tri-Level Sync: Black outputs 1-3 can independently produce any of the formats from the integer rate group (24, 25, 30, 50, 60 Hz) or the non-integer rate group. (23.98, 29.97, 59.94 Hz)
10 MHz CW: BLACK 3 output only
Output Impedance 75 Ohms
Return Loss ≥40 dB from 300 kHz to 5 MHz
≥25 dB from 5 MHz to 30 MHz
Black Burst Out Standards: SMPTE 170M, ITU-R BT.1700-1, EBU N14, SMPTE RP154, RP318M-B
Formats: NTSC-M (7.5 IRE black), NTSC-J (0 IRE black), PAL-B
Timecode: Optional VITC insertion
Line: One or two lines, user selectable
Source: Time-of-day with adjustable offset, or program (elapsed) time counter
Amplitude Accuracy: ±2%
SCH Phase: < ±5°
Timing Adjustment: Independent per output
Range: Anywhere in the color frame
Resolution: Clock resolution 18.5 ns (1/54 MHz)
Fine resolution 0.1 ns on BLACK 1-3
Sync Output Type: HD tri-level
Standards: SMPTE 240M, 274M, 296M, RP211

Formats: 1080 / 60 / 59.94 / 50i
1080 / 30 / 29.97 / 25 / 24 / 23.98p
1080 / 24 / 23.98 psF
720/ 60 / 59.94 / 50p

Amplitude Accuracy: ±2%
Timing Adjustment: Independent per output
Range: Anywhere in the color frame
Resolution: Clock resolution 13.5 ns (1/74.25 MHz)
Fine resolution 0.2 ns for BLACK 1-3
LTC Outputs Number of Outputs: 3 or 4 (LTC1 is selectable as input or output)
Connector: Available through D-sub 15-pin connector
Formats: 24 fps (24 Hz or 23.98 Hz), 25 fps, 30 fps, 30 fps drop-frame (29.97 Hz) per SMPTE 12M
Source: Time-of-day with adjustable offset, or program (elapsed) time counter
Output Amplitude: 5 V ±10%, adjustable from 0.5 V to 5 V in 0.5 V steps
Wordclock Connector: 1 x BNC
Output Level: 5 VDC (CMOS compatible) or 1 VAC into 75 Ohms (AES level)
Frequency: 48 kHz
Formats Level A
1280 x 720:
60 / 59.94 / 50 / 30 / 29.97 / 25 / 24 / 23.98p

1920 x 1080:
60 / 59.94 / 50p
60 / 59.94 / 50i
30 / 29.97 / 25 / 24 / 23.98p
30 / 29.97 / 25 / 24 / 23.98psF

2048 x 1080:
30 / 29.97 / 25 / 24 / 23.98p
30 / 29.97 / 25 / 24 / 23.98psF

Level B Dual-Stream
2 x 1920 x 1080:
60 / 59.94 / 50i
30 / 29.97 / 25 / 24 / 23.98p
30 / 29.97 / 25 / 24 / 23.98psF

2 x 1280 x 720:
60 / 59.94 / 50i
30 / 29.97 / 25 / 24 / 23.98p
Test Patterns Color Bars: 100%, 75%, SMPTE EG1, SMPTE RP219, SMPTE EG432-1
Flat Field: Full field 0% (Black), 50%, 100% (White), Red, Green, Blue, Cyan, Magenta, Yellow
Linearity Test: Ramp, Limit Ramp, Valid Ramp, Shallow Ramp Matrix, 5/10 Step Staircase
Monitor: Checkerboard, Clean Aperture, Convergence, Black-White Step Scale, Black-Dark Gray Step Scale, Pluge and Luma Reference, Production Aperture, Window, SMPTE 303M Color Reference, ChromaDuMonde
SDI Pathological: Equalizer Test, PLL Test, SDI Matrix per SMPTE RP178/RP198
Frequency Response: Multiburst, Real-time parametric moving zone plate
Pulses: 2T Pulse and Bar, Color Pulses, Co-siting Pulse
Full-frame Picture: User-defined bitmap files (BMP format) can be downloaded to flash memory and displayed in any format
Overlay Logo: 24-bit color bitmap file (BMP format)or 32-bit with transparency, up to 1920 x 1080 pixel size. Adjustable on-screen position.
ID Text: Programmable string from front-panel entry (printable ASCII characters) or downloaded text file (UTF-8 encoding) for any Unicode characters. A preinstalled TrueType font is provided for Latin, Greek, and Cyrillic characters; an alternate TrueType font file may be downloaded to support other character sets. Character size is adjustable (%APH, 0.1% resolution).
Burnt-in Time Code: On-screen display of the current time code value (HH:MM:SS:FF) for the output, updated every field. Character size is 10% APH.
Circle: Adjustable diameter (%APH)
Border: Text and circle overlays are rendered as near-white objects, with a selectable enclosing near-black bounding area.
Blink: Text and circle overlays can blink on and off for dynamic on-screen activity
Position: All overlay objects have adjustable on-screen position.
Embedded Audio Standards: SMPTE 272M (SD), 299 (HD/3G)
Active Channels: 16 channels (SD, HD, 3G-A), 32 channels (3G-B)
Sample Frequency: 48 kHz
Digital Coding: 24-bit (HD, 3G), 20-bit (SD)
Signal Alignment: Async. and Sync. (no frame #), Synchronous (frame #)
Tone Frequency: 10.0 Hz to 20000.0 Hz, 0.5 Hz resolution
Level: -60 to 0 dBFS, 1 dB steps
Channel Identification: Audible click, AES channel origin bytes
Ancillary Data Error Detection and Handling: EDH packet inserted in SD-SDI signals per SMPTE RP165
Format: ATC-LTC and/or ATC-VITC
Source: Time-of-day with adjustable offset, or program (elapsed) time counter

User-programmable ANC Packet
Content: DID, SDID, DC, UDW (255), CS. Automatically calculate checksum and/or parity, or manual override.
Location: Line number, sample offset, luma/chroma channel, virtual link (3G)
Mode: Continuous insertion or single packet
Output DARS Output
Outputs: 2 channels (1 AES/EBU pair)
Output Impedance: 75 Ohms, unbalanced
Connector: 1 x BNC
Output Amplitude: 1 ±0.2 V
Sampling Frequency: 48 kHz (lock on video signal)
Quantization: Linear PCM, 20 or 24 s (2's complement)
Transfer Coding: Bi-phase mark
Internal Oscillator Performance Frequency Accuracy in Internal Mode: ±135 × 10-9 over 1-year calibration interval
Typically ±10 × 10-9 just after adjustment
Frequency Accuracy over Temperature: ±2 × 10-9 for ±5 °C variation
±10 × 10-9 for 0 to 50 °C
Frequency Variation from Vibration and Shock: ±25 × 10-9 from 6 ms half-sine shocks over 20 g
Frequency Drift: < ±100 × 10-9 per year for internal and Stay GenLock modes at constant temperature
Remote Access Network Interface: 10/100/1000Base-T
Configuration: Web-based user interface, HTML with JavaScript
Management: SNMPv2
GPI Connector: 1 x 9-pin D-sub connector for all input/output lines, 2 x outputs and one input on the same 15-pin D-sub connector as the LTC signals
Outputs: 3 x User-selectable to assert on specific events
1,2- Assert on one of: loss of lock, near loss of lock, loss of input signal, or timer expiry
3- Assert on logical OR of any of: fan fault, loss of lock, near loss of lock, loss of genlock input
Output Level: 0.5 to 5 V

Inputs: 2 x Using 4 pins on connector
1 x User-selectable to jam sync or restart timer
2 x Three pins on connector to recall preset 1-7
Input Level: 0.8 to 2.4 V
Environmental Power Consumption: 60 W (max) on active power supply input
60 W on backup supply input during 5 s daily load test
Temperature: 32 to 122°F / 0 to 50°C
Altitude: 9842' / 3000 m
Source Voltage: 100 to 240 V, 50/60 Hz
Dimensions 1.7 x 19 x 21.5" / 4.4 x 48.3 x 55.9 cm
Weight 10.7 lb / 4.85 kg
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