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SD-SDI Test Signal Generator

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The 7750TG Test Signal Generator provides a cost-effective method of generating 270Mb/s serial digital test signals. The 7750TG is ideal for checking signal path integrity, monitor alignment or to determine system performance over varying cable lengths. The 7750TG generates a wide variety of industry standard test signals in 525 line and 625 line SMPTE ST 259-C video formats and offers four 270Mb/s outputs. Error detection and handling (EDH) codes are embedded on all the outputs to allow you to verify the performance of your digital signal paths.

The 7750TG provides an analog genlock input that allows you to synchronize the test signals to your plant horizontal and vertical timing.

Separate audio tones can be embedded into each channel of one of the four embedded audio groups. The user can select which of the audio groups the tones will be embedded into. The audio level is fixed at -20dB full scale.


  • 525 line and 625 line formats
  • Card edge toggle switch selects test signal
  • On-screen display of test signal names
  • 4 embedded audio tones, selectable audio group assignment
  • 4 output drivers
  • On-screen text message can be used for source identification
  • On-screen setup menu
  • Card edge LEDs indicate genlock presence and module health


Genlock Input

Type NTSC or PAL Color Black 1V p-p
Composite Bi-level sync (525 Line or 625 Line) 300mV
Connector 1 BNC per IEC 61169-8 Annex A
Termination 75Ω (jumper selectable)

Serial Video Output

Standard SMPTE ST 259-C (270Mb/s)
Embedded Audio Up to 4 tones in one audio group as specified in SMPTE ST 272
Selectable tone frequencies (from 60Hz to 10kHz) and audio group
Audio level is set to 20dB full scale
Number of Outputs 4
Connectors 4 BNC per IEC 61169-8 Annex A
Signal Level 800mV nominal
DC Offset 0V ±0.5V
Rise and Fall Time 740ps nominal
Overshoot < 10% of amplitude
Wide Band Jitter < 0.2UI


Voltage +12V DC
Power 6 watts
EMI/RFI Complies with FCC Part 15, Class A, EU EMC Directive


Number of Slots 1

Ordering Information

7750TG SD-SDI Test Signal Generator

Ordering Options

Notes Rear plate must be specified at time of order - eg: [model]+3RU
Rear Plate Suffix
+SA Standalone Enclosure Rear Plate
+3RU 3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR Multiframes


350FR Portable Multiframe which holds 7 single slot modules
7700FR-C 3RU Multiframe which holds 15 single slot modules
7800FR 3RU Multiframe which holds 15 single slot modules
7801FR 1RU Multiframe which holds up to 4 single slot or 2 dual slot modules
S7701FR 7700 Series Standalone Enclosure