Atec Tektronix-TG700 - Manual (Page 5)

Multiformat Video Generator — TG700
SDI7 SD/HD/3G-SDI Test Signal Generator.
The SDI7 is a test signal generator that provides two independent channels
of SD/HD/3G-SDI video test signal generation in a variety of formats with
2 outputs for test and test/black signal generation per channel (3G-SDI
signal generation is optionally available). The SDI7 can generate up to
32 channels of 24-bit 48 kHz embedded audio, with independently set
frequency and amplitude for each channel. The SDI7 also has the ability
to generate other types of ancillary data, such as video payload identifier,
ancillary time code, and user-defined packets. The SDI7 includes a wide
variety of standard test signals, including SMPTE color bars, pathological
test patterns, and a programmable moving zone plate pattern, and it also
has the ability to generate full frame test signals created by the user. AV
timing signal generation, when used in conjunction with a waveform monitor,
can be used to ensure that audio and video are synchronized through a
video path. Circle, multi-language text, and color logo overlays may be
applied to the generated test signals to check aspect ratio, identify streams,
or apply station logos. The SDI7 has a clock/frame trigger output that can be
used to trigger an oscilloscope to be synchronous with the video output.
Characteristics
AGL7, Analog Genlock Module
Reference Input
Characteristic Description
Input Connector BNC ×2, passive loopthrough
Input Impedance 75 Ω
Input Signal NTSC/PAL black burst or HDTV tri-level sync (720p,
1080i)
Amplitude Range Standard ±6 dB
S/N Ratio >40 dB
SCH Phase 0 ±40°
Return Loss ≥30 dB at 5 MHz to 30 MHz
Burst Lock / Sync Lock
Stability
±3 dB amplitude change: <1 ns
Jitter with burst lock <0.5°
Jitter with sync lock <1 ns
CW Input
Characteristic Description
Input Connector BNC ×1, internally terminated
Input Impedance 75 Ω
Input Signal CW (continuous wave)
Amplitude 2 V (1 to 2.25) V
p-p
Frequency NTSC/PAL FSC, 1/5/10 MHz
Return Loss >30 dB to 30 MHz
CW Lock Stability
Over the amplitude
range
<1 ns
Jitter <1 ns (typ. 1°) with CW input S/N >50 dB
Genlock
Characteristic Description
Genlock Time Adjustment
Range Anywhere in the color frame
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 input
Reference Outputs
Characteristic Description
Output Signal
Black 1 NTSC/PAL black burst output
Black 2, 3 NTSC/PAL black burst output or tri-level HDTV sync
Output Format Combination of the following:
1. NTSC/PAL black burst ×3 (one black burst is
independent, two black burst are distributed outputs)
2. NTSC/PAL black burst ×2, HDTV tri-level sync ×1 (all
three outputs are independent)
3. NTSC/PAL black burst ×1, HDTV tri-level sync ×2
(HDTV tri-level are distributed from the same source)
Output Impedance 75 Ω
Return Loss >30 dB to 30 MHz
NTSC/PAL Black Burst Output
Characteristic Description
Output Standard EBU N14, SMPTE RP154
PAL-M and PAL-N are not supported
Amplitude Accuracy Std. black burst ±2%
Burst Frequency NTSC/PAL FSC ±1 Hz
SCH Phase < ±5°
Timing Adjustment
Range Anywhere in the color frame
Resolution <0.5° of NTSC/PAL subcarrier
HDTV Tri-level Sync Output
Characteristic Description
Standard SMPTE 240M, 274M, 296M, RP211
Formats 1080i/50 Hz, 59.94 Hz, 60 Hz
1080p/23.98 Hz, 24 Hz, 25 Hz, 29.97 Hz, 30 Hz
1080psF/23.98 Hz, 24 Hz
720p/59.94 Hz, 60 Hz
Amplitude Accuracy Std. HDTV tri-level ±2%
Timing Adjustment
Range Anywhere in the frame
Resolution <1 ns
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