For.A EDD-5200 Time Lag Checker

This equipment can measure the video delay time, audio delay time, difference between audio channels and difference between video and audio using test time code (hereafter called TTC) signals.

• Generates TTC signals whose phases are the same as those of video, audio or VANC signals and outputs them as video, audio or VANC
• Measures video and audio delay time by routing video and audio signals back to Time Lag Checkers through the desired devices and lines and by comparing the time from output to input (return). Also measures video and audio delay time of devices or lines by comparing phases of TTC signals that are routed back to Checkers
• Estimates delay time in long distance with GPS using two Time Lag Checkers

HD/SD multi-format support
The Time Lag Checker supports the following video and audio standards:

• Video standards
• SMPTE 259M 270Mbps SD-SDI (D1 NTSC,PAL)
• SMPTE 292M 1.485Gbps, 1.485/1.001Gbps HD-SDI (1080i 50/59/60,720p 50/59/60)
• SMPTE 424M 2.97Gbps, 2.97/1.001Gbps 3G-SDI (1080p 50/59/60)
• 3G SDI: "Level A YC4:2:2 10bit" and "Level B Dual-link YC4:2:2 10bit" only Audio standards
• AES/EBU
• Embedded Audio(8ch)

Long Distance Delay Measurements
Long distance delay measurements are possible using two Time Lag Checkers whose clocks are synchronized with a GPS clock. Audio and video delay time in long distance can be measured without GPS synchronization. Measurements using GPS cannot be performed if four or more GPS satellites cannot be acquired due to the lack of antenna coverage or weather conditions.

Various Measurement Modes
• Delay time of video and audio
• Video transmission delay time
• Delay time of video and VANC
• Audio transmission delay time
• Delay between audio channels in various combinations
• Delay measurement of signals with different formats (with some restrictions)

Measurement Log Output
All information required for delay calculations, such as time codes, reference signal information and delay measurement values against reference signals, can be output from the Checker to a computer via Ethernet for later analysis on the computer.

High Accuracy Measurements
The accuracy of measurements is within 0.001 msec.

• Within 1 msec for Embedded SD Audio
• Excluding cases when GPS satellites cannot be acquired

Multiplexing TTC onto Input Video Signals
Compression, decompression or other performances of video or audio devices can be evaluated according to video sources by multiplexing TTC onto input video signals.

Difference Measurements between Video and VANC
Differences between video and VANC can be measured by multiplexing TTC signals into VANC areas.

Built-in High Precision Clock(synchronized by GPS)
In open air, synchronize the Checker's clock with a GPS clock. Once the clock synchronization is performed, the clock keeps time within 1 ms accuracy while GPS LED is lit green (about 3 hours).