Performance Verification
1710J-Series Waveform Monitors
6–13
11. Turn off X5 VERTICAL GAIN.
12. Check the flat response using the 50 kHz response as a reference. Check that
the response is within
±
2% from 250 kHz to 6 MHz.
The requirements are shown in Table 6–6.
Table 6–6: Transient Response
Requirement
Tolerance
2T Pulse and Bar
Preshoot
1% or less
Pulse-to-bar ratio
1:1 within 1%
Overshoot
2% or less
Ringing
2% or less
Tilt,field-rate square wave or
25
m
s bar
1% or less
12.5T modulated pulse (20T for
PAL) baseline overscan
Less than 2% over the
middle 80% of the display
1. Use a 75
W
coaxial cable to connect the television test signal generator pulse
and bar signal to the CH B input. Terminate the remaining side of the
loop-through input with a 75
W
end-line terminator.
2. Select INT REF.
3. Select the full amplitude 2T pulse and bar signal from the television test
signal generator. Display the signal with the 1 LINE sweep.
4. Check for less than 1% preshoot and less than 2% overshoot and ringing for
the pulse and bar transitions.
5. Check for a pulse-to-bar ratio within 1% of unity.
6. Check for less than 1% tilt across the bar.
7. Select the field square wave signal. Display the signal with the 2 FLD
sweep.
8. Check for less than 1% tilt across the high APL portion of the display.
9. Set the 1710J-Series Waveform Monitor VERTICAL to X5 gain.
10. Select 2 LINE sweep and MAG ON.
11. Display the 12.5T modulated pulse for NTSC or 20T for PAL. Position the
baseline over the center 140 IRE (NTSC) or 1 V (PAL).
Check Transient
Response
Содержание 1710J Series
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