Tektronix Webcam 070-8030-01 User Manual
Table of Contents
vi
1780R-Series Service Manual
Figure 4–1: 5% signal Attenuator for checking differential gain
4–4
. . . .
Figure 4–2: Rear view of the X Y plug connections. (Pins 2, 4, 6,
10, 12, and 14 can be used to make ground connections.)
4–5
. . . . . . .
Figure 4–3: REMOTE connector modified for Remote Sync input
4–5
. .
Figure 4–4: RGB Parade Display Test Connector
4–6
. . . . . . . . . . . . . . . .
Figure 4–5: Initial equipment hook-up for the Performance Check
Procedure
4–11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–6: Test equipment connections for checking calibrator
amplitude accuracy
4–13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–7: Identification of marks and divisions on the graticule
baseline
4–16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–8: Test equipment connections for checking CH A
frequency response
4–23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–9: Connections for checking AUX OUT frequency response.
(Only Ch 1 of the test oscilloscope dual-trace unit is used.)
4–27
. . . . .
Figure 4–10: Vector graticule showing the –3 dB points for checking
frequency response
4–55
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–11: Properly adjusted xy input gains
4–61
. . . . . . . . . . . . . . . . . . .
Figure 4–12: Connections for checking line strobe pulse timing
4–63
. . . .
Figure 4–13: Setting up the Return Loss Bridge: a) setup 500 mV
amplitude; b) Nulling the bridge
4–66
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–14: Measuring return loss of 1780R-Series CH A INPUT
4–67
. .
Figure 5–1: Simplified representation of the 1780R-Series Video
Measurement Set, showing the location of the four control
groups
groups
5–2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–2: Calibrate menu as displayed on the Vectorscope CRT
5–2
. .
Figure 5–3: 1780R-Series circuit board assembly locations
5–3
. . . . . . . .
Figure 5–4: Rear view of the X Y plug connections. (Pins 2, 4, 6,
10, 12, and 14 can be used to make ground connections.)
5–7
. . . . . . .
Figure 5–5: RGB Parade Display Test Connector
5–7
. . . . . . . . . . . . . . . .
Figure 5–6: Initial signal connections for re-adjustment of the
1780R-Series
5–13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–7: Adjustment and test point locations on the
Waveform HV Supply circuit board (Assembly 16.)
5–15
. . . . . . . . . . .
Figure 5–8: Adjustment locations on the Vectorscope HV Supply
circuit board (Assembly A3)
5–17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–9: Adjustment locations on the Microprocessor circuit
board (Assembly A5)
5–18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–10: Waveform circuit board (Assembly A2) adjustment,
test point, and jumper locations.
5–19
. . . . . . . . . . . . . . . . . . . . . . . . . . .