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Specifications
1–10
1780R-Series Service Manual
Table 1–4: Waveform Monitor Horizontal Deflection System (Cont.)
Characteristic
Performance
Check Step
Supplemental InformationPerformance Requirement
RGB/YRGB
Staircase Input Amplitude A +10 V input will result in a
horizontal display of 9 divisions
±1.4 major divisions.
Ground to +10 V. +10 V corre-
sponds to left side of CRT.
37
Staircase Operating Signal DC Signal levels plus peak AC,
not to exceed _–12 to +12 V.
Max AC Signal Volts 12 V peak-to-peak. Field or line rate sweeps.
Sweep Length
RGB 2 Fld = 27 – 33% of normal.
1 Line = 27 – 33% of normal.
2 Line = 27 – 33% of normal.
YRGB 2 Fld = 20 25% of normal.
1 Line = 20 – 25% of normal.
2 Line = 20 – 25% of normal.
Sweep Repetition Rate Field or line rate of displayed
video or external sync signal as
selected by front-panel HORI-
ZONTAL controls.
Requires 1H or 1Fld sweep
selection.
External Horiz. Input Used for ICPM measurements.
Sensitivity Direct coupled 0 – 5 V. Sawtooth
input of up to 5 V is nominally a
10 division horizontal sweep.
38
Input Impedance ≈10 kW.