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Adjustment Procedures
5–12
1780R-Series Service Manual
Procedure
This Adjustment Procedure is a continuous sequential procedure. If a step is
performed out of sequence, pertinent control settings are given within the step.
Remaining control settings can be determined by referring to Table 5–3;
however, sometimes it may be necessary to go back one or more steps to check
for possible changes.
Table 5–3: 1780R-Series Initial Control Settings
Front-Panel Control Setting CONFIGURE Menu Selection* Setting
POWER ON SYNC DIR
LEFT DISPLAY VECT COUPLING DC
RIGHT DISPLAY WFM FIELD TRIG F1
INPUT CH A PAL/+V (for PAL only) PAL
REF EXT FIXED CAL AMPL 1000 (mV)
FILTER FLAT CLAMP BP
WFM HORIZONTAL TWO–LINE DC RESTORER OFF
VECTOR GAIN Off SYSTEM (for PAL only)** as desired
WAVEFORM GAIN Off VECT GRAT INT
MAGNIFIER OFF PHASE DISPLAY 360
VAR/SLOW Off BARS 75%
Buttons below CRT as desired SETUP (for NTSC only) YES
SCALE as desired WFM GRAT INT
FOCUS as desired PROBE X1
INTENSITY as desired ABS UNITS (for NTSC only) mV
VERT POS as desired CW SYNC EXT
HORIZ POS as desired SLOW SWP TRIG +
Precision Measurement Off BAUD RATE as desired
Menu Selection Switches Off KNOB ASSIGN TIMEOUT OFF
VECT READOUT ON
WFM READOUT ON
BEEP ON
* Applies to VERSION 1.11 instruments (VERSION is displayed on page 3 of the CONFIGURE menu.)
** SYSTEM (for PAL only): Select B/G or 1, whichever applies to your PAL system.