User manual

Appendix A: Performance Specification
WFM 90 & WFM 91 User Manual
A–5
A-4.
Horizontal deflection system 
CATEGORY
DESCRIPTION
Sweep REQ: Sweep will occur in all Horizontal mode
settings with or without synchronization.
REF: Sweep Length: Two Line and
Two Field sweep length is nominally
12 divisions.
1LINE Sweep Repetition
Rate
REQ: Equal to line-rate of applied video or exter-
nal sync.
2LINE Sweep Repetition
Rate
REQ: Equal to half line-rate of applied video or
external sync.
2FLD Sweep Repetition Rate REF: Displays 2 full fields, including the
field-rate sync between them.
2FLD Sweep Magnification REF: Approximately X20.
Sweep Magnifier
Registration
REF: Magnification occurs about the cen-
ter of the screen.
Timing Accuracy REF: All timing and linearity specifications
exclude the first and last major divi-
sions of the unmagnified display.
REQ: 10 s/division (2LINE): Within 2%.
REQ: 5 s/division (1LINE): Within 2%.
REQ: 1 s/division (2LINE + MAG): Within 2%.
REQ: 0.5 s/division (1LINE + MAG): Within 3%.
Integral Linearity REQ: Within 1%.
REF: Measured between the 10 s and
110
s points on the 10 s/division
(2LINE) sweep.
Horizontal Position REF: Any portion of a synchronized video
sweep can be positioned on-screen
in all sweep modes.