Performance Characteristics
Table 6-3 (cont)
Option
05
(TV) Electrical Characteristics
Characteristics Performance Requirements
TV (Back-Porch) Clamp
(CH
2 only) For VOL TS/DIV settings between 5 mV and
0.2
V with VAR control
in
calibrated detent.
Six-division reference
signal.
60
Hz Attenuation ;;;.18 dB.
Back-Porch Reference Within 1
.0
division of ground reference.
TRIGGERING
Sync Separation Stable video rejection and sync separation from
sync-positive or sync-negative composite video,
525 to 1280
lines, 50 Hz or 60 Hz, interlaced or
non
interlaced systems.
For noninterlaced scan systems, the video
signal source must start and end with full lines
of video for correct line identification
in
the field
trigger modes.
Line
Selection Range
in
FLD1, The lesser of 1280 or the number of lines
in
the
FLD2, or Both
Coupling Modes
field.
Input Signal Amplitude
for Stable
Triggering
Channel 1 or Channel 2
Minimum
sync-pulse amplitude within 18
divisions of input ground reference.
Composite
Video 1 division.
Composite
Sync
0.3 division.
Channel 3 or Channel 4
Minimum
sync-pulse amplitude within 9
divisions of input ground reference.
Composite
Video 0.5 division.
Composite
Sync
0.25 division.
2465A/2455A/2445A Operators 6-23
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