Field Key; Line Key; Holdoff Key - HP 54501A Operation Reference

level/polarity Key The level option allows you to set the trigger level that is applicable only to

field Key

line Key

holdoff Key

Trigger Menu
6-28
tv source.
the trigger
•
Press the selection key again and the highlighted window moves to the
polarity option and allows you to select the rising edge or falling syoc
pulses to trigger on.
The field key allows you to select field, 1 or 2.
The line key allows you to select which line the trigger
on. This selection is dependent upon which field has been selected
previously.
If the previous selection
available depend upon which field, 1 or 2 is selected:
•
If field 1 is selected, you
•
If field 2 is selected, you
tv
This
trigger mode is compati b le with broadcast standard
Hz,
625
50
If the lines standard is selected, the options are also dependent
upon field settings:
•
If field 1 is selected the range of lines is from 1 to
•
If field 2 is selected the range of lines
This tv
trigger mode is compatI b le with broadcast standards:
H, 1, K, Kl, L, and
N.
The holdoff key enables the oscilloscope to hold off the trigger event from
40
ns to 320 ms and is incremented in 20 ns time frames.
Hz,
is 60
the 525 lines standard, the options
can
select from line 1 to 263 in field 1.
choose from line 1 to 262 in field 2.
can
if
from 314 to 625.
will
be generated
M.
313,
E,
C, D,
G,