Sony Betacam SX DNW-A22 Operation Manual page 11

3 PHONES jack and control
Connect stereo headphones with an impedance of 8
ohms, to monitor the sound during playback and
editing.
The control knob adjusts the volume.
It is possible to make a setting so that the output
volume from the MONITOR OUTPUT connectors is
controlled simultaneously.
In order that the output volume from the MONITOR
OUTPUT connectors can be controlled simultaneously, an
internal board switch setting is required. For details, refer
to the Maintenance Manual Part 1.
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1) LTC: abbreviation of Longitudinal Time code. This
time code is recorded on a longitudinal track on the tape.
Reading is unreliable at low speeds, and not possible at
all during still playback.
2) VITC: abbreviation of Vertical Interval Time code.
This is inserted in the vertical blanking interval and
recorded on the video tracks.
4 Time code setting section
TC switch and indicators
LTC
VITC
TC
TC (time code) switch and indicators
1)
This switch selects LTC
displayed in the lower control panel. The indicator
corresponding to the selection lights.
Note
In this unit, VITC may not be displayed correctly
except during normal playback.
DF/NDF (drop-frame/non-drop-frame) switch and
indicators
In a 525/60 system, this switch selects the
mode of advancing the time code generator and CTL
counter.
DF: Drop-frame mode. 3)
NDF: Non-drop-frame mode.
The indicator corresponding to the selection lights.
3) Drop-frame/non-drop-frame mode: In the NTSC
system, the actual frame rate is 29.97 frames per second.
There is therefore a cumulative discrepancy between the
actual frame rate and the 30 frames per second rate on
which time code is based. In drop-frame mode, except
once every 10 minutes, the first two frames are skipped
at the beginning of each minute to keep the time code
values in step with actual elapsed time. In non-drop-
frame mode, the correction is not carried out, and there is
a discrepancy of about 86 seconds per day between
actual elapsed time and time code values.
Chapter 2 Location and Function of Parts
DF/NDF switch and indicators
DF
NDF
2)
or VITC as the time code
3)
2-3