3 PHONES jack and control4 Time code setting section
Connect stereo headphones with an impedance of 8
ohms, to monitor the sound during playback and
TC switch and indicatorsDF/NDF switch and indicators
editing.
The control knob adjusts the volume.
It is possible to make a setting so that the output
LTC
volume from the MONITOR OUTPUT connectors is
Chapter 2Location and Function of Parts
DF
controlled simultaneously.
VITCNDF
In order that the output volume from the MONITORTC
OUTPUT connectors can be controlled simultaneously, an
internal board switch setting is required. For details, refer
to the Maintenance Manual Part 1.
TC (time code) switch and indicators
1)2)
This switch selects LTC or VITC as the time code
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.
3)
DF: Drop-frame mode.
3)
NDF: Non-drop-frame mode.
The indicator corresponding to the selection lights.
..........................................................................................................................................................................................................
1) LTC: abbreviation of Longitudinal Time code. This3) Drop-frame/non-drop-frame mode: In the NTSC
time code is recorded on a longitudinal track on the tape.system, the actual frame rate is 29.97 frames per second.
Reading is unreliable at low speeds, and not possible atThere is therefore a cumulative discrepancy between the
all during still playback.actual frame rate and the 30 frames per second rate on
which time code is based. In drop-frame mode, except
2) VITC: abbreviation of Vertical Interval Time code.once every 10 minutes, the first two frames are skipped
This is inserted in the vertical blanking interval andat the beginning of each minute to keep the time code
recorded on the video tracks.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 Parts2-3 |
ACEC
