1730–Series Operating Instructions
2–27
Table 2–1: (Cont.) Preset Front Panels
Front–Panel Control
Preset 4
(pin 12)
Preset 3
(pin 15)
Preset 2
(pin 14)
Preset 1
(pin 13)
HORIZONTAL Magnifier off off off off
LINE SELECT off 15 LINE ON off
LINE SELECT (Line) ––– 100 19 –––
RGB/YRGB Display
RGB staircase signals, either 3– or 4–step, are input to the 1730–Series through
the rear–panel REMOTE connector. A 10 V input will provide a horizontal
sweep length between 7.6 and 10.4 major graticule divisions. An adjustment on
the Main circuit board (R856) can be used to adjust for offsets in various
staircase signals. RGB sweep is enabled by a TTL low, which can be a ground
closure applied to pin 2 of the rear–panel 15–pin connector. (There is a
connector drawing in Section 3, Installation, of this manual.) The staircase
signal is input through pin 1 of the connector.
Field and line rate displays, controlled by front–panel SWEEP settings, are
available. These sweep rates can be magnified (2LINE X10 and 2FLD or 1LINE
X25). In addition, a low (ground closure) at pin 3, when 2FLD Sweep is
selected, provides a 1 Field Sweep.
Remote Sync
Pin 10 of the REMOTE connector is a remote sync input. A 30 or 60 Hz (25 or
50 Hz for PAL) square wave signal with an amplitude of 2 to 5 volts will trigger
the 1730–Series 2FLD Sweep. In addition, a 4 V composite sync signal can also
be used as a remote sync signal. Pin 4, when pulled low (TTL low or ground)
enables the Remote Sync triggering.
90 Hz (NTSC) or 100 Hz (PAL) Trigger
Pin 10 of the REMOTE connector (REM SYNC IN) is also used as the input for
90 Hz (100 Hz PAL) triggering associated with D2 VTRs. The internal remote
Sync Polarity jumper (A3J635) and 90/100 Hz Trigger Enable jumper (A3J540)
will have to be moved to accept this trigger signal. See Section 3 (Installation).
When the internal jumpers have been reset and pin 4 (REM SYNC EN
) is
grounded, the 90 Hz (100 Hz PAL) triggering is enabled. Once the jumpers are
enabled and 2FLD SWEEP is selected, a 2 V or greater 90 Hz (100 Hz PAL)
square wave, applied to REMOTE connector pin 10 (REM SYNC IN
), will
trigger a 1–field sweep.
To Next Page
Loading...
Need help?
General
