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.
Summary of Contents for 1730 Series
Page 4: ......
Page 12: ...Contents viii...
Page 17: ...Introduction and Specifications...
Page 18: ......
Page 32: ...1730 Series Introduction 1 14...
Page 33: ...Operating Instructions...
Page 34: ......
Page 62: ...1730 Series Operating Instructions 2 28...
Page 64: ...Service Safety Summary S 2 1730 Series B070000 Above...
Page 66: ......
Page 67: ...Installation...
Page 68: ......
Page 82: ...1730 Series Installation 3 14...
Page 83: ...Theory of Operation...
Page 84: ......
Page 115: ...Checks and Adjustments...
Page 116: ......
Page 159: ...Maintenance...
Page 160: ......
Page 180: ...1730 Series Maintenance 6 20 3 Remove the board by slipping it through the front panel opening...
Page 184: ...1730 Series Maintenance 6 24 Figure 6 8 Repackaging a 1730 Series instrument...
Page 185: ...Options...
Page 186: ......
Page 189: ...Replaceable Electrical Parts...
Page 190: ......
Page 222: ...1730 Series Replaceable Electrical Parts 8 32...
Page 223: ...Diagrams Circuit Board Illustrations...
Page 224: ......
Page 246: ......
Page 247: ...Replaceable Mechanical Parts...
Page 248: ......
Page 255: ...1730 Series Waveform Monitor FIG 1 EXPLODED VIEW A1 A3 A2 A3A1 A10 A11...
Page 256: ...1730 Series B070000 Up...
Page 257: ......
Page 258: ......