Tektronix Webcam 070-8030-01 ユーザーズマニュアル
Installation
2–6
1780R-Series Service Manual
Table 2–3: Plug Jumpers for Waveform Board (Assembly A2)
(Schematic Diagrams 3 through 15)
(Schematic Diagrams 3 through 15)
Jumper
Number
Number
Name
Plug Position
Purpose
J192
<9>
<9>
Remote Sync Polarity
1-2
{
2-3
Positive
Negative
J585
<10>
<10>
RGB YRGB
1-2
2-3
{
3-Step RGB Parade
4-Step YRGB Parade
J858
<9>
<9>
Sound-in-Syncs
1-2
{
2-3
Normal
Sound-in-Syncs
J694
<10>
<10>
NTSC PAL
1-2
2-3
NTSC (1780R)
PAL (1781R)
J865
<9>
<9>
Sync for Vector Clamps
1-2
{
2-3
Reference as source
Input Signal as source
J866 & J867
<9>
<9>
Sync for Waveform
Clamps
Clamps
1-2
{ & 1-2 {
2-3 & 2-3
Reference as source
Input Signal as source
J986
<15>
<15>
SCH Course Adjust
Varies with the
circuits.
circuits.
4-position jumper set up
during calibration
during calibration
J1081
<14>
<14>
Frame Pulse Select
1-2
{
2-3
Internal
Ext. Video
J1085
(Active in NTSC only)
<14>
(Active in NTSC only)
<14>
SCH Display Mode
1-2
{
2-3
Double
Single
J1103
<7>
<7>
Line Strobe
1-2
2-3
{
Line Select
Field 1 Pulse
J1483
<8>
<8>
Sound-in-Syncs
1-2
{
2-3
Normal
Sound-in-Syncs
{
Factory installed position.