Samsung VP-L900 Training Manual page 100

6-2-2 Drum servo
(1) Drum speed control
The Drum the Speed Control controls in order to maintain the FG quantity. The Drum Speed measures the
period of the D.FG signal which becomes the input in 103 pin of the micom with becomes the detect. The
speed detect accomplishes 30 degrees in drum rptate angle. The FG quantity which it follows in the MODE
refers the lower part contents.
SPEED DRUM FG
-19 334.1775
-15 338.9787
-9 346.4422
-7 349.0037
-1 356.9206
0 358.2751
1 359.64
5 365.205
7 368.0526
9 370.9450
15 379.9014
19 386.1167
SPEED DRUM FG
-15 272.133
-9 281.955
-7 285.387
-5 288.906
-1 296.208
0 298.092
1 300.000
5 307.882
7 311.979
9 316.189
15 329.525
Samsung Electronics
<Table 6-10 NTSC>
SP
fv REMARKS
REW
58.167 RPS
59.487 EDIT-
59.713 STILL
59.94 PLAY
60.868
61.342
61.824 FPS
FF
<Table 6-11 PAL>
SP
fv REMARKS
45.3555 REW
46.9925
47.5645 RPS
48.151
49.368 EDIT-
49.682 STILL
50 PLAY
51.3137
51.9965
52.6982 FPS
54.9208 FF
SPEED DRUM FG
-19
-15
-9 352.9303
-7 354.2521
-1 358.2777
0 358.9576
1 359.64
5 362.3959
7 363.7897
9 365.1943
15 369.4739
19
SPEED DRUM FG
-15
-9
-7 292.512
-5 294.348
-1 298.092
0 299.042
1 300
5 303.889
7 305.873
9 307.881
15
Circuit Operating Description
LP
fv REMARKS
59.040 RPS
59.713 EDIT-
59.826 STILL
59.94 PLAY
60.400
60.633
60.868 FPS
LP
fv REMARKS
48.752 RPS
49.058
49.682 EDIT-
49.8403 STILL
50 PLAY
50.6482
50.9788
51.3135 FPS
6-21