Panasonic AJSDX900P - 24P DVCPRO 50, Руководство по обслуживанию

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ELE-21
4. ADJUSTMRNTS FOR RF SECTION
Before starting each adjustment, click “1. Initial Set” of the VTR Adjustment software.
4-1. RF Envelope Level Adj.
BOARD H BUFF Board
TP TP5 (RFENV), TP2 (HID)
ADJ. EVR
MODE PLAY (ATF Servo)
TAPE
NTSC: VFM3380KM
PAL : VFM3480KM
M. EQ. -
SPEC. A = 500mVp-p
±
100mV
1. Playback a color bar portion of an alignment tape.
2. Connect a scope to
TP5 (RFENV) and TP2 (HID).
3. Click the “2. RF Envelope Level Adjustment” of the
VTR Adjustment software.
4. Adjust the slider on the PC so that the level of TP5
becomes 500mVp-p
±
100mV as shown below.
5. Click “>>” .
6. Adjust the slider on the PC so that the level of TP5
becomes 500mVp-p
±
100mV as shown below.
7. Click “>>” .
8. Confirm that the 25M R-ch envelope and Click
“OK” .
9. Confirm that the 25M L-ch envelope and Click “OK” .
4-2. Playback Error Rate
Confirmation
BOARD -
ADJ. -
MODE PLAY
TAPE
NTSC: VFM3380KM
PAL : VFM3480KM
M. EQ. -
SPEC. See Figure
1. Click
the “3. Playback Error Rate Confirmation” of
the VTR adjustment software.
2. Playback an
alignment tape
.
3. Confirm that the 50M L-ch error rate is in the
specification as shown figure.
4. Click “OK” .
5. Confirm that the 50M R-ch error rate is in the
specification as shown figure.
6. Click “OK” .
7. Confirm that the 25M R-ch error rate is in the
specification as shown figure.
8. Click “OK” .
9. Confirm that the 25M L-ch error rate is in the
specification as shown figure.
10. Click “OK” .
4-3. Flying Erase Confirmation
BOARD HBUFF Board
TP TP4 (FE35), TP2 (HID)
ADJ. -
MODE REC, REC-PAUSE
TAPE DVCPRO BLANK
M. EQ. Oscilloscope
SPEC. 500mVp-p
±
200mV
1. Set
the “OUTPUT” switch to “BARS” .
2. Click the “4. Flying Erase Confirmation” of the VTR
adjustment software
3. Confirm that the 50M L-ch level of erase current is in
the specification.
4. Click “OK” .
5. Confirm that the 50M R-ch level of erase current is in
the specification.
6. Click “OK” .
7. Confirm that the 50M C-ch level of erase current is in
the specification.
8. Click “OK” .
9. Confirm that the 50M D-ch level of erase current is in
the specification.
10. Click “OK” .
11. Set the mode of the AJ-SDX900/ D908 to
“REC-PAUSE” .
12. Confirm that the 50M C-ch level of erase current is in
the specification.
13. Click “OK” .
14. Confirm that the 50M R-ch level of erase current is in
the specification.
15. Click “OK” .
16. Confirm that the 50M L-ch level of erase current is in
the specification.
17. Click “OK” .
dB
-
∞
CONCEAL
SPEC.
AUDIO = CH1 CH2
Error = L1ch/R1ch L2ch/R2ch
0
-10
-20
-30
-40
TP5
(RFENV)
TP2
(HID)
A