Confidence Pb Envelope Level Adjustment - Panasonic AJ-D400P Service Manual

8-7. Rec. Curr. & Freq. Adj. (Auto)
BOARD RF
PB ENV, HID R (50 W terminated)
TEST
ADJUST VR400 (PB L), VR401 (PB R), EVR
MODE PLAY, REC
TAPE Blank Tape
M.EQ Oscilloscope, Spectrum Analyzer
1. Open the MAIN MENU according to the same pro-
cedure as the PB Equalizer Adjustment.
2. Select 2. REC Adjustment in the MAIN MENU.
3. PC asks whether download the VT. Data from the
VTR or not.
4. Select [Y] so that the VT. Adjustment data is saved
in to the PC.
5. Press the F8 to select the AUTO.
6. Select 1. Adjust start in the sub menu.
7. Insert the alignment tape and playback the colour
bar portion according to the instruction on the dis-
play.
8. After memorizing the playback data, insert a blank
tape and start a recording according to the instruc-
tion on the display.
9. During the adjustment, don't touch the VT. and PC
adjustment system.
10. During the adjustment, audio error rate in not dis-
played.
11. Rewind the recorded tape which was recorded on
the blank tape and playback the recorded portion
according to the instruction on the display.
12. The error rate is measured and displayed.
13. Confirm that the data A and B are green colour.
8-8. Confidence PB Envelope Level
Adjustment
BOARD RF
SPEC. A = 100 ± 10mV
PB ENV, HSW (B.E.R. Counter)
TEST
(50 W terminated)
ADJUST VR400 (PB L), VR401 (PB R)
INPUT CAMERA Color Bar
MODE REC
TAPE Blank Tape
M.EQ Oscilloscope
1. Place the unit in the confidence PB mode.
2. Adjust the VR400 and 401 so that the level A is
within specification.