Sony Professional U-matic SP BVU-950 Maintenance Manual page 174

11-20. REC BIAS CURRENT LEVEL ADJUSTMENT (SP)
machine conditions
for adjustment
spec.
adjustment
* AUDIO IN connector: 1kHz/
7kHz, — 80dBm
-Set the KSP cassette tape.
¢ Play back the self recorded tape.
LINE OUT connector
(terminated by 6000)
1kHz =0(REF)
7kHz =O0+ 0.5dB
CH-1: @RV103/AU-85(C-1)
CH-2: @RV105/AU-85(E-1)
REC mode — adj.
PB mode — check
11-21. REC BIAS CURRENT LEVEL ADJUSTMENT (CONVENTIONAL)
machine conditions
for adjustment
spec.
adjustment
*AUDIO IN connector: 1kHz/
7kHz, — 80dBm
«Play back the self recorded tape.
LINE OUT connector
(terminated by 60002)
1kHz =O (REF)
7kHz =0 +0.5dB
CH-1: @RV104/AU-85(C-1)
CH-2: @RV106/AU-85(E-1)
REC mode — adj.
PB mode — check
11-22. REC FREQUENCY RESPONSE ADJUSTMENT (SP)
machine conditions
for adjustment spec. adjustment
*AUDIO IN connector: 40Hz to | LINE OUT connector 7kHz
15kHz, — 80dBm (terminated by 6000) CH-1: @RV103/AU-85(C-1)
CH-2: @RV105/AU-85(E-1)
*Set the KSP cassette tape.
10kHz
*Play back the self recorded 40Hz = —1 Re dB CH-1: @LV102/AU-83(B-5)
tape. " CH-2: @LV203/AU-84(F-2)
90Hz = 0 + 1.5dB
1kHz = O (REF) 15kHz
SkHz = 0 = 0.508 CH-1: @RV11/AU-83(B-6)
7kHz = 0 = 0.5dB CH-2: @RV11/AU-84(E-1)
10kHz = O + 0.5dB
15kHz = 0 + 0.5dB
REC mode - adj.
PB mode — check
11-9