Sony TC-366 - Page 33

(2) Thread a blank tape.
(3) Deliver a 1 kHz signal of -10dB (0.24V)
into the AUX INput jack and record the
signal on the blank tape.
(4) Be sure that the reading on the distortion
meter is less than 1.5%.
AF tape, blank
osc jer meter,
P.8. Amp.
AUX distortion
1 kHz, -10dB
LINE OUT
Fig. 12-27 Distortion measurement setup
12-20. Cross-talk Measurement
(between channels)
Connection:
As shown in Fig. 12-28.
Switch Setting:
MONITOR switch ......... TAPE
VR Setting:
AUX VOLUME.............. indicated on page 25
Procedures:
(1) Thread a blank tape.
(2) Place the machine in stereo-record mode.
(3) Deliver a 1 kHz signal of +10dB (2.5V)
into the L-CH AUX INput jack.
(4) Be sure that the ratio of the L-CH LINE
OUTPUT to the R-CH LINE OUTPUT on
the VTVM is more than 45 dB.
Note: Take impedance-matching correctly for the
band-pass filter.
REC Amp.
i, ©Tat6
Os e, P.B. Amp. 1kHz
4 the, +1008 CY =
LINE OUT
Fig. 12-28 Cross-talk measurement setup
(between channels)
tape, blank VTVM
12-21. Cross-talk Measurement
(between tracks)
Connection:
As shown in Fig. 12-29.
Switch Setting:
MONITOR switch ......... TAPE
VR Setting:
AUX VOLUME.............. indicated on page 25
Procedures:
(1) Thread a blank tape.
(2) Place the machine in stereo-record mode.
(3) Deliver a 1kHz signal of +10dB (2.5V)
into the L-CH & R-CH AUX INput jacks
and record the signal on the blank tape.
(4) Playback the tape and memorize the L-CH
or R-CH VTVM reading, and then take up
the tape.
(5S) Turn the recorded tape upside down and put
it on the supply reel table.
(6) Playback the recorded portion of the tape
and memorize the L-CH or the R-CH
VTVM reading.
(7) Be sure that the ratio of the VT VM reading
obtained in procedure (4) to the VIVM
reading obtained in procedure (6) is more
than 65 dB.
Note: Take impedance-matching correctly for the
band-pass filter.
REC Amp.
tape, blank VTVM
AF
Osc
AUX
1kHz, +10dB
LINE OUT
Fig. 12-29 Cross-talk measurement setup
(between tracks)
Fig. 12-30 Recorded tape