Marantz 5010 - Page 18

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13. Playback Output Level Measurement
(at LINE OUT)
SET UP
1. Power voltage:- 50 or 60Hz AC voltage rated
for the unit to be used in a market country.
2. TAPE selector switch position: NORMAL.
3. Load:- Measuring instrument input im-
pedance.
4. Output terminal:- LINE OUT.
5. Test tape used:- MTT-112.,
PROCEDURES
1. Play the test tape back in the normal
playback state. Read the VTVM indication.
2. Proceed both for the right and left channels
in the same manner.
Mode: playback
Tone: 333 Hz
Line Our
STANDARD
Within 800mV +#3aB.
14, Playback Signal-to-Noise Ratio Measurement
SET UP
1. Power voltage:- 50 or GOHz AC voltage rated
for the unit to be used in a market country.
Load:- Measuring instrument input im-
pedance.
Measuring output terminal:- LINE OUT.
Test tape used:- MT T-112 (333Hz tone).
TAPE selector switch position:- NORMAL,
CrO, and Fe-Cr.
PROCEDURES
1. Load the test tape MTT-112. Set up the tape
deck to the normal playback state with the
use of the I.E.C. A-Curve filter.
2. Read playback output as aOdB reference.
Then playback blank tape and note the
output level drop in dB.
3. Proceed both for the right and left channels
in the same manner.
4. Repeat the above measurement for each
TAPE selector switch position.
Mode: playback
Tone 333Hz
__VTVM
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Line Out
STANDARD
Greater than 52dB.
CAUTIONS
1. Arrange the tape deck power cord for
minimum hum component.
2. Effect by induction noises should be
minimized for the measurement.
3. When playing the standard reference {evel
tape MTJT-112 back, the VU meter indica-
tion is close to +2.5 VU and is used as the
reference level for the signal-to-noise ratio
measurement.
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