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_ [NORMAL]
1. Set the tape selector switch to NORMAL.
2. Insert the AC-212 test tape in the cassette holder and set the
recording conditions. (Set the monitor switch to SOURCE) and
attenuate from 1kHz, 580mV to — 25dB on Line Out. (The direc-
tion included in parenthesis is applicable only for the PMD221.)
3. Rewind and play the tape back, then set RL12 so that the level
of 1kHz is brought within + 0.5dB.
4. When playing the tape back, set RKO1 so that the level of 1kHz
is the same. as that on the Rec Monitor.
Change the Monitor Switch to TAPE SOURCE, and set RKO1 so
that the level of 1kHz is the same. as that before.
5. After making these adjustments, record and play back at 1kHz,
10kHz, 12.5kHz. Make sure results comply with the following
diagram.
NR" OFF"
5dB
250Hz
(PMD221) 10KHz
are
(PMD201) 8KHz
12.5KHz
[CrO2]}
1. Set the tape selector switch to CrO2.
2. Insert the AC-512 test tape in the cassette holder and set the
recording conditions. Attenuate from 580mV to — 25dB on Line
Out with the attenuator and record at 1kHz, 10kHz, and 12.5kHz
on mn unrecorded section of the tape.
3. Record and playback at 1kHz, 10kHz, and 12.5kHz.
Make sure results comply with the following diagram.
NR "OFF"
5dB
aeOre
(PMD221) 10KHz
40Hz
(PMD201) 8KHz
1 2:5KHz
Moo}
[METAL]
1. Adjust the Tape Selector Switch to METAL.
2. Load
the test
tape
AC-712
into cassette
holder.
Perform
measurements as with CrO2, and make sure they conform with
the Chart.
NR" OFF"
5dB
250Hz
(PMD221) 10KHz
H
aoe
(PMD201) 8KHz
12-5KHz
5.8
Direct Telephone Output Measurement
1. Play the test Tape MTT-112B back.
2. Perform measurements of the output voltage on the Direct TEL
Jack, when the Monitor volume is at the maximum setting.
Mode:
Playback
Test Tape
VIVM
MTT-112B
Direct TEL Jack
5.9
Direct Telephone Input Measurement
1. Set the recording conditions, and adjust the Monitor Switch to
SOURCE.
2. Set the Rec Level to maximum, the Rec Mode to MANUAL.
3. Add a 1kHz signal to Direct TEL Jack, and set the input signal
to attenuate from 580mvV to — 3dB on Line Output.
Direct TEL Jack
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