Level Calibration - Nakamichi 700 Operating Instructions Manual

Level Calibration

Dolby NR Level Calibration
The Dolby NR standard level (200 nW/m)
of the Nakamichi 700 is set to 0 dB
Particularly, when you record with Dolby
NR "in", adjust the 0dB signal of the built in
400 Hz test tone to 0dB according to type of
the tapes to be used
Open the Adjustment Lid by pushing the Cal
Button positioned next to the Eject button
Set the "Dolby NR" Switch to "in"
Set the "Monitor" Switch to "Source"
Set the "Test Tone Switch" to "on"
Level Meters indicate 0 dB.
6
If away from 0 dB, adjust the Test Tone
Level to obtain 0 dB.
According to each tape to be recorded,
set the Tape Selector Switch to "EX" or
"SX"
Start the tape and record 400HZ
Set the "Monitor" Switch to "Tape"
If the levels are not within 1 dB of "0
dB", adjust the appropriate level Calibration
Controls (Left or Right, EX or SX) clock
wise or counter c l o c k w i s e (Fig A or Fig B)
to obtain a 0 dB reading on both meters
Note
The recorder must be in the record mode
with the "Monitor" switch in the "Tape"
position in order to perform this calibration