Tascam DA-30 - Page 34

10. Checking the level meter
1) With the unit in the state described in 3, confirm that
the “O dB” of the level meter lights and the margin
indication is 0 dB.
2) Next, when the input level is lowered by 1 dB from
this state, the ““—1 dB” of the level meter should fight.
When the margin reset button is pressed in this state,
the margin indication should be 1 dB.
3) When the level is raised by 2 dB from the state in 2),
the “OVER” should light in the level meter.
11. Headphone output
With the unit in the state described in 3, when the head-
phone volume control is turned to the maximum position,
the headphone output should be 0.9 Vrms (100 mW) or
more, (The load impedance at this time should be 8 ohm.)
12. Recording S/N ratio
1) Load a blank TY-30B tape then set the unit to the
REC monitor mode (press only the REC button).
2) When there is no input to the LINE INPUT, the S/N
value should be 85 dB or more (Fs: 48 kHz and 44.1
kHz) with respect to the reference recording output
in 3. (The 22 kHz LPF and {EC-A filter should be
IN.)
13. Distortion factor
With the unit in the state described in 3, the distortion
factor should be 0.01% or less. The distortion factor at
10 kHz should be 0.01% or less. (The 22 kHz LPF, 400
Hz HPF and 30 kHz LPF should be IN.) :
14, Recording frequency harwateciitios
With the unit in the state described in 3, when an input
signal of 20 Hz to 22 kHz is-applied, the recording frequen-
cy characteristics with respect to the 1 kHz output should
be 0 + 0.8 dB. :
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