153
Specifi cations
Frequency response
DC coupling DC to 1 Hz:
±1.0 dB
1 Hz to 12.5 kHz:
±0.5 dB
12.5 kHz to 20 kHz: ±1.0 dB
AC coupling 1 Hz:
±1.0 dB
1 Hz to 12.5 kHz:
±0.5 dB
12.5 kHz to 20 kHz: ±1.0 dB
Inter-channel phase lag
1 deg max.
(AC coupling, HPF OFF, same frequency range,
20 kHz range)
S/N ratio: (within frequency band, including overload)
80 dB or more (Input range: 10 V, 3 V, 1 V, 0.3 V)
75 dB or more
(Input range: 0.1 V)
70 dB or more
(Input range: 0.03 V)
60 dB or more (Input range: 0.01 V)
Offset
DC coupling (input shorted):
max. 2.0% of range full-scale (10 V, 3 V, 1 V)
max. 2.5% of range full-scale (0.3 V, 0.1 V)
max. 5.0% of range full-scale (0.03 V)
max. 10% of range full-scale (0.01 V)
AC coupling
max. 2.0% of range full-scale
Distortion
±0.1% or less (within frequency band)
Voice memo function 2 operation modes
A: Recording in idle state
B: Revolution speed channel is always used as voice
memo during recording
Revolution speed function is disabled while using
voice memo function
* Marker function becomes also active during
recording
Summary of Contents for DA-21
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