157
Specifi cations
Store settings
Five settings are stored in internal memory
Startup fi le is available in the SD memory card
USB
Mass storage class
Connected to a computer as a storage device, and
recognized as a removable disk
Power supply section
Power supply
Batteries or AC adapter (NC-98C)
Car battery adapter (CC-82)
AC adapter
Rated input: 100 V to 240 V AC, 50/60 Hz, 0.4 A
Rated output: 5.9 V DC, 2 A, 11.8 W
Batteries
Four IEC LR6, size AA batteries (Alkaline batteries
or Nickel metal-hydride batteries [Ni-MH])
External DC
5 V to 20 V
Battery life (representative value)
Temperature 23°C, backlight off, monitor out off, 32
GB card
Frequency
range
Number of
channels
CCLD ON
CCLD OFF
Batteries type
20 kHz
4
Approx. 4.5 hours
Approx. 8 hours
Alkaline
20 kHz
1
Approx. 7.5 hours
Approx. 10 hours
Alkaline
20 kHz
4
Approx. 7 hours
Approx. 10 hours
Ni-MH
20 kHz
1
Approx. 11 hours
Approx. 12 hours
Ni-MH
* The capacity of the used Ni-MH battery is 2450 mAh
* Battery life may differ signifi cantly, depending on ambient tem-
perature, unit settings, and brand and type of batteries and SD
memory card
Inter-unit synchronization
Synchronized operation of two units allows simulta-
neous waveform level recording in up to 8 channels.
Other specifi cations
Dimensions
Approx. 140 mm (H) × 175 mm (W) × 45 mm (D)
Mass
450 g (not including batteries)
Fastening holes
1/4-20UNC (inch) screw hole on bottom panel
Summary of Contents for DA-21
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