1-1
TECHNICAL SPECIFICATION
General
Dimensions (W x H x D)
: 130.4 x 14.5 x 135.5mm
Weight without batteries
: 125g
Power supply modes
DC-in socket
: 2.9..7.0V
Primary batteries (battery box)
: 1.6..3.6V
Rechargeable batteries (AY3364) : 1.6..3.6V
Voltage protection DC-in socket
: -14.5..+14.5V
Battery lifetime
Battery level detection
Charge section (not on all versions)
Charge current
: 280mA ±10%
Charge time for 80% AY3364
: 4.0h nom.
Charge time for 100% AY3364
: 6.0h nom.
Max. charge time (µP controlled) : 7h
Temperature protection
: 50°C ±5°C
Current consumption
1) off-phase means servos switched off and audio data is played back from
ESP memory
Shock resistance (ESP=off)
+X/-X direction
:
≥
2.5g
+Y/-Y direction
:
≥
2.5g
+Z/-Z direction
:
≥
2.0g
Headphone out (measured with 16
Ω
load, DBB/ESP=off)
Output power (THD
≤
10%)
/17 version only
: 2x7mW (+1/-3dB)
all other versions
: 2x3mW (+1/-3dB)
Frequency response (1mW)
: 100Hz-20kHz within 6dB
S/N ratio (unwght)
:
≥
80dB (83dB typ.)
S/N ratio (A-wght)
:
≥
82dB (85dB typ.)
THD+N (1kHz, 1mW)
:
≤
1% (0.2% typ.)
Channel crosstalk (1kHz, no load) :
≤
-24dB (-44dB typ.)
Channel unbalance (-40dB)
:
≤
5dB
Volume attenuation (1kHz)
:
≥
60dB
Sound presets
Laser
Output power
: <5mW (3mW typ.)
Wavelength
: 780nm
Measurement setup
Use Audio Signal disc SBC429
4822 397 30184
Low pass filter
DUT
S/N and distortion meter
L
R
i.e. Sennheiser UPM550
with FF-filter
Level meter
i.e. Sound Technology ST1700B
i.e. 4822 395 30204
22kHz
13th order
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