akira CT-14XA9A, Руководство по обслуживанию

Страница: 43 / 76

43
Model No: CT-14XA9A
Version 1.0
(5) Electrical Characteristics
ELECTRICAL CHARACTERISTICS
(refer to the test circuit Tamb = 25°C, VS = 9V, RL= 10K Ohm, RG = 600 Ohm, all controls
flat (G = 0dB), unless otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
SUPPLY
VS
Supply Voltage 6 9 10.2 V
IS Supply Current 7 MA
SVR Ripple Rejection 60 90 dB
INPUT STAGE
RIN Input Resistance 100
K
Ohm
VCL Clipping Level THD = 0.3% 2 2.5 Vrms
SIN Input Separation
The selected input is
grounded through a
2.2m capacitor
80 100 dB
Ginmin Minimum Input Gain -1 0 1 dB
Ginman Maximum Input Gain 30 DB
Gstep Step Resolution 2 dB
VOLUME CONTROL
CRANGE Control
Range 45 47 49 dB
AVMAX Max. Attenuation 45 47 49 dB
ASTEP Step Resolution 0.5 1 1.5 dB
AV = 0 to -24dB -1.0 0 1.0 dB
EA Attenuation Set Error
AV =-24 to-47dB -1.5 0 1.5 dB
AV = 0 to -24dB 0 1 dB
ET Tracking Error
AV =-24 to -47dB 0 2 DB
VDC DC Step
adjacent attenuation
steps from 0dB to AV
max
0
0.5
3
mv
my
Amute Mute Attenuation 80 100 dB
BASS CONTROL (1)
Gb
Control Range Max. Boost/cut +12.0 +14.0 +16.0 dB
BSTEP Step Resolution 1 2 3 dB
RB
Internal Feedback
Resistance
18.75 25 31.25
K
Ohm
TREBLE CONTROL (1)
Gt
Control Range Max. Boost/cut +13.0 +14.0 +15.0 dB
STEP Step Resolution 1 2 3 dB
SPEAKER ATTENUATORS
CRANGE Control
Range 76 dB
SSTEP Step Resolution 0.5 1 1.5 dB
AV 0 to -20dB -1.5 0 1.5 dB
EA Attenuation Set Error
AV = -20 to -56dB -2 0 2 dB
VDC DC Step
adjacent attenuation
steps
0 3 My
Amute Mute Attenuation 80 100 dB
Notes:
1) The device is functionally good at Vs = 5V. a step down, on Vs, to 4V doesn't reset the device.
2) BASS and TREBLE response: The center frequency and the response quality can be chosen
by the external circuitry.