Kenwood VT-181, Service Manual

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VT-181/VT-181E
3
SPECIFICATIONS
Measurable Voltage
dB
dBm
Error
Frequency response
Input impedance
Durable input voltage
Gain
Output voltage
Output resistance
Frequency response
Distortion
Signal to noise ratio
1mV to 300mV in 12 ranges:1,3,
10,30,100,300mV,1,3,10,30,
100,300V full scale.
-80 to +50dB(0dB=1V)
-80 to +52dBm(0dBm=1mW at 600
Ω
)
500V (DC +AC peak) 1V to 300V range
100V (DC +AC peak) 1mV to 300mV range
Within specifications
temp./ hum.range
Full operation temp./
hum.range
Line voltage
Power consumption
Dimensions
WXHXD(mm)
Net Weight
Accessories
Power cable
Input cable
Replacement fuse
Instruction manual
Adjust driver
Less than 1% at full scale (Rated by signal-noise
ratio in 1mV and 1V range)
Over 40dB at full scale
Within
±
3% of full scale at 1kHz
0.3mV to 100mV in 12 ranges:0.3,
1,3,10,30,100,300mV,1,3,10,
30,100V full scale.
-90 to +40dB(0dB=1V)
-90 to +42dBm(0dBm=1mW at 600
Ω
)
500V (DC +AC peak) 1V to 300mV range
100V (DC +AC peak) 0.3mV to 300mV range
Less than 1% at full scale (Rated by signal-
noise ratio in 0.3mV,1mV and 1V ranges)
Over 30dB at 0.3mV range
Power Supply Section
Meter Section
VT-181E VT-181 Item
Environmental
Indoor Use Only Altitude up to 2000m OVERVOLTAGE CATEGORY
¿
POLLUTION DEGREE2
Amplifier Section
±
10% at 5Hz to 1Mhz,
±
5% at 10Hz to 500kHz and
±
2% at 20Hz to 100kHz as reference to 1kHz response.
10M
Ω ±
5%, with less than 50pF parallel capacitance.
60dB
±
1dB(Approx.70dB)
1Vrms ±20%
600
Ω
±20% at 1kHz
Within±3dB at 5Hz to 500kHz
10 to 40˚C / 80% RH or less
0 to 50˚C / 80% RH or less
100/120/220/230/ Vac
±
10% 50/60Hz
Max.6.9W
128(128)X190(210)X239(259)
Value in ( ) include protrusions
2.8kg
1pc
CA-41p 1pc
1pc
1copy
1pc
Stability
Residual voltage Less than 20uV with input shorted on 1mV range
Less than 30uV with input shorted on 0.3mV
range
Within ±0.5% of full scale for ±10 line voltage fluctuation
VT-181/VT-181E(K) INT 98.4.9 10:31 AM y [ W 6