User Manual

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19.2 Analog Inputs
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1
9.2.5 8940 F/V UNIT
A/D resolution 12 bit
Vertical axis resolution 80 LSB/DIV
Measurement function Frequency measurement, Count, Duty, Voltage measurement,Current
measurement
Maximum sampling speed 1μs
Low-pass filter OFF, 5, 500, 5 k, 100 k±50%（Hz）-3 dB
Input type DC, GND, AC
(Fixed DC coupling except voltage and current measurement )
Pull up ON/OFF (Constant OFF in current measurement)
Pull up resistance: 10 kΩ
BNC connector Input resistance: 1 MΩ±1% (at pull-up OFF)
Input capacitance: 60 pF±20 pF (at 100 kHz)
Input type: Unbalanced (for Voltage, Frequency, Count, Duty)
Note: With the 3273, 3273-50
*1
, the BNC connector and sensor connector
are used together. GND is common with the MEMORY HiCORDER in
which the unit is installed.
Sensor connector terminal
(Current measurement)
Possible to connect 6 channel
Note: With the 3273, 3273-50
*1
, the BNC connector and sensor connector
are used together. GND is common with the MEMORY HiCORDER in
which the unit is installed.
Maximum input voltage 30 V rms or 60 V DC
Maximum rated voltage to
earth
30 V rms or 60 V DC (BNC)
Operational ranges for
temperature and humidity
Same as the Memory HiCorder in which the 8940 is installed
Operating place Same as the Memory HiCorder in which the 8940 is installed
Temperature and humidity
ranges for storage
Temperature: -10℃ to 50℃ (14 F to 122 F)
Relative humidity: 80%RH maximum (with no condensation)
Effect of radiated
radio-frequency
electromagnetic field
±5% f.s. at 3 V/m
Dimensions Approx. 170 W × 20 H × 148.5 D mm, 6.69" W×0.79" H×5.85" D
(excluding projections)
Mass Approx. 300 g , (10.6 oz)
Standard Applying EMC
Safet
y
EN 61326, ClassA
EN 61010
Pollution Degree 2, measurement category
(anticipated transient overvoltage 330 V)
Options 9318 CONVERSION CABLE（9270,9271,9272,9277,9278,9279）
9319 CONVERSION CABLE（3273,3273-50
*1
）
Accuracy at 23℃±5℃, 35% to 85%RH after zero adjustment after 60-minute warming-up time
Accuracy guaranteed for 1 year.
*1:When using the Model 3273-50 with the 8940, bear in mind that the
maximum input of the 3273-50 is 15 Arms.