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19.2 Analog Inputs
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19.2.5 8946 4ch ANALOG UNIT
Number of channels
4 channels
Measurement range
10, 20, 50, 100, 200, 500 mV/DIV, 1, 2 V/DIV
DC amplitude accuracy ±0.5%f.s.
Zero position setting range
-50 to 150% of the recording width (in full-size representation of the
measurement range)
Zero position accuracy ±0.15%f.s. after zero-adjustment
Temperature characteristic
Gain: ±0.05%f.s./
o
C
Zero position: ±0.02%f.s./
o
C after zero-adjustment
Frequency characteristic
DC to 100 kHz
±3dB
Noise
1mVp-p（typ）,2mVp-p（max.） (sensitivity range, with input shorted)
Common mode rejection
ratio
80 dB min. (at 50/60 Hz and with signal source resistance 100 Ω max.)
Low-pass filter
OFF,5,500,5k,50k±50%(Hz) -3 dB
Input type
Unbalanced input (isolated from output)
Input resistance and
capacitance
1MΩ±1% 15 pF±10pF（at 100 kHz）
Input coupling
DC, GND
A/D resolution
12 bits
Maximum sampling speed
1 MS/s (sampling period: 1μs)
Input terminals
BNC terminal
Maximum input voltage
30 Vrms or 60 VDC
Maximum rated voltage to
earth
30 Vrms or 60 VDC (between input channels and unit, between input
channels)
Operational ranges for
temperature and humidity
Same as the MEMORY HiCORDER in which the 8946 is installed
Location for use
Same as the MEMORY HiCORDER in which the 8946 is installed
Temperature and humidity
ranges for storage
Temperature: -10 to 50
o
C (14
｡
Fto122
｡
F)
Relative humidity: 80%RH or less (with no condensation)
Effect of radiated radio-
frequency electromagnetic
field
±2%f.s. at 3V/m
Dielectric strength
Between 8946 and main unit, between 8946 and input unit: 330 VAC for a
minute
Dimensions / Mass
Approx. 170W×20H×148.5D mm (6.69"W×0.79"H×5.832"D)
Approx. 310 g (10.93 oz)
Standard Applying
EMC EN61326, Class A
Safety EN61010
Pollution Degree 2, measurement categoryⅠ
(anticipated transient overvoltage 330 V)
Accuracy at 23
o
C
±
5
o
C, 35% to 80%RH after auto-balancing,
after 60-minutes warming-up time. Accuracy guaranteed for 1 year
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