User Manual

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19.2 Analog Inputs
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1
9.2.6 8947 CHARGE UNIT
Number of input channels 2 channels (switchable)
Any of the following can be selected: Charge input, input from preamp,
voltage input or individual channels
Input type Unbalanced input (floating between inputs, floating between input and
unit ground, common ground between voltage input and charge input)
Zero position setting range -5 to 150%f.s. (when vertical axis (×1) display)
Common mode rejection ratio 80 dB minimum (at 50/60 Hz and with signal source resistance 100 Ω
maximum)
Anti-aliasing filter Cutoff frequency (fc) 20, 40, 80, 200, 400, 800, 2 k, 4 k, 8 k, 20 k, 40 k
(Hz) (ON/OFF, auto setting corresponding to the time axis and frequency
axis range) Attenuation: -66 dB min at 1.5 fc
Maximum sampling speed 1 MS/s
A/D resolution 12 bits
Operational ranges for
temperature and humidity
Temperature: -5℃ to 40℃ (23
｡
F to 104
｡
F)
Relative humidity: 80%RH maximum
(Same as the MEMORY HiCORDER in which the 8947 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)
Location for use Same as the MEMORY HiCORDER in which the 8947 is installed
Effect of radiated
radio-frequency
electromagnetic field
±10% f.s. at 3 V/m (5 mV/DIV range)
Dimensions Approx. 170 W×20 H×148.5 D mm, 6.69" W×0.79" H×5.85" D
(excluding projections)
Mass Approx. 310 g, (10.9 oz)
Standard Applying EMC EN 61326, Class A
Safety EN 61010
Pollution Degree 2, measurement category
(anticipated transient overvoltage 330 V)
Accuracy at 23℃±5℃, 35% to 85%RH after zero adjustment after 60-minute warming-up time
Accuracy guaranteed for 1 year.