Hioki 8841 - Analog Inputs; 8936 Analog Unit

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19.2 Analog Inputs
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16
17
18
19
5
6
7
8
9
10
11
12
13
14
A
Rs
Rin
Es
Es : Signal voltage
Rs : Signal source resistance
Rin : Input resistance
Rin
Rs+Rin
［V］
Measurement error
＝Es 1-
19.2.1 8936 ANALOG UNIT
Accuracy at 23
o
C
±
5
o
C, 35% to 80%RH after zero adjustment after 30-minute warming-up time Accuracy
guaranteed for 1 year.
Measurement ranges
5, 10, 20, 50, 100, 200, 500 mV/DIV, 1, 2, 5, 10, 20 V/DIV
DC amplitude accuracy
±
0.4%f.s.
Zero position accuracy
±
0.1%f.s.
Zero position setting range
-50 to 150% of the recording width (in full-size representation of the
measurement range)
Temperature characteristic
Gain:
±
0.025%f.s./
o
C, Zero position:
±
0.02%f.s./
o
C
Frequency characteristic
DC to 400 kHz
±
3dB
（
DC coupling
）
7 Hz to 400 kHz
±
3 dB (AC coupling, low cutoff frequency: 7 Hz
±
20%)
Noise
450
μ
Vp-p(typ), 750
μ
Vp-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,100k
±
50%(Hz) -3 dB
Input type
Unbalanced (input isolated from output)
Input resistance
1M
Ω±
1%
Input capacitance
30pF
±
10pF
（
at 100kHz
）
Input coupling
DC, GND, AC
A/D resolution
12 bits
Voltage axis resolution
80 points/DIV
Maximum sampling speed
1 MS/s (sampling period: 1
μ
s)
Input terminals
Insulated BNC terminal
Maximum input voltage
400 VDC max.
Maximum rated voltage to
earth
370 VAC/DC (between each input channel and main unit, and between
input channels)
Operational ranges for
temperature and humidity
Same as the MEMORY HiCORDER in which the 8936 is installed
Location for use
Same as the MEMORY HiCORDER in which the 8936 is installed
Temperature and humidity
ranges for storage
Temperature: -10
o
Cto50
o
C (50
｡
Fto122
｡
F)
Relative humidity: 80%RH max. (with no condensation)
19.2 Analog Inputs
Measurement Errors Caused by Signal Source Internal Resistance
･ If the signal source impedance is higher than the input impedance of the
unit, a measurement error will occur.
･ The input impedance of the 8936 ANALOG UNIT is 1 MΩ. If the signal
source impedance is 1 kΩ, an error of about 0.1% will occur.