Wbk14 - specifications, Fk c v icc ib = − 2 – Measurement Computing WaveBook rev.3.0 User Manual
Page 48
3-16 WBK14, WBK Expansion Options
WaveBook User’s Manual
Frequency Response to 5% of
Maximum Output Signal Amplitude
Drive Current
(mA)
Cable Length
@30 pF/ft (Ft)
± 1 V
± 5 V
2
10
185 kHz
37 kHz
2
100
18.5 kHz
3.7 kHz
2
1000
1.85 kHz
370 Hz
4
10
550 kHz
110 kHz
4
100
55 kHz
11 kHz
4
1000
5.5 kHz
1.1 kHz
f
K
C
V
Icc Ib
=
−
2
π
Where:
f = Maximum frequency in Hz
K = 3.45 ×10
9
. K is the scale factor to convert Farads to picoFarads and Amperes to milliAmperes
and a factor to allow cable capacitance to charge to 95% of the final charge.
C = Cable capacitance in picoFarads
V = Maximum peak measured voltage from sensor in volts
Icc = Constant current from current source in mA
Ib = Current required to bias the internal electronics, typically 1 mA
WBK14 - Specifications
Specifications are provided in Appendix A.