User manual

DBK18, pg. 6 918894 DBK Option Cards and Modules
DBK18 – Specifications
Name/Function: Low-Pass Filter Card
Number of Channels: 4
Input Connections: 4 BNC connectors
Output Connector: DB37 male, connects to P1 with a CA-37-x cable
Number of Cards Addressable: 64
Input Type: Differential
Voltage Input Ranges:
0 to ±5000 mVDC
0 to ±500 mVDC
0 to ±50 mVDC
0 to ±25 mVDC
0 to ±10 mVDC
Input Amplifier Slew Rate: 12 V/µs minimum
Input Gains: ×1, ×10, ×100, ×200, x500 and user-set
Input Offset Voltage: 500 µV + 5000/G maximum (nullable)
Input Offset Drift: ±5 + 100/G µV/°C maximum
Input Bias Current: 100 pA maximum
Input Offset Currents: 50 pA maximum
Input Impedance: 5 × 10
12
parallel with 6 pF
Switchable Bias Resistors: 100 KΩ each to analog common
Gain Errors:
0.04% @ ×1
0.1% @ ×10
0.2% @ ×100
0.4% @ ×200
1.0% @ ×500
Gain vs Temperature:
×1 @ ±20 ppm/°C
×10 @ ±20 ppm/°C
×100 @ ±40 ppm/°C
×200 @ ±60 ppm/°C
×500 @ ±100 ppm/°C
Non-Linearity:
×1 to ±0.015 % full-scale
×10 to ±0.015 % full-scale
×100 to ±0.025 % full-scale
×200 to ±0.025 % full-scale
×500 to ±0.045 % full-scale
Common-Mode Rejection:
70 dB minimum @ ×1
87 dB minimum @ ×10
100 dB minimum @ ×100
100 dB minimum @ ×200
100 dB minimum @ ×500
Active Filter Device: UAF42 (Burr-Brown)
Number of Poles/Filter: 3
Types of Filters: Bessel, Butterworth, Chebyshev
Frequency Range:
0.1 Hz to 20 kHz
The frequency is set by the installation of
4-6 resistors, and/or capacitors, in sockets.
Default Frequency:
1 Hz
Other frequencies may be implemented by
soldering resistors, and/or capacitors, to
locations on the 4 blank plug-in headers.
Values for common frequencies and their
component values are provided with the
blank headers.