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Pga filter, Triggering, Pulse trigger – Measurement Computing WavePort rev.3.0 User Manual

Page 127: System performance, Wbk11a functions, Wbk12a/13a functions

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WavePort/V Specifications

WavePort User’s Manual

09-29-00

Specifications 10-5

System Performance:

one year, 18-28°C unless otherwise noted

Differential Nonlinearity: ±2 LSB max
Total Harmonic Distortion (10Hz-20KHz): -84dB typical
Signal to Noise and Distortion (SINAD, 10Hz-20KHz): -74dB typical
Temperature Coefficient of Accuracy (0-18 and 28-50°C):
With PGA and WBK11A:
± (.002% + 0.6 LSB)/°C typical, -10 to +10V range
With WBK12A/13A: ± (.002% + 1 LSB)/°C typical, -10 to +10V range
Input Resistance: 5M

Ω (single ended); 10MΩ (differential), in parallel with 30pF

Bias Current: <400 nA (0 to 35°C)
Common Mode Rejection: >70dB minimum; >80dB typical; dc-20KHz
Input Bandwidth: dc to 500KHz
Hostile Channel-to-channel Crosstalk (5Vrms input signal, dc-100KHz): -88dB typical
Over-Voltage Protection: ±35 V relative to analog common

PGA Filter

Filter Type: 20KHz low pass, Butterworth, 5-pole filter

WBK11A Functions

Input Voltage Ranges: Software programmable prior to a scan sequence
Aperture Uncertainty (SSH): 75ps max
Voltage Droop (SSH): 0.01mV/ms typ

WBK12A/13A Functions

Input Voltage Ranges: Software programmable prior to a scan sequence
Low Pass Filter Type: Software selectable, 8-Pole elliptic or linear phase
Anti-Aliasing Filters: Single-pole pre and post filters, automatically set depending on filter frequency selected
Low-Pass Filter Frequency Cutoff Range:

100KHz, 75KHz, 60KHz…400Hz, bypass (fc=300KHz/N where N=3 to 750

Filter Grouping: 4 Channels each in two programmable banks
Aperture Uncertainty (SSH): 75ps max
Voltage Droop (SSH): 0.01mV/ms typ

Triggering

Channel 1 Analog Trigger

Input Signal Range: -10 to +10V
Input Characteristics and Protection: Same as channel inputs
Latency:
300ns

Multi-Channel Analog Trigger (up to 72 channels):

Range: Selectable per channel to input range
Latency: 2us/channel, plus 4us maximum

TTL Trigger:

Input Signal Range: 0-5V
Input Characteristics: TTL-compatible with 10K ohm pull-up resistor
Input Protection: Zener clamped –0.7 to +5V
Latency: 300ns

Software Trigger

Latency: 100us typical

Pulse Trigger

Input Signal Range: 0-5V
Input Characteristics: 75 ohms
Input Protection:

±10V maximum

Minimum Pulse Width: 100ns
Latency: 300ns