Analog Output; Timebase; Digital Input/Output - Measurement Computing USB-234 User Manual

USB-234 User's Guide

Analog output

Parameter
Resolution
Output range
Number of channels
Update rate
Trigger sources
Output current drive
Short circuit current
Slew rate
Output impedance
Absolute accuracy (no load)
INL
DNL
Power-on state
Startup glitch

Timebase

The following specifications apply to hardware-paced analog input and analog output sampling accuracy.
Parameter
Timebase frequency
Timebase accuracy
Timing resolution

Digital input/output

Parameter
Compatibility
Number of channels
Configuration
Pull-down resistor
Absolute maximum voltage
range
Table 3. Analog output specifications
Condition
Hardware paced
Typical at full scale
Maximum over temperature,
full scale
Specification
80 MHz
±100 ppm
12.5 ns
Table 4. Digital I/O specifications
Specification
LVTTL, 3.3 V LVCMOS
8 (DIO0 through DIO7)
Each bit can be configured as input (power on default) or output
47.5 kΩ to digital ground (GND).
–0.3 V to 5 V with respect to digital ground (GND)
23
Specification
16 bits, 1 in 65,536
±10 V
2
5 kS/s simultaneous per channel max, hardware-paced
Software, TRIG
±5 mA
±11 mA
3 V/µs
0.2 Ω
8.6 mV
32 mV
±4 LSB
16 bits no missing codes
0 V
–7 V for 10 µs
Specifications