Keysight Technologies USB data capturing module U2331A Input: 3 MS/s, output: 1 MS/s U2331A OPT 902 + ABD Manuale Utente

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U2331A OPT 902 + ABD
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U2300A Series DAQ Service Guide
1
Characteristics and Specifications
Digital I/O
Model Number
U2355A | U2356A | U2331A
Number of bits
 24-bit programmable input/output
Compatibility
 TTL
Input voltage
 V
IL
 = 0.7 V max, I
IL
 = 10 µA max 
V
IH
 = 2.0 V min, I
IH
 = 10 µA max
Input voltage range
–0.5 V to +5.5 V
Output voltage
V
OL
 = 0.45 V max, I
OL 
= 8 mA max
V
OH
 = 2.4 V min, I
OH
 = 400 µA max
General Purpose Digital Counter
Model Number
U2355A | U2356A | U2331A
Maximum count
(2³¹-1) bits
Number of channels
 Two independent up/down counter
Compatibility
 TTL
Clock source
Internal or external
Base clock available
 48 MHz
Maximum clock source frequency
12 MHz
Input frequency range
0.1 Hz to 6 MHz at 50% duty cycle
Pulse width measurement range
0.167 µs to 178.956 s
Analog trigger
Model Number
U2355A | U2356A | U2331A
Trigger source
All analog input channels, External analog trigger (EXTA_TRIG)
Trigger level
±Full Scale for internal; ±10 V for external
Trigger conditions
Above high, below low and window (software selectable)
Trigger level resolution
8 Bits
Bandwidth 400 
kHz
Input Impedance for EXTA_TRIG
20 k
Ω
Coupling
DC
Overvoltage Protection
Continuous for ±35 V maximum