Measurement Computing USB-1096HFS - Manual (Page 21)

USB-1096HFS User's Guide Specifications
Note 1: The daisy chain power output option allows multiple MCC USB Series boards with a USB hub output port
to be powered from a single external power source in a daisy chain fashion.
The voltage drop between the input of one module and its daisy chain output is 0.5 V maximum. You should
plan for this voltage drop when configuring a daisy chain system to assure functionality of the last board in the
chain.
Counter section
Table 4. Counter specifications
Pin name (Note 2) CTR
Counter type Event counter
Number of channels 1
Input type TTL, rising edge triggered
Input source CTR screw terminal
Resolution 32 bits
Schmidt trigger hysteresis 20 mV to 100 mV
Input leakage current ±1 µA
Maximum input frequency 1 MHz
High pulse width 500 ns min
Low pulse width 500 ns min
Input high voltage 4.0 V min, 5.5 V absolute max
Input low voltage 1.0 V max, –0.5 V absolute min
Note 2: CTR is a Schmitt trigger input protected with a 1.5 K Ohm series resistor.
Environmental
Graph 1.Operating temperature de-rating curve (Note 3)
Power Vs. Ambient
0
1
2
3
4
5
6
7
8
0 10 15 20 25 30 35 40 45 50 55 60 65 70
Temperature (C)
Po
w
er
(
W
)
4-2