Measurement Computing USB-1208HS-4AO - Manual (Page 14)

USB-1208HS-4AO User's Guide Functional Details
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Figure 9. Location of W34 jumper (default pull-down setting shown)
Figure 10. Pull-down and pull-up configurations
1. Replace the top section of the case, and then fasten it to the bottom section with the four screws.
For more information on digital signal connections
For general information regarding digital signal connections and digital I/O techniques, refer to the Guide to
DAQ Signal Connections (available on our web site at
www.mccdaq.com/signals/signals.pdf ).
Counter input
CTR0 and CTR1 provide connections to each 32-bit counter input channel. Each counter can count frequencies
of up to 20 MHz.
Timer output
Use the TMR terminal to connect to the pulse width modulation (PWM) timer output. You can set the following
timer output parameters through software:
 pulse frequency
 duty cycle (pulse width divided by the pulse period)
 number of pulses to generate
 time delay before starting the timer output after it's enabled
 resting state of the output (idle high or idle low)
The timer can generate a pulse output with a programmable frequency range of 0.00931 Hz up to 20 MHz.