HBM Genesis GEN5i User Manual page 367

Digital Event/Timer/Counter
Digital input events
Over voltage protection
Minimum pulse width
Digital output events
Digital output event user selections
Timer/Counter
Timer-Counter modes
Uni- and bi-directional count
Maximum input frequency
Maximum count value
Bi-directional quadrature count
Maximum input frequency
Maximum count value
I2679-4.0 en
(1)
16 per card
Levels TTL input levels, user programmable invert
Inputs 1 pin per input, some pins are shared with Timer/Counter inputs
± 30 V DC continuously
100 ns
Maximum frequency 5 MHz
2 per card
Levels TTL output levels, short circuit protected
Output event 1 User selectable: Trigger, Alarm, set High or Low
Output event 2 User selectable: Recording active, set High or Low
Trigger 1 high pulse per trigger (on every channel trigger of this card only)
12.8 µs minimum pulse width
200 µs ± 1 µs ± 1 sample period pulse delay
Alarm High when alarm condition is activated, low when not activated (alarm conditions of this
card only)
200 µs ± 1 µs ± 1 sample period alarm event delay
Recording active High when recording, low when in idle or pause mode
Recording active output delay 450 ns
Set High or Low Output set High or Low; can be controlled by Custom Software Interface (CSI) extensions;
delay depending on specific software implementation
2 per card; only available in 18 bit mode
Levels TTL input levels
Inputs All pins are shared with digital event inputs
Uni- and bi-directional count
Bi-directional quadrature count
Uni- and bi-directional frequency/RPM measurement
Inputs 3 pins; signal, reset and direction (only used in bidirectional count)
5 MHz
0 to 2
Reset input User selectable level invert
Reset options Manual: On user request by software command
Start recording: Count value set to 0 at start of recording
First reset pulse: After start of recording the first reset pulse sets counter value to 0. Next
reset pulses are ignored.
Each reset pulse: On each external reset pulse the counter value is reset to 0.
Direction input
Only used when in bi-directional count
Low: increment counter
High: decrement counter
Inputs 3 pins; signal, direction and reset
2 MHz, minimum high or low time 200 ns. Minimum phase difference between signal and
direction 100 ns.
Accuracy Single, dual and quad precision
-2
31
to +2
Reset input User selectable level invert
Reset options Manual: On user request by software command
Start recording: Count value set to 0 at start of recording
First reset pulse: After start of recording the first reset pulse sets counter value to 0. Next
reset pulses are ignored.
Each reset pulse: On each external reset pulse the counter value is reset to 0.
; unidirectional count. -2
31 31
to +2
31
31
; bidirectional count
GEN5i
367