Data Translation DT9834 Series, User Manual

Page: 134 / 186

Appendix A
134
Trigger Specifications
Table 30 lists the specifications for the external A/D and D/A triggers on the DT9834 Series
modules.
Table 30: External A/D and D/A Trigger Specifications
Feature Specifications
Trigger sources
Internal:
External: Software-initiated
Software-selectable
Input type Edge-sensitive
Logic family LVTTL (+5 V tolerance)
Inputs
Input logic load:
Input termination:
High input voltage:
Low input voltage:
High input current:
Low input current: 1 LVTTL
2.2 k
Ω
pull-up to +3.3 V
2.0 V minimum
0.8 V maximum
25
μ
A maximum
–0.25 mA maximum
Minimum pulse width
High:
Low: 25 ns
25 ns
Triggering modes
Single scan:
Continuous scan:
Triggered scan: Yes
Yes
Yes