|
Counters and Timers Selection Guide
These charts are intended as selection guides only. For complete and
precise specifications, consult the data sheet for each model.
|
Feature |
Model |
|
871 |
974 |
994 |
995 |
996 |
| Timer (T)
and/or Counter (C) |
Dual T and C |
Quad T and C |
Dual T and C |
Dual C |
T and C |
| Number of
Counters |
2 or 1 |
3 or 4 |
2 |
2 |
1 |
| Number of
Timers |
0 or 1 |
1 or 0 |
1 |
0 |
1 |
| Max Rate
(MHz) |
25 |
100 |
100 |
100 |
100 |
| Positive
Input |
Y |
Y |
Y |
Y |
Y |
| Negative
Input |
Y |
Y |
Y |
Y |
Y |
|
Discriminator |
Y |
Y |
Y |
Y |
Y |
| Digits
Displayed |
8 |
8 |
8 |
8 |
8 |
| Time Base |
1 MHz |
1 MHz |
10 MHz |
|
10 MHz |
| Gate |
Y |
Y |
Y |
Y |
Y |
| +6 V
Required |
N |
Y |
Y* |
Y* |
Y |
| Computer
Controllable |
N |
Y |
Opt |
Opt |
Opt |
| IEEE-488 |
N |
Y |
Opt |
Opt |
Opt |
| RS-232-C (20
mA) |
N |
Y |
Opt |
Opt |
Opt |
| NIM Width |
2 |
2 |
2 |
2 |
1 |
*Internal +6 V option available (Option 99X-4) |
