ETAS ES930.1 - Page 94

ETAS Technical Data
ES930.1 - User Guide 94
13.9.4 Digital Input Channels ("DI" Connection)
Number of channels 4
Input voltage 0 V to 5 V
Switching thresholds TTL-compatible,
(high: 2.2 V typ., low: 1.2 V typ.)
Sampling rate 0.5 samples/s to 10 ksamples/s, addi-
tionally events; configurable per chan-
nel
Time resolution (clock rate) 15 ns (66.667 MHz)
Counter 32 bit
Pulse width 120 ns to 64.4 s (= [2
32
- 1] * 15 ns);
resolution 15
ns
Frequency range 0.02 Hz to 3 MHz
Glitch filter Digital software filter;
configurable per channel:
120 ns to 3000 ns or "Off"; resolution
15
ns
Timeout Configurable per channel:
0.1 s to 64.4 s or "Off"
Input impedance typ. 1.5 M || 50 pF
Maximum input voltage Input:
±50 V DC
Input-to-ground of voltage supply:
60 V DC / 30 V AC
Input-to-housing:
60 V DC / 30 V AC
Electrical isolation All 4 inputs together as channel group
to supply voltage and to housing
Measuring functions Event count, active time, inactive time,
status, measurement across several
cycles; parallel per channel; with over
-
flow or timeout control
Events 4 event sources per module can be
configured differently
Events for triggering a synchronous
data acquisition on the ES930.1 mod
-
ule
Events for triggering the model trigger
in the ES910 prototyping module