L-Card E20-10, Руководство пользователя

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E20-10 User Manual
5.2.2.1. S yn chron ization modes
Possible synchronization modes for E20-10 are given in tables below. Take note of
information about what exactly revisions of E20-10 one mode is implemented.
Table5-1. Modes of synchronization on ADC conversion frequency
(on SYNC signal)
Synchronization
on ADC
conversion
frequency
Implemented
in revisions
of E20-10
Notes
"internal" A, V
ADC conversion frequency:
n
30
MHz,
where, n=3,4,5,…,29,30.
SYNC line is not used (transfered to Z-state)
"internal-master" A, V SYNC line is configurated to output: signal with on-off
time 2 and ADC conversion frequency is generated:
n
30
MHz, where, n=3,4,5,…,29,30.
ADC data physical sampling moment corresponds to
SYNC output signal edge
"external - slave" A, V SYNC line is used "on input" for synchronization from
TTL-output of external device: signal with frequency of
from 1.0 to 10 MHz, with on-off time 2 (meander) is
required
Table5-2. Acquisition start synchronization modes (on START signal)
Data acquisition start
synchronization
Implemented
in version
E20-10
Notes
"software":
- without additional start
conditions
- with additional start
conditions,
table 5-3
A, V
V Software asynchronous start. Stopping possible
conditions –
table 5-5
START line is in Z-state
"software – master on
START signal":
- without additional start
conditions
- with additional start
conditions.
table 5-3
A, V
V START signal of master E20-10 is fed by active
level "1" (connected slave E20-10 shall be in "on
START signal edge" condition). Stopping possible
conditions –
table 5-5
START line is in "on output" state