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D.2 TTL and Relay Output Operation
The Dionex ED50A provides two TTL outputs and two relay contacts for control
of functions in external devices such as an integrator, autosampler, or another
Thermo Scientific module.
After connecting the TTL and Relay outputs (see Section D.1), toggle the output
states on and off from either the
screen allows programming of the output states in method steps for timed
operation.
•
To turn on a TTL or relay output, set the corresponding output field on the
screen or
DETAIL
•
To turn off a TTL or relay output, set the corresponding output field to
(open).
DETAIL SCREEN
OUTPUT
OFFSET
TOTAL
LOCAL
Help Message
Figure D-2. Detail Screen (DC Amperometry Mode)
Doc. 065551-01 6/13
DETAIL
screen to
METHOD
DC AMPEROMETRY
128.2
nA
58.7
nA
184.9 nA
pH
12.2
POTENTIAL
METHOD 05
D • TTL and Relay Control
screen or
METHOD
(closed)
1
.
CELL
ON
RANGE
200 nA
REF
Ag
+ 0.80 V
123.45 MIN
screen. The
METHOD
0
TTL1
0
TTL2
1
RLY1
1
RLY2
0
D-3
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