Waters 2489, Operator'S Manual

Page: 45 / 234

Making electrical power connections 2-13
I/O signal inputs and outputs
I/O signals
The table below describes each of the signals available on the I/O connectors.
Refer to
Appendix B for details on the electrical specifications for the signals.
I/O signals for the detector
Signal Description
Inject Start
a TTL contact closure. Configurable input to initiate
sequencing of time-programmed events. Defines the
start of a run (typically an injection) and resets and
starts the run-time clock to 0.00 minutes. Initial
conditions apply immediately.
Lamp On/Off
a
Configurable input to allow an external device to turn
the deuterium lamp off and on.
Chart Mark
a
Configurable input to add a chart mark (at 10% of full
scale) to either or both analog output channels.
Auto Zero
a
Configurable input to auto zero either or both
channels.
Analog 1
b
2-V full-scale analog output signal of channel A (scaled
to the current AUFS setting).
1
2
3
4
5
6
7
8
9
10
I
1
2
3
4
5
6
7
8
9
10
II
TP01494