Waters 2475, Operator'S Manual, Page: 51 / 228

Making signal connections 2-15
• Turn the lamp on and off
Generating an auto zero on inject
To auto zero the detector at the start of an injection from an Alliance
separations module:
1. Make the connections shown in the following table and figure.
2. Configure the auto-zero signal at the detector’s front panel. The default
auto-zero signal is Low (see page 3-25 ).
Connections for auto zero on injection
Connections for generating an auto zero on inject
Alliance separations module
(B inputs and outputs)
2475 detector (A inputs)
Pin 1 Inject Start Pin 9 Auto Zero +
Pin 2 Inject Start Pin 10 Auto Zero –
1
2
3
4
5
6
7
8
9
10
11
12
+
−
+
−
+
−
+
−
+
−
Inject start
Inject start
Ground
Stop flow
Stop flow
Hold inject 1
Hold inject 1
Hold inject 2
Hold inject 2
Ground
Chart out
Chart out
1
2
3
4
5
6
7
8
9
10
+
−
+
−
+
−
+
−
Inject start
Inject start
Ground
Lamp on/off
Lamp on/off
Chart mark
Chart mark
Ground
Auto zero
Auto zero
Alliance
B (inputs and outputs)
2475 detector
A (inputs)
Red
Black