Antec DECADE Elite, Service Manual

Page: 40 / 72

40 175.0020 - DECADE Elite service manual - rev 03
ZER.IE zero current for IE converters
Before adjusting the zero current make sure the system has been stabi-
lized for more than an hour with the cell off and T=35
o C.
Procedure:
1. Select R using arrow and +/- buttons.
2. Set compensation to Ic = zero current using AUTO, it may be
necessary to use AUTO more than once.
3. Repeat procedure for each R
Table IV. Residual current specifications
R Specified
1k
0.0 ± 0.1 μA
100k 0.0 ± 0.1 nA
1M 0.00 ± 0.01 nA
10M 0 ± 2 pA
100M 0 ± 2 pA
Table V. Parameters
Parameter Screen Description Type
R ZER.IE Select active resistor of IE converter using
+ or - button. Values are 100M, 10M, 1M,
100k, 1k Ohm
C
Ic ZER.IE Residual current C
ADC ZER.IE Digital offset ADC C
Offs ZER.IE Analogue offset ADC C
AUTO ZER.IE Automatically compensate to zero current F
UNDO ZER.IE Restore previous compensation setting F
RESET ZER.IE Release any zero compensation F
Explanation: Type S is status, F is function and C is control.
I c = - 0 . 0 6 8 n A Z E R . I E 1 59
O f f s = + 1 0
R = 1 M O h m A D C = + 1 8 8 2 5 > 3 0 ° C
P R E V A U T O U N D O R E S E T
Cell cable must be disconnected all the time. If the cell cable is
connected ‘ERR 13 Disconnect flow cell’.