
Document type:
Title:
Revision date:
Revision:
User's Manual (MUT)
Mod. N568B/LC 16 Ch Spectroscopy Amplifiers
26/01/2007
4
Filename:
Number of pages:
Page:
N568B_N568LC_REV4.DOC
37
33
Table 4.17: Operating Codes of the N568B/LC
Byte 5 (Hex)
Byte 6*
Byte 7**
Byte 8
Meaning
%0 0
==
==
Module identifier
%1 0
==
==
Read all Parameters for all Ch Offset Value
%2 0
==
==
Read Offset Value
%3 %n
==
==
Read all Parameters for Channel n
%4 0
==
==
Read MUX Enable Status & Last Accessed Channel
%10 %n
%m
0
Set Channel n Fine Gain
%11
%n %p 0
Set Channel n Coarse Gain
%12 %n
%m
0
Set Channel n Pole Zero Adjustment
%13
%n %q 0
Set Channel n Shape
%14
%n %b 0
Set Channel n Output Polarity
%15
%n %b 0
Set Channel n Output Configuration
%16 0
%m
0
Set Offset Value
%20 0
==
==
Disable Multiplexed Outputs
%21 0
==
==
Enable Multiplexed Outputs
*) n is the Channel Number (%0 to %F for a selected channel, %10 for a set/read in common to all
Channels);
**)
allowed values (HEX):
m=0 to FF;
p=0 to 7;
q=0 to 3;
b=0 to 1;
4.10 SET VALUES
Operating Code %10
; the allowed Fine Gain values are %0 to %FF, corresponding approximately to
a multiplying factor from 0.2 (%0) to 2 (%FF) to be applied to the Coarse Gain value.
Operating Code %11
; the allowed Coarse Gain values for each Channel are 0 to 7: each step
corresponds approximately to a doubling of the Coarse Gain value. Due to the dependence of the
Gain value from the Shaping Times and Input Signal Risetimes, it is meaningless to quote an absolute
Gain value setting (see §3.2.5). As an example, if the measured amplifier Gain (@ Coarse Set value
0, Fine Set value 0, Shaping time 0.2
μ
s and Input Signals Rise Time 0.2
μ
s) is 1, it will be 16 at set
value 4 with the same configuration on the other settings. Relative set Values are given as follows: