Danfysik 9700 - Page 33

System 9700 User Manual
Page 33 of 56
3.3.1.8. DA AUTO ADJUSTMENT (Gain & Offset) (Esc<DASET)
The scaling factors for the DA channels can automatically be adjusted with this setting. This
feature is specially designed for “non-calibrated” DACs such as the 855 DAC.
SW3 FOR ADSET
ON
1
2 3
4
15
Parameters:
SW4
0 1
30
2
3
31
#1
#1: Not all channels are implemented.
CH_No. 2
3
CH_No. 2
2
CH_No. 2
1
CH_No. 2
0
NOT USED
FUNC
MODE
CH_No. 2
4
ON
1
2 3
4 5 6
7
8
OFFSET GAIN
USE RESTORE
OFFSET adjustment
The OFFSET adjustment can automatically be executed if the value lies between 0 and 255.
To activate automatic OFFSET adjustment the following steps must be performed:
 Select SW3 as above. “setting number15".
 Select the desired channel number “lever 1 to 5" on SW4.
 Set lever 8 on SW4 to OFF and lever 7 to OFF (the SW1 LEDs will display the present Offset
value).
 Set the AD channel value (WA for “DA 0") to a value that gives a zero output.
 Press the Setup button. A given “DA 0 0" or “WA 0” will now produce a zero output at the
DA channel. Due to the unipolar operation of the DACs, only positive offset values can be
added.
 To restore the Offset value to the default factory setting (Zero), set lever 7 to 1 before
pressing the Setup button.