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Jumpers and Coding Switches
D10: unipolar/bipolar... D 10 specifies whether the D/A-converters on board have been
configured for unipolar or bipolar operation. The format of the
transmitted D/A-data depends on the polarity selected.
Jumper J130,
pin 5-6
Bit D10 Polarity Data format
open 0 unipolar USB (Unipolar Straight Binary)
set 1 bipolar
BTC (Binary Two's Complement)
Default setting at delivery
It is principly possible to select unipolar operation fo some channels and
bipolar operation for others. However, this is not recommendable,
because it does not only cause irregularities for this jumper, but also for
jumper field J300. Especially the resetting of channels to 0 V after a
RESET is not possible simultaneously for unipolar and bipolar
operation.
D11: free for users... This jumper can be freely set and evaluated by the user.
D12-D15: DAC-number... By means of these four bits the number of equipped D/A-converter
channels can be read. The bits encode the channel number as follows:
Bit 3
(D15)
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
Bit 2
(D14)
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
Manual VME-DAC1612 Rev. 1.1 15
Bit 1
(D13)
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
Bit 0
(D12)
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Number of equipped D/A-converter
channels
Table 4.1.6: Encoding the number of equipped D/A-converter
channels
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16