Factory Default Settings
3-2
3.1
Factory Default Settings
Factory default jumper settings for the EVM board are shown in Table 3 - 1.
These settings allow the EVM to operate in bipolar,
±
10 V mode of operation
using the internal voltage reference.
Table 3 - 1. Factory Default Jumper Setting
Reference
Jumper
Position
Function
W1
OPEN
V
REF
output pin is floated and not used for offset adjustment.
W2
2 - 3
REFEN pin is tied to AGND to enable 10 V internal reference.
W3
1 - 2
REF
OUT
pin is strapped to REF
IN
to provide 10 V internal voltage reference.
W4
OPEN
Onboard external reference through U3 is disconnected.
W5
1 - 2
Negative supply rail of U2 op amp is supplied with –15 V.
W6
OPEN
REFADJ pin is floated.
W7
CLOSE
RFB2 pin is strapped to V
OUT
pin for DAC output feedback.
W8
CLOSE
TEST pin is tied to DGND.
W9
OPEN
SJ pin is floated.
W10
OPEN
RFB1 is floated.
W13
3 - 4
Buffered output of DAC is channeled through to J4-6.
W14
OPEN
Reset pin is pulled high.
W15
OPEN
Configure U2 op amp for unity gain.
W16
OPEN
RSTSEL pin is tied high to set DAC reset value to mid-scale.
W17
OPEN
Not applicable. For DSP FS receive line use only.
W18
OPEN
Not applicable. For DSP data receive line use only.
W19
OPEN
Not applicable. For DSP clock receive line use only.
