ADLINK ACL-8216 - Manual (Page 23)

Installation • 15
2.11 D/A Reference Voltage Setting
The D/A converter's reference voltage source can be internal or external
generated. The external reference voltage comes from connector CN3 pin
31(ExtRef1) and pin12(ExtRef2), see section 3.1. The reference source of
D/A channel 1 and channel 2 are selected by JP2, respectively. Their
possible settings are shown as below:
D /A C H 1 is E x te rn a l
D /A C H 2 is E x te rn a l
J P 2
IN T R E F
E x tR e f2 E x tR e f1
IN T R E F
IN T R E F IN T R E F
IN T R E F IN T R E F
IN T R E F IN T R E F
D /A C H 1 is In te rn a l
D /A C H 2 is In te rn a l
(d e fa u lt s e ttin g )
D /A C H 1 is In te rn a l
D /A C H 2 is E x te rn a l
D /A C H 1 is E x te rn a l
D /A C H 2 is In te rn a l
E x tR e f1
E x tR e f1
E x tR e f1
E x tR e f2
E x tR e f2
E x tR e f2
J P 2
J P 2
J P 2
Figure 2.8 D/A Voltage Setting
The internal voltage is -5V or -10V which can is selected by JP1. The
possible configurations are specified as Figure 2.9. Note that the internal
reference voltage is used only when the JP2 or JP3 is set to internal
reference.