Load
Jumpers
GND
VSEN
SEN
_A
VOUT/I
OUT_A
VSEN
SEP
_A
GND
VSEN
SEN
_B
VOUT/I
OUT_B
VSEN
SEP
_B
GND
VSEN
SEN
_C
VOUT/I
OUT_C
VSEN
SEP
_C
GND
VSEN
SEN
_D
VOUT/I
OUT_D
VSEN
SEP
_D
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EVM Hardware Overview
9
SBAU248 – November 2016
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DAC8775EVM User’s Guide
Figure 6. Output Terminal Block Connections and Load Jumpers
2.5.6
Applying HART Signals
JP28, JP29, JP42, and JP43 are available to couple external HART FSK communication signals onto the
current outputs. When injecting the HART signal, remove JP28, JP29, JP42, or JP43 and apply the HART
signal to pin 1. When a HART signal is not being injected, install JP28, JP29, JP42, or JP43, with AC
coupling the HART pins to ground.
2.6
Connecting the SM-USB-DIG
To connect the EVM board and the SM-USB-DIG platform together, firmly slide the male and female ends
of the 10-pin connectors together with the Texas Instruments logo of the SM-USB-DIG facing up as shown
in
Figure 7
. Make sure that the two connectors are completely pushed together as loose connections may
cause intermittent operation.
Figure 7. SM-USB-DIG Connection