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dc1815afc
DEMO MANUAL DC1815A
quick start proceDure
Figure 1. DC1815A Setup
Demonstration circuit 1815A is easy to set up for evaluat-
ing the performance of the LTC4266A. Refer to Figure 1
for proper test equipment setup and follow the procedure
below.
1. Set MID jumper JP5 to LO which disables midspan
mode.
2. Set AUTO jumper JP4 to HI which enables AUTO pin
high mode.
3. Connect a 55V to 57V power supply across AGND (+)
and VEE (–). Size the power supply considering the
maximum power delivered to the PDs.
4. Connect with an Ethernet cable an 802.3at Type 1 or
Type 2, or LTPoE++ compatible PD to one of the four
bottom ports of 2x4, RJ45 connector J1.
5. (Optional) For data tests, connect a PHY with an
Ethernet cable to one of the four top ports of 2x4, RJ45
connector J1.
6. (Optional) Connect a DC590B via ribbon cable to the
DC1814A and via USB to a PC. Open the QuikEval
software for I
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C GUI interfacing.
