Circuit Note

CN-0416

Rev. 0 | Page 7 of 9

GETTING STARTED

A detailed user guide for the EVAL-CN0416-ARDZ is available

on the Analog Devices Wiki. Consult this user guide for all

aspects of hardware and software operation.

Before powering all test setups, set the on-board switches in the

EVAL-CN0416-ARDZ to the communication settings

corresponding to the test setup.

Direct Communications Test Setup and Functional Block

Diagram

Set the on-board switches of each EVAL-CN0416-ARDZ board

to full duplex with termination. The user can opt to either use

isolated or nonisolated communications.

To set up the connection diagram shown in Figure 7, take the

following steps:

1. Connect the two EVAL-CN0416-ARDZ boards to the two

ADALM-UARTJTAG boards via the P11 jumper header.

2. Connect the two EVAL-CN0416-ARDZ boards together

using a straight-through CAT5 cable.

a. For isolated communications, connect P4 of one board

to P5 of the other board or vice versa. Figure 7 shows

the setup connections for isolated communications.

b. For nonisolated communications, connect P6 of one

board to P24 of the other, or vice versa.

3. Connect the two ADALM-UARTJTAG programming

boards to the PC using the USB-to-microUSB cables.

a. Be sure to identify the correct virtual COM ports used

by the two ADALM-UARTJTAG boards.

b. On the PC, connect to the first EVAL-CN0416-ARDZ

via a serial terminal connection. Ensure that the baud

rate and COM port are set properly.

c. On the PC, connect to the second EVAL-CN0416-

ARDZ via a second serial terminal connection.

Ensure the baud rate and COM port are set properly.

4. The two serial terminals are now connected to each other

via RS-485 communications.

Any message sent by the one terminal is received by the other

terminal. Messages between the two serial terminals can be sent

and received simultaneously.

Figure 7. Isolated Full-Duplex RS-485 Connection Diagram for Direct Communications

P24

P6

P4

CAT5 CABLE

ISOLATED

COMMUNICATIONS

P5

P11

EVAL-CN0416-ARDZ

ADALM-UARTJTAG

10-PIN CONNECTION

MICRO-USB TO USB

CABLE

USB

USB

PC

USB

P24

P6

P4

P5

P11

EVAL-CN0416-ARDZ

10-PIN CONNECTION

ADALM-UARTJTAG

MICRO-USB TO USB

CABLE

USB