DC1554A-A Analog Devices

DEMO MANUAL DC1554A LTM2882 Dual Isolated RS232 Module Transceiver with Integrated DC/DC Converter DESCRIPTION voltage V and communicates all necessary signaling Demonstration circuit DC1554A is a dual isolated RS232 CC2 across the isolation barrier using LTCs Isolation Module Module transceiver with integrated power featuring Technology. the LTM 2882. The demo circuit provides 2-channel, 2500V , galvanically isolated RS232 transceiver in- RMS Design les for this circuit board are available at terface. All components are integrated into the Module DEMO MANUAL DC1554A QUICK START PROCEDURE Demonstration circuit DC1554 is easy to set up and evalu- 2. With power off, connect the input power supply to V CC ate the performance of the LTM2882. Refer to Figure 1 and GND. for proper measurement equipment setup and follow the 3. Turn on the power at the input. procedure below. Note: Make sure the input voltage does not exceed Note: Use a short ground lead on the oscilloscope probe 6V. when measuring input or output voltage ripple and high 4. Check for the proper output voltages. V = 5V, LED speed signals. CC2 D1 is ON and LED D2 is ON. Note: Jumpers JP4, JP5, JP8, JP9 and JP10 may be 5. Once the proper output voltages are established, con- installed in three possible positions depending upon nect a standard 9-pin RS232 cable between J1 on the the desired operating state. Positions may be vertical or demo board and a computer. horizontal. Please pay careful attention to the demo circuit labeling and reference the attached schematic for proper 6. Launch any program with the ability to send, receive, and con guration. monitor RS232 characters or data, including the ability to control the communication handshaking. Realterm is 1. Place jumpers in the following positions. a free, powerful, terminal program which can easily be JP1 ON (default) used for the above purposes. Signals may be veri ed JP2 V (note: logic signals referenced to V ) with the use of an oscilloscope connected to any of the CC CC appropriate signal turrets on the demo card. JP3 ON (default) Note: Jumpers JP9 and JP10 must be inserted in the JP4 LOOP (center horizontal position) center horizontal position to allow signal monitoring JP5 LOOP (center horizontal position) of the receiver input channels on the associated demo board turrets. JP6 LOW (default) JP7 ON (default) JP8 ON (default) JP9 Remove JP10 Remove dc1554af 2