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TC3020R/S
User's Manual
Rev. 1.7
Figure 6.
Single Mode Loopback test on unit B.
Performing the Multimode Loopback Test using one (1) TC3020.
The purpose of this test is to verify that the optical Multimode TX/RX connectors are receiving and transmitting
the incoming signal coming from the PC back to the PC. This test will ensure that the TC3020 unit(s) are working
properly.
C. This test will require the testing setup shown on Fig. 7. Follow the connections shown on the figure below and
connect your equipment accordingly. You must also locate the DIP switches on the front panel of the TC3020
and enable the (MM LB) switch (switch #1) to the" ON" position as shown on Fig. 7.1.
1. Use an RS-232 adapter and connect it from your PC to a Multimode TC1200 RS-232 fiber modem or a
compatible RS-232 fiber modem.
2. After completing all of the connections, you should be able to transmit and receive data.
3. You should observe that the (MM TX), (MM RX), and the (MM LB) LEDs are lit solidly. This indicates that
the TC3020 unit is working properly.
3. After you finish this test, reset switch #1 (MM SB) to the "OFF" position to perform the next test.
Figure 7.
Multimode loopback test on TC3020.
If your application requires the use of two TC3020's to TX/RX your data, then the following tests will verify that
your TC3020's are working properly.
Performing the Multimode Loopback Test on Unit B using two (2) TC3020 Units.
The purpose of this test is to verify that the optical Multimode TX/RX connectors are receiving and transmitting
the incoming signal coming from the PC back to the PC. This test will ensure that the TC3020 unit(s) are working
properly.
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