TD220_manual12.doc Page 9 of 38 1/10/2011
4 Common Setup Tasks
4.1 Key the Transmitter for Test Purposes
1. Log in to the radio on its COM1 console using a serial terminal emulator program.
2. Go to the Radio Configuration menu.
3. Select the frequency for the test transmission.
4. Select the RF Output Power to use. Note that power levels greater than 2 Watts will
timeout after a 5-second period by default. Ensure ventilation with supplemental forced
airflow if longer durations are desired.
5. Select the Force TX Key menu option.
6. When finished, deselect the Force TX Key menu option.
4.2 Prepare the Network Interface for a Radio
Each radio is assigned an IP Address, a Netmask, and a Gateway IP Address. The IP Address and
Netmask should be chosen carefully. The radio will network directly with other equipment with IP
Addresses that are on a common Subnet. IP Addresses that begin with the same numerical IP
address bits where the Netmask is one will be on the same Subnet. For e ample, if the IP Address is
10.4.100.1 and the Netmask is 255.255.0.0, the radio will attempt direct Ethernet communication
with any node whose IP Address begins with 10.4. If a message is bound for a node outside of the
10.4 network, it will be sent to the Gateway IP address instead so that it can be placed from the
radio’s subnet onto another subnet.
1. Log in to the radio on its COM1 console using a serial terminal emulator program.
2. Go to the IP Configuration menu.
3. Set the IP address of the radio, plus the Netmask and Gateway.
4. Go to the Maintenance/Tools Menu and select the Ping Utility.
5. Enter the IP address of a known node on the network.
6. E ecute the Ping and observe the results. If the network interface is working properly, Ping
responses should be received.
4.3 Set Up a Base Unit
1. If not already done, complete steps from 4.2 above.
2. Connect the RS-232 NMEA serial data output from the GPS receiver to the Base Radio via
the radio’s COM2 port. Drive serial data into the radio on DB-25 pin 2.
3. Connect the GPS’s PPS output to the Base Radio. Drive TTL into the radio on DB-25 pin 23.
4. Log in to the radio.
5. Go to the System Configuration menu.
6. Set the unit to Base mode and reboot if necessary.
7. Set the base type (A, B, or C).
8. Set the window size. Mobiles will transmit in a randomly selected available slot among
2^(Window Size) slots. For small networks, this can be 1. For larger networks, use a
Window Size that provides double or quadruple the number of mobiles e pected under one
base at a time.
9. Set the IP Port on which the base will receive UDP messages from wayside devices.
10. Set up an ITCS Translation Table. For test purposes, this may be as simple as setting up one
known address with a mask of all “F’s”.
11. Verify Ethernet Link using the Ping utility in the Maintenance/Tools Menu.
12. Begin sending UDP data.
13. Verify the TX LED illuminates and the radio begins transmitting over the air.
