1. Connect the Serial Cable from one of the two ports on the Base Station to the computer (if unsure of which to use, try both). If your PC does not have a serial port, you need a Serial to USB adapter.
2. Run the TTCI software application and load the included Anritsu’s setup file Anritsu.ttc.
3. Select the proper COM Port for your computer.
4. Press the connect button. The connection indicator on the bottom left should turn green.
TTCI Software Configuration
5. Once connected, press the Stethoscope button to access the test screen, and then start the test by pressing the “play” button.
Running TTCI Software
Hardware Setup
6. Connect the ETELM base station and the S412E to the MA25200A High Power Input Protection Module as shown below:
ETELM Base Station Setup
S412E Setup
7. Set S412E to TETRA Analyzer Mode.
8. Ensure that the Modulation Type is set to “Base Station”
Setup -> Mod Type = Base Station
9. Set S412E Frequency:
• Set Rx frequency to Tx frequency of the BS
• Set Tx frequency to Rx frequency of the BS
10. Set the S412E Amplitude:
• Set Input and Output Offset to the appropriate Loss. This also compensates for the loss through the attenuators, if external attenuators are used. Both Input and Output port offset levels must be set properly.
• Set the Reference Level to an appropriate setting (a few dB higher than the expected TB3 Tx output level). This is to avoid overdriving the ADC.
• Set the Output Level to your desired test level. Note that losses and external attenuation will be taken into account by the offset setting used earlier. If you want –110 dBm output, set the Output Level to –110 dBm.
11. Set up TETRA Base Station Receiver Sensitivity Mode:
Measurement -> TETRA BS Sensitivity -> Base Station = ETELM NeTIS
This will set the ECC to ETELM recommended test default; do not change any other settings.
12. Make sure the BS is transmitting and verify that the ECC displayed on the S412E is what is expected.
13. Start the S412E BS Sensitivity test by selecting the “Start Test” button in the TETRA BS Sensitivity menu.
14. WAIT for the “Start Test” button to change to “Stop Test” – this lets you know that the signal generator has synchronized to the BS frame structure and is playing the TCH/7.2 signal.
