Real Time

Timeslot-based Waveform Setup 1 2 3 4 5 6

Making GSM Measurements

Measure a Single Timeslot GSM signal

1. Click the Generate and Download icon as shown below.

   

2. Measure the signal using an Keysight E4406A vector signal analyzer. Refer to GMSK power versus time in Keysight Literature number 5988-2389EN for instructions.

Configure and Measure Timeslots 0 and 2

In the tree view, click the next to the carrier you are configuring to display the Timeslot selection for that carrier in the tree view. Click Timeslot to open the window for configuring timeslots.

1. Select Timeslot 0 in the list.

2. Click the Change Timeslot values button and copy Timeslot 0 to Timeslot 2 as shown below.

3. Use the default settings for the timeslot parameters as shown.

   

4. Click the Generate and Download icon.

5. Measure the signal using an Keysight E4406A vector signal analyzer. Refer to GMSK power versus time in Keysight Literature number 5988-2389EN for instructions.

Configure and Measure all Timeslots

1. Click the Change Timeslot values button and copy Timeslot 0 to all timeslots.

2. Experiment with different parameter settings such as Power, State, and Multislot for different timeslots. Note the effect of turning Multislot on and off. This emulates the operation of different base station types. The E4406A vector signal analyzer will record the power level for adjacent bursts and test to see if they fit within the power versus time mask.

Configure and Measure Timeslot 0

1. Click the Change Timeslot values button and turn off all timeslots except timeslot 0 as shown below.

   

2. Click the Generate and Download icon.

3. Measure the signal using an Keysight E4406A vector signal analyzer. Refer to GMSK output RF spectrum (ORFS) in Keysight Literature number 5988-2389EN for instructions.

Increase Amplitude and Measure

Use one of the following methods to set the amplitude:

If you are using a signal generator:

Front Panel Control     

1. On the signal generator front panel, press the Local hardkey to activate the front panel keys.

2. Press the Amplitude hardkey.

3. Enter 7.

4. Press the dBm softkey.

If you are using an EXT:

Front Panel Control     

1. On the EXT front panel, press the Cancel/(ESC) hardkey to activate the front panel keys.

2. Press the Amplitude.

3. Enter 7.

4. Press the dBm softkey.

N7602B Control

1. In the tree view, select Instrument.

   

2. Enter 7 dBm in the Amplitude cell.

3. Click the Update to Instrument button.

Measure the signal using an Keysight E4406A vector signal analyzer. Refer to Transmit power in Keysight Literature number 5988-2389EN for instructions.