The instrument bandwidth can be manually set to 3.5 MHz, 5 MHz, 7 MHz, 8.75 MHz, or 10 MHz. Set the correct bandwidth for Demodulator, Preamble Scanner, and Power versus Time measurements.
1. Press the Setup main menu key.
2. Press the BW (bandwidth) submenu key to display a set of available bandwidths: 3.5 MHz, 5 MHz, 7 MHz, 8.75 MHz, or 10 MHz.
3. Use the Up/Down arrow keys or the rotary knob to highlight the applicable bandwidth on the list, and press the Enter key to set the bandwidth. The selected bandwidth is displayed in the instrument settings summary column.
Frame Length Setup
The frame length can be set to 5 ms or 10 ms. For Demodulation, Preamble Scanner, and Power versus Time measurements, frame length needs to be set correctly for successful preamble synchronization.
1. Press the Setup main menu key.
2. Press the Frame Length submenu key to toggle between 5 ms and 10 ms.
Demod Type Setup
The instrument can demodulate the signal in three ways:
• It can demodulate the signal by decoding the downlink map (DL‑MAP).
• It can demodulate the signal based upon manually‑entered parameters for the DL‑MAP (by using an .xml file). DL‑MAP parameters can be defined by using the Anritsu IQProducer software and then uploading into the instrument with Master Software Tools.
• It can demodulate only the frame control header (FCH) portion of the signal.
1. Press the Setup main menu key.
2. Press the Demod submenu key to select Auto, Man, or FCH.
3. If Man (manual) is selected, press the Load Parameter File submenu key to load an XML file with the DL-MAP parameters that are defined by using the Anritsu IQProducer software.
Span Setup
1. Press the Setup main menu key.
2. Press the Span submenu key to display the available spans: 5 MHz, 10 MHz, 20 MHZ, 30 MHz.
3. Use the Up/Down arrow keys or the rotary knob to highlight the applicable span on the list, and press the Enter key to set the span.