The instrument can measure EVDO performance over the air (OTA) with an antenna, or by connecting the base station directly to the instrument.
To measure an EVDO signal over the air, connect the appropriate frequency band antenna to the RF Input, and connect a GPS antenna to the GPS connector.
PN Select Setup
The instrument needs a timing reference in order to determine PN Offset and timing errors. This reference comes from the base station when it is connected to the instrument, or it can be recovered from GPS when a GPS antenna is connected.
The setup menu for this function is:
1. Press the Setup main menu key.
2. Press the PN Setup submenu key to open up the PN Setup menu.
3. Press the PN Trigger submenu key to toggle through No trigger, GPS, or External.
PN Setup
No Trigger: If both GPS and external timing are unavailable, then you may choose No Trigger for the PN search.
GPS: Uses GPS as the timing reference.
External: The instrument uses an external, even-second time mark as the timing reference. The time mark is usually available at the base station on a BNC connector labeled “ESTM” or “PP2S”. ESTM must be connected to the External Trigger In connector on the instrument.
4. Press the PN Search Type submenu key to toggle between Auto or Manual. In Auto mode, the instrument automatically detects the strongest pilot, while in Manual mode it searches only for the specified PN.
Note
If Manual Search Type is selected, then press Manual PN Offset and enter the desired PN value.
5. Press Back to return to the previous menu.
MAC Codes Setup
MAC Walsh Codes setup is used to select 64 codes or 128 codes.
1. Press the Setup main menu key.
2. Press the Walsh Codes submenu key to toggle between 64 codes and 128 codes.
