User's Manual

Table Of Contents
Rev 1.34, June 2, 2004
Copyright © 2001-2004 Motorola, Inc. All rights reserved. Page 23 of 44
Expected Results:
Contact the Motorola factory if the results of this test are not approximately those indicated in
the text above.
5.5. Total Average Transmit Power Test
Summary Description: This test determines the total average transmitted RF power across the
entire frequency band from a Motorola UWB transceiver. Note that this measurement is NOT
conducted in the same fashion as that used for determining FCC UWB spectral mask
compliance (see section 5.3.2), nor does it yield the same result. The average transmitted RF
power, together with the receive sensitivity value, can help with link budget estimations and with
determination of the useful range of UWB radios. The transceiver is run in continuous, unframed
transmit mode during this test.
Prerequisites:
Run the Transmit Spectral Mask Compliance Test (see section 5.3.2), if you have not
already done so, before starting this test.
Connection Diagram
Power Meter with
Power Sensor
Linux PC
1394
Firewire
UWB
Transceiver
XtremeSpectrum
Antenna cable
Figure 6: Equipment Setup for the Total Average Transmit Power Test
Test Procedure:
1. Set up equipment as indicated in Figure 6. Follow the guidelines in section 5.2.1 when
making or breaking RF connections.
2. Turn on all test equipment and allow it to warm up for the length of time specified by the
manufacturer.
3. Set the power meter measurement range to 0 dBm.
4. Verify that the transceiver is powered on.
5. Open a command window on the Linux PC.
6. Use the cd command as necessary on the Linux PC to move to the directory containing
the mode application supplied with the Motorola SDK.
7. Run the following command in the Linux PC command window opened as explained
above:
./mode BT
See the Motorola UWB Software Development Kit Utilities Guide for definitions of the
parameters used with the mode command.
8. Disconnect the power meter, run its zero calibration procedure, then reconnect it.