Anritsu MT8850A, Руководство по эксплуатации, Страница: 39 / 156

Getting Started MT8850A / MT8852A Bluetooth Test Set
13000-000109 6-5
January 2003 Running a Script in Null Packets Mode
The four parameters above (“Test control”, “Payload”, “Packet type”, and “Hopping mode”)
are accessed in the following manner.
11. Press the hard key.
12. Move the cursor to the script number and press the [Setup] softkey.
13. Move the cursor to “Edit” and press .
14. Make the required settings for “Test control”, “Payload”, and “Packet type”.
15. Press [1 of 2] softkey to display the second page and make the settings for
“Hopping”.
Running a Script in Null Packets Mode
This mode is used to enable indicative measurements to be made on EUTs that have no
test mode support. In this mode the MT8850A/MT8852A does not use Test Mode
signalling at all, and makes only a limited subset of measurements on packets without
payloads. Measurements are not performed in accordance with the Bluetooth test
specification. When the user selects to run a script in null packets mode, a message to
this effect displays on the uppermost line of every page to remind the user that a mode
other than standard is currently selected.
The MT8850A/MT8852A can be made to link to an EUT and maintain the link by sending
POLL packets. In response to a POLL packet, the EUT will return a NULL packet. A NULL
Packet has no payload but can be used for power, initial frequency, drift, and modulation
measurements without having to activate test mode.