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MT8850A / MT8852A Bluetooth Test Set Audio Measurements
(MT8852A only)
Note: The RF level used is the same level as that set for the script that was last run.
4. Press the [EUT addr] soft key and set the EUT address in the normal manner. Refer
to “Entering the BT Address of the EUT” in chapter 8 of this manual for details.
5. Move the cursor to “ACL Connect status” and press the
key to establish an
ACL connection. When the ACL connection has been established, the square
indicator at the right of this item becomes solid and, if the EUT supports SCO, the
indicators on the “SCO channel status” line change to clear squares to reflect this.
6. If the address source is set to RS232 or USB, it is now necessary to make the EUT
settings shown in the screen below. Press the
[1 of 3] soft key followed by the [2 of
3]
soft key to display the third page.
Note: No settings are required on this screen if the EUT address source is not set
to RS232 or USB. Skip to step 6 in this procedure if you are not initialising
the EUT using the MT8852A “EUT Control” interface.
Input coding format: Select the EUT baseband sample input/output data
format. There are three possible settings, “Linear”, “A-
Law”, and “u-Law”.
Input data format: Select the EUT baseband sample data format. There are
three possible settings, “1's”, “2's”, and “sign magnitude”.
Input sample size: Select either an 8 or 16 bit baseband sample size.
Linear PCM bit Posn: Set the EUT Baseband sample offset within the 16 bit
field. Specify a value within the range of 0 to 7.
Note: When these settings are complete it will not be necessary to repeat this
procedure until the EUT is changed.
7. Press [3 of 3] to return to page 1 and press the [TX power] soft key.
8. Enter the “TX power level” value using the keypad. The audio power level can be set
to between 0 and -90 dBm.
Note: An ACL connection must be made before an SCO link can be established.
When a device makes an ACL connection, it reports within its “Supported
Features” response whether or not it supports SCO connections, and if so,
which HV packet types it can support. Do not establish a SCO connection at
this stage.
9-2 13000-000109
Audio Measurements June 2003