Parts List/Tune Up Info

Tune Up Procedure of TW-E3C
FCC ID: 2AKMBTW-E3C
During manufacturing each device is individually calibrated. Measurement is performed in a
fully calibrated setup using an Spectrum analyzer 9k-30GHz FSP. Measurement procedure is
outlined below:
Measurement Procedure:
1. Set the device to operational voltage and on a predefined channel in a special test mode.
2. The actual output power is measured at several power levels.
3. The gain factors of each individual device are adjusted until the target value is met. The
appropriate gain control settings for each output power level are stored in each device
individually (for each power level). The user has no possibility to change these settings
later on.
4. The maximum gains of each individual device are adjusted and measured until the target
value is met. The production target power with tolerance compiles with the maximum
power in test report.
Maximum Target Conducted Power for Production Unit
Left Ear
Mode
Bluetooth Left ear Tune-up Limit (dBm)
GFSK
pi/4DQPSK
8DPSK
BLE
Low
10.5±1 dBm
7.5±1 dBm
8.0±1 dBm
8.0±1 dBm
Middle
10.5±1 dBm
7.5±1 dBm
8.0±1 dBm
8.0±1 dBm
High
10.5±1 dBm
7.5±1 dBm
8.0±1 dBm
8.0±1 dBm
Right Ear
Mode
Bluetooth Left ear Tune-up Limit (dBm)
GFSK
pi/4DQPSK
8DPSK
BLE
Low
11.5±1 dBm
9.0±1 dBm
9.0±1 dBm
9.0±1 dBm
Middle
11.5±1 dBm
9.0±1 dBm
9.0±1 dBm
9.0±1 dBm
High
11.5±1 dBm
9.0±1 dBm
9.0±1 dBm
9.0±1 dBm
Power unit: dBm
Then these appropriate gain settings are stored in each device individually.
The user has no possibility to change these settings later on, and during manufacturing each
device will be individual calibrated in this range. The measurement is done in a fully calibrated
setup, which is based on the base station simulator. Furthermore, the highest power level is
verified afterwards in a call measurement on three channels (low, middle and high).