Panasonic EB-GD30 Service Manual page 45

Calibration of output power on each power level
NOTE: To ensure that the telephone operates within set SAR margins, Panasonic recommends that a power meter
capable of measurement to an accuracy of ±0.2 dBm (Hewlett Packard HP8990 or equivalent) is used when
calibrating power levels. Use of a less accurate power meter may result in the phone failing to meet SAR
standards.
To calibrate the ramping gain, first switch the unit into Test Mode (Section 6.3).
This procedure must be followed for all power levels PL5 to PL19, for low, middle and high channels for GSM 900. GSM 1800
shall be calibrated for all power levels PL0 to PL15 for top middle and bottom channels.
1. Set the Channel box controls to Channel 62 at Power Level 14, normal burst modulated with random data as follows:
a. Press the down arrow until CHANGE CH <62> is highlighted and then press ENTER.
b. Press the down arrow until PL <14> is highlighted. Press the move left arrow until <14> appears in the highlighted field.
Press ENTER.
c. Press the down arrow until TX DATA <OFF> is highlighted.
Press the move arrow until <NRL R> appears in the highlighted field. Press ENTER.
2. At the GSM test unit measure the Peak Power.
3. If the measured power is in the range of the target power (see previous table), then proceed to step 10.
4. At the Channel box press F7 to view the TRIM for the mid-channel.
MCUK991001C8
Service Manual
Figure 6.14: Tx data field
Figure 6.15: Power level view 1
Section 6
– 39 –
TEST AND MEASUREMENT
Issue 1
Revision 0