Humax T9 사용자 설명서
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DUT Graphical User Interface
DUT Tool Package
Using the DUT GUI
User’s Guide
18
Revision 1.1, 2013-05-06
When transmission is used, you can select several standard and special configurations:
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Set TPC - This option is only available in open loop (see Calibration Mask details in
TPC is one of the gain controls of the RF chip. Enter 1, to select transmission with the highest power, any number
greater than 2 will lower the output power. The maximum value for TPC is 30 (lowest power). You can decide
whether to apply the same TPC value to both transmitters or set independent values for each transmitter.
The output power in open loop mode can be changed before or during transmission.
greater than 2 will lower the output power. The maximum value for TPC is 30 (lowest power). You can decide
whether to apply the same TPC value to both transmitters or set independent values for each transmitter.
The output power in open loop mode can be changed before or during transmission.
5.4
Closed Loop Output Power Table
Figure 11
Closed Loop Tx Setting
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Set Tx power - In a closed loop transmission (see Calibration Mask details in
, power is set automatically using pre-calibrated information stored in the EERPOM/flash. The
information is stored in the EEPROM/flash during the TPC calibration method implemented by Litepoint's
IQFact application.
IQFact application.
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The Tx output power is configured automatically according to the rate (see tables below).
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Output power in closed loop can be changed before or during transmission.
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Close loop power can be set in 1/8 dB resolution example 16.125 dBm, 16.875 dBm etc.
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Power table according to the rate is found and can be adjusted in the file: dut_cfg.txt which is located in
C:\Program Files\Lantiq\DUT.
C:\Program Files\Lantiq\DUT.
•
There are two options to set the default power per rate. Both are configured using the Use_TPC_Power
parameter option in the dut_cfg.txt file:
parameter option in the dut_cfg.txt file:
and
.
5.4.1
Constant Power
Use_TPC_Power = 0
Power is determined according to the following table:
Power is determined according to the following table:
MCS Rate
0
1
2
3
4
5
6
7
Const_Power_11a
17
17
16
15
15
15
15
15
Const_Power_11b
19
19
19
19
19
19
19
19
Const_Power_11g
19
19
18
18
17
17
17
17
Const_Power_11n5
17
16
16
15
15
15
15
15
Const_Power_11n24
18
18
17
17
17
17
17
, rates 8-15 have the same power as rates 0-7.
Table 3
Constant Power