Programming an EDGE Dynamic Power Measurement

Programming Example

The method used to synchronize the mobile station with the test set for the EDGE Dynamic Power measurement is proprietary to the mobile station manufacturer. The test set has no direct control of synchronization when the mobile station is operating in test mode. The EDGE Dynamic Power measurement requires the mobile station be put in a test mode in which it can generate a specified burst sequence.

The figure below models an example series of bursts that a mobile station has been programmed to generate.

As can be seen in the figure above there are three separate ramp segments defined, with a total burst count of thirty. The details of each ramp segment is shown in the following table.

	Ramp Segment Burst Count	Group Burst Count	Initial Expected Power (dBm)	Expected Maximum Difference (dB)
Ramp Segment 1	12	4	6	+3
Ramp Segment 2	6	1	14	-2
Ramp Segment 3	12	2	5	+1

The following programming example shows how to capture a series of bursts that a mobile station was commanded to generate.

10 Test_set=714
20 OUTPUT Test_set;"SETup:EDPower:CONTinuous OFF"     !sets  the  trigger  to  single
40 OUTPUT Test_set;"SETup:EDPower:TIMeout:STIMe 5"     !sets the  timeout  state  to  on  and  the                                                          !timeout time to 5 seconds
50 OUTPUT Test_set;"SETup:EDPower:COUNt:RSEGment 3"  !specifies  three  ramp  segments
60 OUTPUT Test_set;"SETup:EDPower:COUNt:NUMBer 12, 6, 12"    !specifies  the  number  of  bursts                                                                 !for  each  ramp  segment
70 OUTPUT Test_set;"SETup:EDPower:COUNt:GROup:SIZE 4, 1, 2"   !specifies  the  burst  group  size                                                                   !for  each  ramp  segment
80 OUTPUT Test_set;"SETup:EDPower:EMDifference 3,-2, 1"    !specifies  the  maximum  power                                                                        !difference  between  the  burst
90 OUTPUT Test_set;"SETup:EDPower:INITial:POWer 6, 14, 5"    !specifies  the  initial  expected                                                                     !power values
100 OUTPUT Test_set;"SETup:EDPower:INITial:POWer:AUTO OFF"    !tells  the  test set  to use  the                                                                 !specified  initial  power  values rather
110                                                         !than  deriving them
120 OUTPUT Test_set;"SETup:EDPower:COUNt:TOTal?"   !returns  the  total  number  of bursts                              !measure
130 !
131 OUTPUT Test_set;"INITiate:EDPower"   !Initiates the measurement
132 WAIT 1     !A one second wait is needed here to ensure the measurement
133             !is ready to start testing the generated bursts.
134             !
135 !* ************************************************************************
136 !
137 !* Trigger the mobile station to start generating the desired burst pattern.
138 !
139 !* ************************************************************************
140 OUTPUT Test_set;"FETCh:EDPower" !This obtains all the measurement results in range one,
150 !which is all that is needed for this example because the total number of bursts that are measured
160 !is less than 100.
170 !
180 ENTER 714;Integrity,Tx_power_levels
200 END

Returned Values

The result that is obtained from this program is a comma separated string of 60 values. The first 30 values in the string are Integrity Indicator values and the remaining thirty values are average transmitted power levels the mobile station generated.

Related Topics

EDGE Dynamic Power (EDP) Measurement

SETup:EDPower

FETCh:EDPower