PowerXpert™ Help : Verifying MA241xxA, MA242x8A Performance : Linearity Test for MA24108A/118A/126A
 
Linearity Test for MA24108A/118A/126A
The linearity correction of the MA24108A, MA24118A, or MA24126A is compared to a thermal power sensor, which has very good inherent linearity over a power range of about –20 dBm to +10 dBm. For this reason, the MA24108A, MA24118A, or MA24126A is compared to the thermal sensor in two ranges, keeping the power levels to the thermal sensor in the range of –17 dBm to +5 dBm, while the power to the MA24108A, MA24118A, or MA24126A varies from about –26 dBm to about +14 dBm.
Test Procedure
1. Set up the equipment as follows (refer to Figure: Linearity Test Setup 1 for an illustration and Table: Required Equipment for MA24108A, MA24118A, MA24126A for the required equipment):
a. Connect the reference power sensor to the reference power meter using the appropriate cables.
b. Connect the USB cable between the personal computer with the PowerXpert application installed and the MA24108A, MA24118A, or MA24126A power sensor under test.
c. Launch the PowerXpert application.
d. Turn the power on to all of the instruments and allow them to warm up for the amount of time specified in the instrument’s respective manuals.
e. Reset or Preset all of the instruments.
f. Configure the reference meter and sensor to measure a CW signal.
g. Perform a sensor Zero and a 1 mW reference calibration on the reference sensor and meter per the manufacturer’s instructions.
h. Perform a low-level Zero of the MA24108A, MA24118A, or MA24126A by disconnecting the it from the synthesizer, clicking the Zero button on the PowerXpert application, and waiting for the Zeroing message to close.
i. Connect the power splitter to the output of the synthesizer, and connect the 10 dB attenuator to the reference arm of the splitter output.
j. Connect an N(f) to K adapter (if required) to each power sensor.
k. Connect the reference sensor and adapter to the 10 dB attenuator.
l. Connect the MA24108A, MA24118A, or MA24126A and adapter (if required) to the other splitter output.
m. Set the synthesizer CW frequency to 50 MHz.
n. Set the synthesizer leveled output power to +20 dBm or highest leveled power available (do not exceed +20 dBm).
o. Increase averaging of the DUT sensor by entering “16” in the PowerXpert application, and then click Apply above settings.
 
Linearity Test Setup 1
Index
Description
1
Reference Power Meter
2
Reference Power Sensor
3
K to N Adapter (if required)
4
10 dB Attenuator
5
Power Splitter
6
K to N Adapter (if required)
7
PC with Anritsu PowerXpert Application
8
Synthesizer
2. Apply the Cal factor to the reference sensor per the manufacturer’s procedure.
3. Apply the Cal factor by entering the frequency of the measurement in GHz.
4. Turn Off the synthesizer’s RF output and perform a low-level Zero of both the Reference sensor and the MA24108A, MA24118A, or MA24126A.
5. Turn On the synthesizer’s RF output.
6. Record data for the first 20 dB range as follows:
a. Record the power reading by the reference meter in column A of Table: Measurement Results (50 MHz).
b. Record the power reading by the MA24108A, MA24118A, or MA24126A in column of Table: Measurement Results (50 MHz).
c. Set the synthesizer power to +15 dBm.
d. Record the reference meter and the MA24108A, MA24118A, or MA24126A power sensor readings in Table: Measurement Results (50 MHz).
e. Repeat the measurement of Step 6 for synthesizer output levels of +10, +5, and 0 dBm.
 
Note 
The MA24108A, MA24118A, or MA24126A power measured at 0 dBm will be used in Step 7e, below.
7. Set up the test for the second 20 dB range as follows:
a. Remove the 10 dB attenuator from in between the reference sensor and splitter and connect the reference sensor (with adapter, if required) directly to the splitter.
b. Remove the MA24108A, MA24118A, or MA24126A from the splitter and connect the 10 dB attenuator between the splitter and the power sensor. See Figure: Linearity Test Setup 2.
c. Turn Off the synthesizer’s RF output and perform a low-level Zero of both the Reference sensor and the MA24108A, MA24118A, or MA24126A.
d. Turn On the synthesizer’s RF output.
e. Set the synthesizer output level to +10 dBm, then adjust its power level until the sensor/meter under test reads as close as possible to the 0 dBm value obtained above in Step 6.
Linearity Test Setup 2
Index
Description
1
Reference Power Meter
2
Reference Power Sensor
3
K to N Adapter (if required)
4
Power Splitter
5
10 dB Attenuator
6
K to N Adapter (if required)
7
PC with Anritsu PowerXpert Application
8
Synthesizer
8. Record data for the next 20 dB range:
a. Read and record the power indicated by the reference meter in Table: Measurement Results (50 MHz).
b. Lower the output power level of the synthesizer to +5 dBm.
c. Record the reference meter and the MA24108A, MA24118A, or MA24126A power sensor readings in Table: Measurement Results (50 MHz), columns A and B respectively.
d. Repeat the measurements of step 8 for synthesizer output levels of 0, –5, and –10 dBm.
Measurement Results (50 MHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24108A, MA24118A, or MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
9. Perform the calculations and operation check as follows:
a. Subtract the Reference Power Measurement of row 5 from the Reference Power Measurement of row 6. Record this value in the Correction column of rows 1 through 5.
Note 
The Correction column of rows 1 through 5 should all have the same value.
The Correction column of rows 6 through 10 have values of 0.
b. Add the Reference Power Measurement and Correction values of row 1 and record the result in the Corrected Reference Power Measurement column of row 1.
c. Repeat Step 9b for rows 2 through 10.
d. Subtract the MA24108A, MA24118A, or MA24126A Measurement of row 1 from the Corrected Reference Power Measurement of row 1 and record the result in the Difference Calculation column of row 1.
e. Repeat Step 9d for rows 2 through 10.
f. Find the largest (most positive) value in the Difference Calculation column and record this value next to the word Max in row 11.
g. Find the smallest (least positive or most negative) value in the Difference Calculation column and record this value next to the word Min in row 12.
h. Subtract the Min value from Step 9g from the Max value from Step 9f and record the result next to the word Delta in row 13.
i. The Delta result should be less than 0.3 dB. If it is larger, contact Anritsu customer service.
10. Repeat the entire measurement and calculations with synthesizer frequency settings of 2 GHz, 4 GHz, 6 GHz, 10 GHz, 12 GHz, 14 GHz, 16 GHz, 18 GHz, 20 GHz, 22 GHz, 24 GHz, and 26 GHz.
Refer to Linearity Test MA24208A and MA24218A for the MA24208A and MA24218A power sensor linearity testing.
Measurement Results (2 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24108A, MA24118A, or MA24126A Measurement
(dBm)
C–D


Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (4 GHz) 
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24108A, MA24118A, or MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (6 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24108A, MA24118A, or MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (8 GHz) 
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24108A, MA24118A, or MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (10 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D

MA24118A, MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (12 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D

MA24118A, MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (14 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D

MA24118A, MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (16 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D

MA24118A, MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (18 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D

MA24118A, MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (20 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (22 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (24 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):
 
 
Measurement Results (26 GHz)
Row
#
Synthesizer Power Level Setting
(dBm)
Attenuation in Reference Arm
(dB)
A

Reference Power Measurement
(dBm)
B
= (A6–A5)


Correction
(dB)
C
= (A+B)
Corrected Reference Power Measurement
(dB)
Attenuation in Test Arm
(dB)
D
MA24126A Measurement
(dBm)
E
= (C–D)

Difference Calculation
(dB)
1
+20
10
 
 
 
0
 
 
2
+15
10
 
 
 
0
 
 
3
+10
10
 
 
 
0
 
 
4
+5
10
 
 
 
0
 
 
5
0
10
 
 
 
0
 
 
6
adjust per Step 7e
0
 
0
 
10
 
 
7
+5
0
 
0
 
10
 
 
8
0
0
 
0
 
10
 
 
9
–5
0
 
0
 
10
 
 
10
–10
0
 
0
 
10
 
 
11
Max:
 
12
Min:
 
13
Delta (E11 – E12):