Fluke 5520A Service Manual page 242

5520A
Service Manual
3. Enter 10 MHz into the Calibrator Mainframe. Allow the power meter reading to
4. Enter the next frequency listed in Table 6-56. Allow the power meter's reading to
5. Enter 10 MHz into the Calibrator Mainframe. Allow the power meter reading to
6. Repeat steps 4 and 5 for all of frequencies listed in Table 6-56. Continue until you
7. When you have completed Columns A and B, press
Calibrator
Mainframe
Freq. (MHz)
20
50
100
125
160
200
220
235
250
300
Complete Columns A-G as follows:
A
B
C
D
E
F
G
6-102
stabilize, then enter the power meter's reading in Column B of Table 6-56.
stabilize, then enter the reading into Column A of the table.
stabilize, then enter the power meter's reading in Column B of Table 6-56.
have completed Columns A and B.
Mainframe's output. Complete Table 6-56 by performing the calculations for each
column. Compare Column G to the specifications listed in the final column.
Table 6-56. High Frequency Flatness Verification at 5.5 V
B
A
10 MHz
Enter the 437B present frequency Reading (W).
Enter the 437B 10 MHz Reading (W).
Apply power sensor correction factor for present frequency (W): CF * (Column A entry)
Apply power sensor correction factor for 10 MHz (W): CF * (Column B entry)
Compute and enter Error relative to 10 MHz (%): 100 * (sqrt(Column A entry) -
sqrt(Column B entry)) / sqrt(Column B entry)
Enter the 10 MHz rms Error (%) for 5.5 V from Table 6-55, Column C.
Compute and enter the Calibrator Mainframe Flatness Deviation (%): (Column E entry)
+ (Column F entry)
C D E
to remove the Calibrator
Calibrator
F G
Mainframe
Flatness Spec. (%)
1.50 +100 uV
1.50 +100 uV
1.50 +100 uV
2.00 + 100 uV
2.00 + 100 uV
2.00 + 100 uV
2.00 + 100 uV
2.00 + 100 uV
2.00 + 100 uV
2.00 + 100 uV