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