Specifications

PERFORMANCE TESTS
1 m High Frequency Test
77. Connect the Terminal Adapter to the
HP 4285A's UNKNOWN terminal with the
1 m Test Leads.
78. Move the cursor to the LEVEL
field, and set the test signal level to 0.5 V.
79. Store the OPEN CORRECTION data and the SHORT CORRECTION data, refer to
steps 48 to
54.
80. Press the 'DISPLAY FORMAT MENU' key to display the MEAS DISPLAY page.
81. Connect the
20 cm Air Line to the Terminal Adapter's OUTPUT terminal.
82. Connect the 0 S Termination to the 20 cm Air Line.
83. Move the cursor to the LEVEL field, and set the test signal
level to 1 V.
84. Move the cursor to the FREQ field, and set the test frequency to 10 MHz.
85.
Press the TRIGGER key, and confirm that the HP 4285A's reading is within the
specified test
limits listed in Table 1-10.
86. Perform the test for all settings listed in Table 1-10, by repeating steps 83 to step
85 for each listed setting.
Table 1-10. Impedance Measurement Accuracy Test Limits
(1 m High Frequency Test)
Test Test
Signal Test Limits
Frequency
Level
Cp
D
10 MHz 1 V C.V.±0.208 pF
±0.O149
10
MHz
2 V C.V.±0.194 pF
±O.O139
30
MHz
1 V C.V.±0.816 pF
±0.O583
30
MHz
2 V C.V.±0.789 pF
±0.O564
C.V.:Calibrated Value at 1 MHz, using an HP 4284A
1-21