Aeroflex 3500A, Руководство по обслуживанию

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S u b j e c t t o E x p o r t C o n t r o l , s e e C o v e r P a g e f o r d e t a i l s .
2-47
E. RF Power Meter Calibration (cont)
62. Set the RF Signal Generator to 100 MHz, CW, -50 dBm and RF OFF.
63. Set the RF Power Meter to 100 MHz, Relative OFF and Offset value to 100 MHz coupled
port attenuation recorded in Step 7.
64. Set RF Power Amplifier Gain to maximum, ALC to OFF and Power to OFF.
65. With the System Menu displayed, press the F4 “Selftest” Key to display the Self Test
Menu.
66. Press the 3 Key to display the Calibration Screen.
67. Enter the Calibration Password ( 30203 ). Press the F1 “Done” Key to display the Internal
Calibration Menu.
68. Press the 5 Key (POWER CAL FREQ RESPONSE).
69. Move the cursor to the RF Power Meter and press the F1 “Zoom” Key.
70. Move the cursor to the Units: field.
71. Press the F1 “Edit” Key to highlight the field. Using the Arrow Keys (   ), select dBm.
Press the F1 “Done” Key to store the setting.
72. Press the F4 “Zero” Key. Follow instructions.
73. Press the F5 “Return” Key.
74. Press the F2 “Return” Key to display the Calibration Menu.
75. Press the 5 Key (POWER CAL FREQ RESPONSE).
76. Press the F4 “Zero” Key to clear the previous calibration values.
77. Press the F5 “Next” Key until the displayed Index is 0.
NOTE
Index: numbers increment by one and the MHz: indicates the cal point
frequency.
78. Turn the RF Power Amplifier to ON.
79. Set the RF Signal Generator to RF ON.
80. Adjust the RF Signal Generator level until the power into the T/R Connector, displayed on
the RF Power Meter, is equal to the Target dBm value (
±
0.3 dB).
81. Move the cursor to the Actual dBm field. Pr ess the F1 “Edit” Key to highlight the field.
Change the Actual dBm value to match the RF Power Meter value. Press the F1 “Done”
Key. Press the F4 “Copy” Key to store the setting.
82. Press the F5 “Next” Key to move to the next cal point.
NOTE
Index: numbers increment by one and the MHz: indicates the cal point
frequency.
83. Set the RF Signal Generator to RF OFF.
84. Set the RF Amplifier to OFF.
85. Replace 100 MHz Low-Pass Filter with 300 MHz Low-Pass Filter in Test Setup.
86. Set the RF Signal Generator to 300 MHz.