26 FieldFox User’s Guide
How to set Sweep Time
Press Sweep 3.
Then Min Swp Time.
Enter a value using the numeric keypad.
Press a multiplier key. Learn about multiplier abbreviations on page 19.
Output Power
Set the power level out of the FieldFox to High, Low, or manually set power level
to a value between High and Low.
Generally, the high power setting is used when measuring passive, high-loss
devices to place the signal farther from the noise floor. However, for devices that
are sensitive to high power levels such as amplifiers, use the Low power setting.
For best measurement accuracy, use the Manual power setting at -15 dBm. After
calibration, the power level can be decreased for amplifiers, or increased for
higher dynamic range.
Caution Power Level settings in this mode will NOT change Power Level settings in other
modes. To help prevent damage to your DUT, use caution when changing modes
with your DUT connected to the FieldFox test ports.
How to set Output Power
Press Meas Setup 4.
Then Power
Then Output Power
o High (Default setting) Sets output power to the maximum achievable power
at all displayed frequencies. Output power is NOT FLAT across the displayed
FieldFox frequency span. Please see the FieldFox Specifications (page 214)
for expected power levels.
o Low Sets output power to approximately –45 dBm, FLAT across the
displayed FieldFox frequency span.
o Man Set output power to an arbitrary value, FLAT across the displayed
FieldFox frequency span. If flattened power can NOT be achieved, a warning
message and beep occurs. To achieve a flattened output power, reduce the
power level or stop frequency.
o Then press Power Level
o Then enter a value using the numeric keypad, the ▲|▼ arrows, or the rotary
knob.
o Press Enter.
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