Sweep Time; Output Power - Keysight N9912A User Manual

Sweep Time

The fastest possible sweep time is always used as the default setting. Use the Min
Swp Time setting to slow the sweep time when measuring long lengths of cable.
Learn more in the Supplemental Online Help:
http://na.support.keysight.com/fieldfox/help/FieldFox.htm
The actual sweep time is shown on the FieldFox screen. See the Screen Tour on page
18. To increase the sweep time, enter a value that is higher than the actual sweep
time. The increase will not be exactly the amount that you enter, as the actual sweep
time is the composite of many factors.
NOTE Measurement speed specifications do NOT apply in Temperature Control Mode.
Learn more on page 14.
How to set Sweep Time
 Press Sweep 3.
 Then
 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
Output power is NOT leveled with any of the power settings.
 Press Meas Setup 4.
 Then
 Then
CAT (Cable and Antenna Test) Mode
Min Swp Time.
Power
Output Power
High (Default setting) Sets output power to the maximum achievable power at
o
all displayed frequencies. Please see the FieldFox Specifications for expected
power levels.
Low Sets output power to approximately –27 dBm,
o
Man Set output power to an arbitrary value,
o
Then press
Nominal Power
o
Then enter a value using the numeric keypad, the ▲|▼ arrows, or the rotary
o
knob.
Press Enter.
o
25