Boonton 4240 RF Power Meter - Manual (Page 14)

Boonton 4240 Series RF Power Meter
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ne key press operations. To provide for ease of use operation of the instrument functions that
mply by
pressing the Zero/Cal and REF Level key respectively.
se the measured reading as the zero offset. This allows
for fast zeroing of the channel so that the needed measurement can be performed faster.
ng the Menu key followed by the Zero/Cal
key. From there the user chooses the function (Zero, Fixed Cal, Auto Cal) and the channel to
n measuring system gains
and losses. One key press of the Ref/Level key makes this job easier and faster to perform. Simply
connect the active channel’s sensor to the input signal of the system under test. Press the
Ref/Level key and the reference level is set! Next connect the sensor to the system output and read
the gain or loss directly from the reference level measurement.
The REF Level sub-menu can be displayed by first pressing the Menu key followed by the REF
Level key. From there the user may LOAD or SET the reference level on either channel.
utput. A 0 to 10 volt dc output, proportional to the measurement values, is
ication to a chart recorder. The Recoreder Output is selectable to track either
of interface parameters
ntrol
series and 4220 line of power meters.
• me instrument configurations are used
repeatedly, up to 10 complete setups can be stored and recalled.
Simple Instrument Setup and Operation. In the operating mode the functions: Averaging Time,
and Frequency menus are selected with a single keystroke. Values for these parameters are
displayed and can be adjusted by using the arrow and enter keys. Additional operating parameters
can be modified through the menu driven structure accessible via the <Menu> and <Sensor> keys
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are used often are performed with a single push of a button. Common operations such as Zeroing
the channel, performing a 0 dBm calibration and setting a Reference Level can be done si
Zero/Cal – When measuring low level signals it is important to zero the channel prior to
measuring the signal. When the Active Channel is measuring levels below approximately -50
dBm, depressing the “Zero/Cal” key will u
The user may also perform a 0 dBm calibration by one key stroke of the “Zero/Cal” button.
Simply connect the sensor to a 0 dBm source and press the “Zero/Cal” key. The instrument detects
that a 0 dBm signal is present and sets a calibration factor accordingly to indicate 0.00 dBm.
The Zero/Cal sub-menu can be displayed by first pressi
perform the calibration on.
REF Level – Often relative measurements are required especially whe
• Chart Recorder O
available for appl
channel 1, channel 2 or the active channel.
• Flexible Remote Control. All instrument functions except power on/off can be controlled
remotely via the standard GPIB bus interface or RS232 connection. Setup
is menu driven; front panel indicators keep the user informed of bus activity. Remote co
ramming is performed using industry-standard SCPI programming syntax. The prog 4230
emulation mode is provided for users that prefer back compatibility with legacy Boonton products
as the 4230 such
Stored Configurations. For applications in which the sa
General Information
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