U3402A-ABA AGILENT TECHNOLOGIES, U3402A-ABA Datasheet - Page 62

• Manufacturer Part Number: U3402A-ABA
• Description: English Users And Service Guide 3400
• Manufacturer: AGILENT TECHNOLOGIES

Specifications of U3402A-ABA

• Rohs Compliant: NA
• For Use With: U3400 Series U3402A Dual Display Multimeter

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Operations and Features
dBm
The logarithmic dBm (decibels relative to one milliwatt) scale is often used in
RF signal measurements. The multimeter’s dBm operation takes a
measurement and calculates the power delivered to a reference impedance
(typically 50, 75, or 600 ). The formula used for conversion from the voltage
reading is:
dBm
Figure 2-13 Typical dBm operation display
The default reference impedance value is 600 . You can select the following 21
reference impedance values:
2 , 4 , 8 , 16 , 50 , 75 , 93 , 110 , 124 , 125 , 135 , 150 , 250 ,
300 , 500 , 600 , 800 , 900 , 1000 , 1200 , or 8000 ..
If reference impedance 2 , 4 , 8 , or 16
displayed in watt (power).
Numeric results are in the range of ±120.000 dBm with 0.01 dBm resolution
shown, independent of the number of digits setting.
The dBm operation can be applied to DCV and ACV measurement functions
only. The multimeter displays the dBm operation on the primary display and
displays the reference impedance selection on the secondary display.
Procedure 1
1 Press
2 Use
3 Press
= 10 x Log
and
10
to store the selected value and read the display.
[ 1000 x (Reading
to enter dBm operation.
to select the desired reference impedance.
2
/ reference impedance
is selected, the dBm operation is
U3402A User’s and Service Guide
)
]