LP Technologies LPT-3000, User Manual, Page: 43 / 56

LPT-3000 Remote User
’
s Guide
43
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E-mail
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Chapter 7. Measurement guide
We will now review a few experiments that will allow an operator to use some of the functions the LPT-
3000R Spectrum Analyzer discussed above while taking simple measurements and learning how to use
the unit.
We will look at:
- Utilization of delta marker ; Comparison of signals
- Utilization of RBW ; Distinction of a small signal
- Measurement of a small signal
- Use of a Pre Amplifier
- Measurement of a Shoulder Attenuation
1. Utilization of Delta Marker ; Comparison of Signals
Using an LPT-3000R, the frequency and amplitude differences between radio, wireless telegraphy,
mobile communication devices, and CATV spectrum signals can be easily compared. Using the delta
marker function of the LPT-3000R, the power difference between two signals can be compared.
- Example of Use (Delta Marker Function)
Comparing Power differences between two signals.
⒜
Set the signal generator to a frequency of 10MHz and a level of 0dBm.
⒝
Set the LPT-3000R program as follows.
Center Frequency - 20MHz, Span Frequency - 50MHz, Reference Level - 0dBm.
⒞
Turn on Average.
⒟
Turn on Marker.
⒠
Using a mouse, place Marker1 at 10MHz and Marker2 at 20MHz.
⒡
Frequency and amplitude differences between Marker1 and Marker2 are displayed in the
marker window located at the bottom of program.