Filed Strength Mode Setting; Insertion Loss Mode - Deepace KC901M User Manual

RBW, so it is recommended to set RBW as 10KHz unless specially required in other
situations.
In the menu of S21, item (dB/div) can be used for switching the range of
ordinate.
2.8 Field Strength Mode Settings
Field strength mode is measuring the level of input port signal. Field strength's
value derives from the calculation of input level and the antenna's coefficient.
Antenna's coefficient is mainly related to antenna's gain and frequency. So make sure
that the instrument gets the antenna's gain in order to obtain the accurate field
strength.
After enter field strength mode (FIELD), there is an item (ANT GAIN) in the menu.
Press the button and choose the sign with "+/-" in the menu, next enter the antenna's
gain on the number keyboard.
The update speed of the number display can be set in 3 levels: FAST, MEDIUM and
SLOW. MEDIUM is recommended. The update speed of the scale-meter will not be
influenced by this setting, but for observing the transient strength change of signal
strength.
Warning
KC901M is a network analyzer, so there is no protection for local oscillation's
leak. If used for observing the spectrum or field strength, there must be local
oscillation signal flow into the receiving antenna and its strength degree can reach
-10dBm. Its frequency is at 109.65MHz plus or minus the receiving frequency. User
should estimate the consequences and if needed, use Po. ATT function of internal
attenuator or avoid the interfering frequency points by setting local oscillation as
well as adding a band-pass filter.

2.9 Insertion Loss Mode

Insertion loss test is actually a single point S21 measurement.
Firstly, enter field strength mode, and then choose "Insertion" on the bottom
right corner on the screen; then there will occur a "GEN ON" sign. The data on the left
side of the screen is the absolute level value, while the data on the right is the relative
level. To calibrate, connect the testing cable directly to each RF port, and then choose
AUTO CAL in the menu. After calibrating, connect the device under the test to the
testing cable. Reading at the right is insertion loss.
2.10 Data Saving
To save the data, insert a micro SD (TF) card into the instrument.
In test function, press combined key SHIFT+1 to save the current screenshot, and
the test results and settings as a chart.
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