Anrtisu Cell Master MT8212B, Руководство пользователя, Страница: 165 / 294

Preamplifier Measurement Example
This section provides an overview of how to detect a low-level signal with the help of the
preamplifier of a MT8212B Cell Master.
Required Equipment
q
MT8212B Cell Master
q
Test Port extension cable, Anritsu 15NNF50 – 1.5C
q
A signal source (Anritsu 69xxxB Synthesized Signal Generator or equivalent)
Procedure
Step 1. Press the MODE key and use the Up/Down arrow key to select the
Spectrum
Analyzer
mode. Press the ENTER key to select.
Step 2. Connect the RF output of the signal source to the
RF In
port of the MT8212B.
Step 3. Press the
Center
soft key. Enter the center frequency of the measurement using
the Up/Down arrow key or the keypad. Select the
GHz
,
MHz
,
kHz
, or
Hz
soft key
to accept the center frequency input.
Step 4. Press the
Span
soft key and use the Up/Down arrow key or the keypad to enter a
span of 1 MHz.
Step 5. Set the signal source output level to –120 dBm.
Step 6. Press the AMPLITUDE key and select the
Ref Level
soft key to set the reference
level to –80 dBm.
Step 7. Press the
Scale
soft key and set the scale to 10 dB/division.
Step 8. Press the
Atten/Preamp
soft key and set the attenuation to
Auto
and press the
Back
soft key.
Step 9. Press the MEAS/DISP key, the
Trace
soft key, and the
Detection
soft key and
set the detection mode to
Positive Peak
.
Step 10. Press the
Back
soft key twice, then the
Bandwidth
soft key. Select the
RBW Man-
ual
soft key and set the RBW to 100 Hz.
Step 11. Select the
VBW Auto
soft key.
Step 12.
Press the AMPLITUDE function hard key.
Step 13. Select the
Atten/Preamp
soft key, then the
Preamp Control Manual
soft key.
Press the
Preamp On/Off
soft key to turn the preamplifier on or off.
5-4
Chapter 5 Spectrum Analyzer Measurements