In-band/out-of-chan nel mea sure ments 5-7 – Anritsu S331C User Manual
Page 70
Step 3. Press the
MODE
key.
Step 4. Use the Up/Down arrow key to select the Spectrum Analyzer mode and press
ENTER
.
Step 5. Select the appropriate reference level, input attenuation level, resolution band-
width, and video bandwidth.
Step 6. Press the
MEAS
key.
Step 7. Once in the MEAS menu, press the
ACP
soft key.
Step 8. Select the center frequency by pressing the
CENTER FREQ
soft key and enter
the desired center frequency.
Step 9. Select the main channel bandwidth by pressing the
MAIN CHANNEL BW
soft
key and enter the desired main channel bandwidth. For an IS-95 signal enter
1.23 MHz.
Step 10. Select the adjacent channel bandwidth by pressing the
ADJ CHANNEL BW
soft
key and enter the desired adjacent channel bandwidth. For an IS-95 signal enter
30 kHz.
Step 11. Select the channel spacing by pressing the
CHANNEL SPACING
soft key and
enter the desired channel spacing. For an IS-95 signal, enter 885 or 1.98 MHz.
Step 12. Make the measurement by pressing the
MEASURE
soft key. The Site Master
will display the measurement results in the display area.
The table below provides typical settings for measuring a CW and a IS-95 CDMA signal.
5-5
Chapter 5 Spectrum Analyzer Measurements
CW Wave
IS-95 CDMA Signal
Reference Level
–15 dBm
–10 dBm
Input Attenuation Level
Auto
Auto
Resolution Bandwidth
Auto
10 kHz
Video Bandwidth
Auto
30 kHz
Table 5-2.
ACPR Measurement Settings