Agilent Technologies N9010A, Manual

Page: 24 / 107

24 Chapter 3
ACP Measurements
Measurement Procedure
Measurement Procedure
Step 1. Press
Mode
,
TD-SCDMA with HSPA/8PSK
to enable the TD-SCDMA mode
measurements.
Step 2. Press
Mode Preset
to preset the analyzer.
Step 3. Press
Input/Output
,
External Gain
,
BTS
and enter the number and
−
dB
according to the external attenuator connected to the analyzer.
Step 4. Press
Mode Setup , Radio , Device
to toggle the device to
BTS .
Step 5. Press
Meas
,
ACP
to initiate the Adjacent Channel Power measurement.
Step 6. Press
Sweep/Control
,
Gate
and toggle the
Gate
to
On
. Press
More
,
Gate
Source
and select the desired gate source
External 1
.
If no measurement is performed and only a symbol of yellow ‘*’ displays
on the top right of the screen, you need to check the gate settings. You
need the correct gate signal to make the ACP measurement.
Step 7. Press
FREQ Channel
,
2
,
GHz
to set the center frequency to 2 GHz.
Or, you can also manually set the reference frequency by pressing
Meas
Setup
,
Carrier Setup
,
Ref Carrier
and enter the carrier number to be
referenced, and pressing
Ref Car Freq
and enter the carrier frequency.
NOTE
When the number of carriers (
Carriers
) is set to 1, the
Ref Carrier
is
automatically grayed out and set to 1.
Step 8. Press
Meas Setup
to check the keys available to change the
measurement parameters from the default condition.
• Press
Carrier Setup
,
Carriers
and enter the number of carriers.
• Press
Config Carriers
to adjust the parameter settings for each
carrier, or to couple other carriers to Carrier 1 when
Carriers
is set to
greater than 1.
Step 9. Press
Meas Setup
,
Carrier Result
and enter the carrier number to display
and highlight the desired carrier power result in the text window.
NOTE
When
Carriers
is set to 1, the
Carrier Result
is grayed out.
Step 10. Press
Offset/Limits
to adjust the adjacent channel offset and test limits
parameters.
For more information about changing measurement parameters, see
N9079A TD-SCDMA with HSPA/8PSK User’s and Programmer’s
Reference
.
If you have a problem, and get an error message, see the “ Instrument