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JD700B Series User’s Guide
magnitude
RS error vector magnitude
EVM > RS EVM
High Limit
P-SS error vector magnitude
EVM > P-SS EVM
High Limit
S-SS error vector magnitude
EVM > S-SS EVM
High Limit
Downlink RS power
Power > DL RS Power
High Limit, Low Limit
P-SS power
Power > P-SS Power
High Limit, Low Limit
S-SS power
Power > S-SS Power
High Limit, Low Limit
PBCH power
Power > PBCH Power
High Limit, Low Limit
Subframe power
Power > Subframe Power
High Limit, Low Limit
OFDM symbol power
Power > OFDM Symbol Power
High Limit, Low Limit
Frame average power
Power > Frame Avg Power
High Limit, Low Limit
Time alignment error for MIMO Time Alignment Error > MIMO
High Limit
Time error
Time Error
High Limit, Low Limit
I-Q origin offset
IQ Origin Offset
High Limit
4
Optional
. You can enable alarm sound that goes off if the measurement falls outside of the limit.
Toggle the
Beep
soft key between
On
and
Off
to enable or disable the beep sound.
5
Optional
. Go to
SAVE/LOAD > Save
, and then select
Limit
to save the limit settings.
See “Using save” on page 35 for more information.
Using signal generator
If your JD700B series has the signal generator options installed with a license, you can use RF Source or
OBSAI Source, or both.
Using RF source in RFoOBSAI testing
You can use the RF Source feature to calibrate the uplink noise floor at a given point, check the uplink gain
and dynamic range, and verify the current RP3 link.
Procedure
1
Press the
MEASURE SETUP
hot key.
2
Press the
Source
soft key. Depending on your selection of measurement mode, you may need
to select
More (1/2) > Source
.
3
Press the
RF Source
soft key.
4
To set the frequency of the CW signal to be injected, complete the following steps:
Press the
Frequency
soft key.
Enter a value within the frequency range of your instrument.
JD740B series:
25 MHz
to
4 GHz
JD780B series:
5 MHz
to
6 GHz
NOTE
The frequency of the CW signal must be in the uplink band of the RRH under test.
Select the unit option from the choices:
GHz
,
MHz
,
kHz
, and
Hz
.
5
To set the output level of the CW signal to be injected, complete following steps:
