GSM/GPRS/EDGE SIGNAL ANALYZER
10
JD7105B Base Station Analyzer
FREQ/DIST
CENTER FREQUENCY:
Changes the center frequency setup. Values can be entered with the
numeric keys, the rotary knob, or the arrow keys. When using the numeric keys, the input is
completed by selecting one of the unit soft keys including GHz, MHz, kHz, and Hz. When using
the rotary knob or the arrow keys, the frequency changes in a predefined frequency step. The
frequency step can be configured by selecting the
Frequency Step
soft key.
CHANNEL NUMBER:
Enters a channel number and selects the
Forward
or
Reverse
soft key.
When using the rotary knob or the arrow keys, the channel changes in a predefined channel step.
The channel step can be configured by selecting the
Channel Step
soft key.
FREQUENCY STEP:
Defines the moving step size of the
Center Frequency
when using the
rotary knob or the arrow keys. The step size can be entered by using numeric keys and the unit
soft keys.
CHANNEL STEP:
Defines the moving step size of the
Channel Number
when using the rotary
knob or the arrow keys. The step size can be entered by using numeric keys and the
Enter
soft
key.
CHANNEL STANDARD:
When the channel standard is selected from the list, the center
frequency information on the display screen will be mapped accordingly to the selected channel
standard. The channel standards available in the instrument are listed in the Appendix C – Band,
Frequency & Channel Standard.
Setting Amplitude
Step
Description
1.
Set the reference level
AMP/SCALE
[Reference Level]
Enter a reference level value
[dBm]
or
ENTER
Press the
AMP/SCALE
hard key.
Press the
Reference Level
soft key.
Use the numeric keys or the rotary knob that changes in a 10
dB step.
Press the
dBm
soft key or the
ENTER
hard key.
2.
Set the attenuation level
[Attenuation]
<Auto>
or
<Manual>
Enter an attenuation value
Press the
Attenuation
soft key. The
Auto
mode is set by
default. This key toggles between the
Auto
and
Manual
.
Press the
Attenuation
soft key to highlight the
Manual
mode
and change the attenuation value to optimize S/N.
Use the numeric keys or the rotary knob that changes in a 5
dB step. The attenuation setting range is 0 to 55 dB.
