Giga-tronics 2500B Series Microwave Signal Generators
CW Operation
Operation Manual, Part Number 34737, Rev C, June 30, 2011
Page 25
Generate a CW Signal
Step
Action
4.
The step attenuator, if installed, can be set to one of two modes:
Auto Mode:
In this mode, the step attenuator automatically switches attenuation state as the
instrument’s output power level setting is varied. To set the step attenuator so that it
automatically switches attenuation levels with changes in output power level;
1.
Press
.
2.
Select
System Menu.
3.
Select
Attenuation.
4.
Use or
Attenuation to select Auto.
Fixed Mode:
In this mode, the step attenuator is set to a fixed level of attenuation. The
maximum and minimum settable range is +25 dB to -20 dB relative to the attenuator setting. To
set the step attenuator so that it remains fixed at a desired level of attenuation
1.
Press
.
2.
Select
System Menu.
3.
Select
Attenuation.
4.
Use , or
Attenuation to select the level of attenuation.
5.
Return to the main CW menu if necessary by pressing
.
6.
Select
Power, and enter 1.00 dBm:
1.
On the numeric keypad (see Figure 3 on page 11), enter 1.00.
2.
Press the GHz/nSec/dBm units button
NOTE:
You can also change the value by using the
keys, or
.
NEXT STEP
:
The insertion/conversion loss compensation features of the 2500B includes the:
Power Offset feature, which is used to compensate for a fixed level of insertion or conversion loss;
Power Slope feature, which is used to compensate for insertion or conversion loss that linearly varies with
frequency.
7.
If YOU WANT to use the insertion/conversion loss compensation features of the 2500B:
Perform either, or both, Step 8 and Step 9 as necessary.
If you DO NOT want to use the insertion/conversion loss compensation features of the 2500B:
Go to Step 10.
8.
To compensate for a fixed level of loss
;
1.
Select
Power Offset.
2.
Enter the desired loss correction using the numeric keypad,
, or
. Note that when a
correction factor is entered,
OFS
appears in the upper right corner of the display.
Softkey
Softkey
CW
Softkey
Softkey
Softkey
System
Softkey
Softkey
Softkey
System
