Anritsu 682XXB - Manual (Page 135)

3. Make the following selections on the 562 Network
Analyzer to normalize the step sweep.
a. Press CALIBRATION and follow the menu on
the display.
b. Press AUTOSCALE.
c. Press OFFSET/RESOLUTION and set the
Resolution to 0.2 dB.
4. On the 683XXB, press Analog to select the ana-
log sweep mode.
5. Adjust the ALC Slope DAC for frequencies
£2 GHz as follows:
a. At the
$
prompt on the PC display, type:
calset
and press .
b. Type:
1
and press .
c. Select item 10 (ALC Slope Het) from the menu.
Follow the instructions presented at the bot-
tom of the screen to enter a new DAC setting
value.
d. Enter different DAC setting values to find the
setting that adjusts the slope so that the power
at the start and stop frequencies match the
normalized straight line in step sweep mode.
e. When finished, exit the program.
f. Type:
X
and press to exit the calset
menu. (The
$
prompt will appear on the
screen.)
g. Record step completion on the Test Record.
6. Set up the 683XXB as follows:
a. Reset the instrument by pressing SYSTEM
then Reset . Upon reset the CW Menu is dis-
played.
b. Press Edit L1 and set L1 to 5 dB less than
maximum leveled power for the instrument be-
ing calibrated (refer to Table 3-2, page 3-6).
c. Press Step . The Step Sweep Menu is dis-
played.
d. Press Edit F1 and set the F1 start frequency
to 2.0 GHz.
e. Press Edit F2 and set the F2 stop frequency
to upper limit of the 683XXB.
682XXB/683XXB MM 4-25
ALC SLOPE
CALIBRATION CALIBRATION