How To Select Special Functions - HP 8642A Operating Manual

Operation Model 8642A/B
Special Functions (cont'd)
Display
I IE. inT + EKT LOW.RRTE F17] DH
The Signal Generator displays the code and description of Special Function 11 2. This
special function is not turned on with the Help function (note the absence of the SPCL
annunciator). Now you can turn the Knob or use the Step keys to view the codes and
descriptions of other special descriptions.
SPCL
How to Select Special Functions
SPCL ( [ SHIFT 1 [ - 1 ) and the desired special function numeric code. (The SPCL
annunciator will be displayed below the special function description after the special
function is selected.)
Example
Turn on Special Function 9 (Attenuator Range Hold On).
LOCAL
(keys)
1 SHIFT 1
DATA
SPCL ( ~ \
SP9
Display
9. RTTEfl RRHEE HQLH DH
Attenuator Range Hold has been selected. Note the display of the SPCL annunciator.
Press the [ SHIFT I key twice to return the display to the current instrument state (if
desired).
You Can Disable the Automatic Special Description Display
The description that occurs each time a special function is selected can be disabled
using Special Function 11 1 (Disable the Automatic Special Function Verification
Display).
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