HP 8920A, Руководство пользователя

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S:\HP892XX\USRGUIDE\manual\opoverv.fb
Chapter 3, Operating Overview
Entering and Changing Numbers
Hexadecimal Values
Hexadecimal (Hex) values are used for entering some signaling parameters in the
ENCODER, such as AMPS
Filler
data field, and for specifying remote
communications parameters, such as the RADIO INTERFACE
Output Data
field. The acceptable entries for decimal values are 0 through 9 and A through F.
No unit-of-measure is associated with these values.
Hexadecimal values are either entered from the keypad (A through F are shifted
functions), or by using the
Choices
menu displayed when certain fields are
selected (such as the AMPS
Filler
field).
To Enter and Change the Unit-of-Measure
Entering the Unit-of-Measure for Settings
When a number is entered, the unit-of-measure is either specified or implied.
When the unit is implied, the current unit is used. For example; if the present RF
frequency is 250 MHz, and you want to change it to 225 MHz, you would enter
this sequence: 2 2 5 ENTER.
When the unit is specified, the units change to whatever you specify. For example;
if the present
RF Gen Freq
setting is 250 MHz, and you want to change it to 455
kHz, you would enter this sequence: 4 5 5 kHz.
Changing the Unit-of-Measure for Settings
To change the present unit-of-measure, position the cursor in front of the field and
press the key labeled with the desired unit. For example, position the cursor in
front of the
RF Gen Freq
field and push GHz or kHz to display the setting in
either of these units.