Units Terminator; Knob; Entry Block - HP 8753E User Manual

Before you can modify a function, you must activate the particular function by pressing the
corresponding front panel key or softkey. Then you can modify the value directly with the
knob, the step keys, or the digits keys and a terminator.
If no other functions are activated, the knob moves the active marker.

Units Terminator

The units terminator keys are the four keys in the right cohunn of the keypad. You must
use these keys to specify units of numerical entries from the keypad. A numerical entry is
incomplete until a terminator is supplied. The analyzer indicates that an input is incomplete
by a data entry arrow t pointing at the last entered digit in the active entry area. When you
press the units terminator key, the arrow is replaced by the units you selected. The units are
abbreviated on the terminator keys as follows:
basic units: dB, dBm, degrees, seconds, Hz, or dB/GHz (may be used to terminate

Knob

You can use the knob to make continuous adjustments to current measurement parameter
values or the active marker position. Values changed by the knob are effective immediately,
and require no units terminator.
Step Keys
You can use the step keys &) (up) and (lJ) (down) to step the current value of the active
function up or down. The analyzer defines the steps for different functions No units
terminator is required. For editing a test sequence, you can use these keys to scroll through the
displayed sequence.
Application and Operation Concepts
Figure 6-4. Entry Block