Boonton 9240 RF Voltmeter - Manual (Page 34)

Boonton 9240 Series RF Voltmeter
Figure 3-5. Model 9240, Command Set
Last Menu Operation. In keeping with minimum key stokes to perform a function repeatedly, the control program can
remember the last menu the user was at prior to returning to the measurement display. In doing this submenu functions can be
quickly selected and parameters changed getting the user back to the measurement display faster.
For example, suppose the user steps through a series of voltage levels while manually changing ranges. Pressing the <Enter>
key in the measurement mode brings up the Active CHANNEL Menu. To hold a measurement range press the <Down Arrow>
key until the cursor is pointing RANGE. Pressing <Enter> allows this parameter to be set to the desired range. In this example
the voltage measured will vary from -35 dBm to -25 dBm (Z
0
= 50) in 1 dB steps. So the initial range setting is set to range 2
then pressing <Enter> sets the range. Ressing the <Menu> key at this time returns to the measurement display. As the voltage
is increased it reaches the overrange limit and the “-HIGH-“ message is displayed. At this point prenting the <Enter> key
returns the user to the previous CHANNL Menu item, in this case RANGE. The user can now edit the range parameter and
return quickly to the measurement display, simplifying the ease of use.
In this example multiple key strokes were eliminated from previous instrument implementations cutting down time on
instrument configuration providing the user expedient results.
Once in a submenu, the previous menu can always be reached by depressing the <Up Arrow> until RTN or escape to the
parent menu using the <Left Arrow> key. If the user exits out to the measurement screen by this method, pressing the <Menu>
key will bring up the top level menu.
Getting Started
3-8