3 operation, 3 operation -6, Boonton 9240 series rf voltmeter – Boonton 9240 RF Voltmeter User Manual

Page 32: Getting started 3-6

Boonton 9240 Series RF Voltmeter

3.3 Operation

The Model 9240 can be configured for operation via the six switches on the front panel;

(

single key press operation)

Pressing a key will bring the instrument to the next submenu. A flow chart of the instrument’s command structure is
shown in figure 3-5. The

key serves as an ESCAPE key to cancel the current operation from any point and return
to the measurement screen.

To change a value , use the arrow keys to position the cursor to the desired parameter. Press the key and then use
the up/down arrow keys to scroll through the parameter list. When a number is to be entered, use the left/right arrow keys
to position the cursor under the number that is to be changed, then use the up/down arrow keys to increment/decrement
the number. Holding the up/down arrow key will initiate repeat mode to allow rapid movement through the selection.

Within a submenu, the

∧ ∨ indicators are displayed in the upper right potion of the display when the current screen has

additional information that can be obtained by scrolling with the up/down arrow keys. Three conditions are possible:

∧ Use the up arrow key to scroll the screen upward for additional information.

∨ Use the down arrow key to scroll the screen downward for additional information.

∧ ∨ Use the up/down arrown keys to scoll the screen upward/downward for additional information.

Additonal freatures introduced in the 9240 are the ‘single key press operation’ for the and keys. See
section 3.3.5 and 3.3.6 for further details. Also the arrow keys and the key have special functions while
measurements are displayed.

Arrow keys group. Selection of the Active Channel and the channel’s measurement units may be accomplished by use of
the arrow keys while in the measurement mode of operation.

Up Arrow key. Moves the Active Channel cursor up on the display. For example if the active channel is set to 2, pressing
the key will cause channel 1 to be the active channel.

Down Arrow key. Moves the Active Channel cursor down on the display. For example if the active channel is set to 1,
pressing the key will cause channel 2 to be the active channel.

Left Arrow key. Pressing this key sets the Active Channel to Linear measurement units (Volts, %).

Right Arrow key. Pressing this key sets the Active Channel to Log measurement units (dBm, dBr).

Enter key. When in the measurement mode of operation pressing the key causes the instrument to drop down
into the CHANNELS menu using the Active Channel as a pointer to the associated channels menu. This provides faster
settings of channel parameters such as units, resolution, duty cycle, offset, range, alarm setting and limits.

Getting Started

3-6