Autorange And Manual Ranging - Keysight 3458A Assembly-Level Repair Manual

2 Operating Information

Autorange and manual ranging

In the power-on state, the multimeter automatically selects the appropriate
measurement range. This is called autorange. In many cases, you will probably
want to continue using autorange. However, you have two other ranging choices:
hold and manual ranging.
Hold
This choice allows you to shut off autoranging. To do this, let autorange choose a
range and then
Press:
When you press the blue shift key, the display's SHIFT annunciator illuminates.
NOTE
The shifted keyboard functions are printed in blue above the keys.
Notice the display's MRNG (manual range) annunciator is on. This annunciator is
on whenever you are not using autorange.
Manual ranging
The second choice lets you manually select the range. When the multimeter is in
the measurement mode (that is, the multimeter is making and displaying
measurements or the display is showing OVLD) you can change the range by
pressing the up or down arrow keys. To go to a higher range.
Press:
By repeatedly pressing the up arrow key, you can increment up to the highest
range. When you reach the highest range, pressing the up arrow key no longer
changes the range. To go to a lower range.
38
Hold
Keysight 3458A Assembly-Level Repair Manual