Fluke 8508A - Multimeter Inputs; Input; Using the INPUT Key

Making Measurements
Multimeter Inputs
3
Multimeter Inputs
Input
The
Input key and its menu allow you to select either the Front or Rear panel terminals as
the input to the Multimeter: The scan softkey gives access to dual-channel measurement
and processing selection which produces a single result.
Using the INPUT Key
Press the
Input key to see the INPUT menu:
adj113f.eps
INPUT key Menu
 Selects Front Input terminals only.
 Select Rear Input terminals only.
Note
Total Isolation State -You can put the Multimeter in a
state of total isolation by deselecting all the selections
on the
INPUT and SCAN menus. In this state, the
Multimeter has no input.
This state is useful in a remote control system, to
isolate the Multimeter from the system’s analog bus.
 Readings are taken alternately from each channel, then measurements are
combined as per the selection.
Note
Selecting Front or Rear cancels any Scan selection.
 When On, the internal guards are decoupled from Lo and connected to the
Guard terminal. Operation of Guard in the resistance function is modified,
and includes Ohms Guard. Refer to the ‘making measurements’ section for
each function for more details.
 Initiates a series of measurements to determine and correct for the Input
Zero and save the result in volatile memory. An indication of the
application of an input zero will appear on the left-hand display.
Independent zero corrections are provided for Front and Rear terminals
and, when in Ohms functions, 2 wire and four wire connections and normal
and low current operation. Input Zero may be up to 0.5 % of Range.
For AC always use the lowest possible range. After the Input Zero all
subsequent readings will be RSS corrected by this zero.
 Initiates a series of measurements on each range in the function starting
with the highest range, to determine and correct for the Input Zero for each
range.
Note
Input Zeros - Input zero stores are cleared on power up, and may also be
cleared by the user from the CLEAR menu, accessed by pressing the CLEAR
key.
3-29