Display; Display Format; Edit Key - Keithley SourceMeter 2400 User Manual

1-14 Getting Started
When the OUTPUT is turned OFF, the fan will either run at the low speed or stay at the
speed it was at when the output was on (current range dependent). This speed option is set
from the FAN selection of the GENERAL MENU. (See
NOTE If the Model 2420, 2425, 2430, or 2440 overheats, the output will trip and the
cooling fan will run at high speed (regardless of the speed option setting). See
Section 6,

Display

Display format

The SourceMeter display is used primarily to program source and compliance values and
display measured readings. Annunciators, which are located along the top of the reading/
message display, indicate various states of operation, as covered previously in
panel summary."
On power-up, the top (primary) display is used for measurements when the output is on
(with the output off, "OFF" is displayed). The bottom-left display is used for the pro-
grammed source value (Vsrc or Isrc), and the bottom-right display is used for the pro-
grammed compliance (Cmpl) limit.
Reading information can be displayed using either engineering units or scientific notation
in either fixed- or floating-point format. Use the GENERAL/NUMBERS selection of the
main MENU to select the display format, as discussed in "Menus" later in this section.
Engineering units example: 1.23456µA
Scientific notation example: 1.23456e -6
NOTE The display may be disabled for faster operation. See
display," page

EDIT key

The SourceMeter must be in the edit mode to set source and compliance values. The edit
mode is selected by pressing the EDIT key (EDIT annunciator on). The editing cursor
(flashing digit) appears for the source or compliance reading. If a value is not edited within
six seconds, the edit mode is cancelled. While in the edit mode, the EDIT key toggles
between the source value and compliance value. See
and compliance values.
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2400 Series SourceMeter
"Main
"Overheating protection," for details.
1-25.
Section 3
®
User's Manual
menu" in this section.)
"Front
"Disabling front panel
for details on setting source