Model 2700 Multimeter/Switch System User’s Manual Getting Started 1-17
4. Install the fuse holder assembly into the power module by pushing it in until it
locks in place.
Power-up sequence
On power-up, the Model 2700 performs self-tests on its EPROM and RAM and
momentarily lights all segments and annunciators. If a failure is detected, the instrument
momentarily displays an error message and the ERR annunciator turns on. (Error
messages are listed in
Appendix C).
NOTE If a problem develops while the instrument is under warranty, return it to
Keithley Instruments, Inc., for repair.
If the instrument passes the self-tests, the firmware revision levels are displayed. An
example of this display is:
REV: A01 A01
where: First A01 is the main board ROM revision.
Second A01 is the display board ROM revision.
Installed switching modules are then displayed. For example, if there is a Model 7700
switching module installed in both slots, the following messages will be displayed:
1: 7700 2: 7700
If a slot is empty, the message “NONE” will be displayed instead.
If the saved power-on setup is not the factory defaults setup (SYSTem:POSetup PRESet),
a message to identify the setup will be briefly displayed (
“Defaults and user setups,”
page 1-20).
After the power-up sequence, the instrument begins its normal display of readings.
NOTE The serial number of the Model 2700 can be displayed by selecting the SNUM
item of the SETUP menu. Press SHIFT and then SETUP to access the menu. For
remote operation, the serial number can be read using the *IDN? command (see
Section 12 for details).
Table 1-2
Fuse ratings
Line voltage Fuse rating Keithley P/N
100/120V
220/240V
0.25A, slow-blow 5× 20mm
0.125A, slow-blow 5× 20mm
FU-96-4
FU-91
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