Defaults; Ram And Rom Test Messages; General Display Messages; Instrument Familiarization - Keithley 595 Instruction Manual

2.3.2 Defaults
Set POWER switch to its ON position. After briefly display-
ing "IX: and 'to.", the instrument will power up in the
following configuration:
l
2OnE CAPACITANCE range
NOTE
If the instrument is still under warranty (less than
one year from the date of shipment), and problems
develop, it should be retmned to Keithky In-
struments for repair. See paragraph 1.6 for details
on returning the instrument.
l Z?ZROCHECKon
l
VOLTAGE SOURCE = O.OOV
. WAVEFORM = 0.05V square wave
l
DELAY TIME = O.Ct7sec
. VOIZCAGE SOURCE LIMITS = &?O.OOV
2.3.3 RAM and ROM Test Messages
Both RAM and ROM are automatically tested as part of the
power up procedure. During normal power-up, "r.r." and
"1.0." will briefly appear while memory is being tested. Jf
a memory error occurs, the '%I." or "1.0." message will re-
main on the display.
If the instrument was not able to read the stored calibra-
tion constants and configuration, the decimal points in the
two exponent digits will flash.
If such errors occur, the instrument may be partially or com-
pleteIy inoperative. Refer to Section 8 for more complete
details.
2.4 GENERAL DISPLAY MESSAGES
The Model 595 has a display made up of a 4% digit signed
mantissa as well as a two digit alphanumeric exponent.
Messages are occasionally seen on the display to indicate
instrument status or errors in operation. These display
messages are listed in Table 2-1.
2.5 INSTRUMENT FAMILIARIZATION
The following figures, brief feature descriptions, and
measurement examples will acquaint the Model 595 user
with basic front and rear panel operation. For more in-
depth information, see Section 3.
WARNING
The maximum commor+mode input voltage (the
voltage between input low and chassis ground)
is 30V peak. Exceeding this value may create a
stiock hazard.
CAUTION
The maximum voltage between input high and
input low is 30V peak. Exceeding this value may
cause damage to the instrument. Current inputs
that exceed 3mA may be erroneously displayed
as an on-scale reading.
2-2