Resetting The Calibrator; Zeroing The Calibrator; Factory Defaults For Setup - Fluke 5500A Operator's Manual

Temperature Standard
Host Connection
GPIB Port Address
Serial Ports
EOL (end of line)
EOF (end of file)
Remote I/F
SRQSTR
* Output Display and Control Display, respectively. There are 8 levels: 0,1,2,3,4,5,6,7.

4-10. Resetting the Calibrator

At any time during front panel operation (not remote operation), you can return the
5500A Calibrator to the power-up state by pressing
which is cleared by pressing a blue softkey. Pressing the
Returns the calibrator to the power-up state: 0 V dc, standby, 330 mV range and all
OUTPUT SETUP menus set to their most recent default values.
Clears the stored values for limits and error mode reference.

4-11. Zeroing the Calibrator

Zeroing recalibrates internal circuitry, most notably dc offsets in all ranges of operation.
To meet the specifications in Chapter 1, zeroing is required every seven days, or when
the 5500A Calibrator ambient temperature changes by more than 5ºC. Zeroing is
particularly important when your calibration workload has 1 m and 1 mV resolution,
and when there are significant temperature changes in the 5500A Calibrator work
environment. There are two zeroing functions: total instrument zero (ZERO) and ohms-
only zero (OHMS ZERO).
Complete the following procedure to zero the calibrator. (Note: The 5500A Calibrator
rear-panel CALIBRATION switch does not have to be enabled for this procedure.)
1. Turn on the Calibrator and allow a warm-up period of at least 30 minutes.
2. Press the
3. Install a copper short circuit in the front panel TC connector (total instrument zero
only).
Table 4-1. Factory Defaults for SETUP
Features
its-90
gpib (IEEE-488)
4
8 bits, 1 stop bit, xon/xoff, parity
none, 9600 baud, wait 30 sec.
CRLF
012,000
term
Remote commands (see Chapter 6)
SRQ: %02x %02x %04x %04x
key.
Front Panel Operation
Resetting the Calibrator
Display Contrast* level 7,7
Display Brightness* level 1,0
RTD Power Up pt385
Default Type
Thermocouple Power K
Up Default Type
Source Preference 5500
Current Limits
Voltage Limits
*PUD
string cleared
, except after an error message,
key does the following:
4
11 A
1020 V
4-7