Table 7-3. Recommended Calibration Equipment
Description
DC Voltage Calibrator
5% digit DMM
Terohmmeter
I----
Resistor
Resistor
Resistor
Decade Resistor
1 Specifications
Manufacturer / Model
/.19v, 1.9v. 19v, 19ov. f0.002%
,I Fluke (343A
0.015% DC accuracy
lOOMR, + 0.035%
1GQ *0.07%
100G~. kO.O8%
lOOMR, i 1%
1GQ. +2%
lOOGQ, +2%
lOQ-lOM0, +0.03%
Standard Capacitor
lOOOpF, + 0.1%
Shielded Test Fixture
(Figure 7-l I
BNC Female-Female Adapter
BNC Cable
BNC Cable
Triax-BNC Adapter
7.4.3 Warm-Up Period
Turn on the instrument power and allow it to warm up for at
least two hours before beginning the calibration procedure. If
the instrument has been subjected to extremes of temperature
or humidity, allow at least one additional hour for the instru-
ment to stabilize before beginning the calibration procedure.
NOTE
While rated accuracy is achieved after the two hour
warm up period, input bias current may require ad-
ditional time to come to its optimum level. Allow
two hours for input bias current to settle to less
than 1OfA and eigl%hours to less than 5fA. It is
preferable in sensitive applications to leave the unit
on continuously.
7.4.4 Calibration Jumper
A jumper, located on the mother board, allows the disabling
or enabling of front panel and IEEE-488 bus calibration.
When the jumper is in the disabling position, permanent
(NVRAM) storage of calibration constants will not take
place. However, temporary calibration values may be
entered and used even if NVRAM calibration storage is
disabled. Note, however, that any calibration parameters will
be lost once the power is turned off unless they are stored in
NVRAM.
The calibration jumper location and the disabled/enabled
positions are indicated in Figure 7-2. Note that the jumper is
in the disabled position as shipped from the factory.
Keithley
Guildline
197
9520
Keithley
Keithley
R289-100M j
R289-1G
Keithley R319-100G
ESI
DE-62
Hewlett-Packard 16384A
Pomona
3823
Pomona 4530-c
Keithley 4801
Keithley / 6147
I
MOTHER BOARD
FRONT OF INSTRUMENT
Figure 7-2. Calibration Jumper Location
7-3
To Next Page
Loading...
Need help?
General
