TB 9-6695-293-50
CALIBRATOR
OUTPUT
SIDE VIEW
HI
L0
AC SHUNT
( 10 A)
TEST INSTRUMENT
AC MEASUREMENT STANDARD
CURRENT
SIDE VIEW
OUTPUT
SIDE VIEW
HI
INPUT
LO
1
(2) Enter the ac-to-dc difference corrections for ac shunt at each frequency in the
(3) Set TI for a 10 A dc output.
(4) Allow 30 minutes for ac shunt to stabilize.
NOTE
The 30 minute stabilization may only be required for the first
measurement. Afterwards allow at least 2 to 5 minutes after
each TI output frequency change before noting TI or ac
measurement standard indication.
NOTE
When SET REF is engaged the display shows the difference
between an applied input and the stored reference, or average
of references. The difference can be displayed in units of V (or
mV), ppm, percent, or ratio. Once a reference has been
established you can cycle through each choice by pressing any
of the three softkeys below the display. The display will cycle
through PPM (power on state), PCT, VOLTS, and RATIO,
and displays the equation used in each case.
(5) Set TI for 10.0 A, 1.0 kHz ac output. Record ac measurement standard
displayed Error indication in appropriate column of table 15.
49