TB 9-6695-293-50
(2) Set TI for a 3.0 V, 1 kHz wideband output. When the ac measurement standard
indication has settled, press the SET REF soft key and set display to indicate PCT units.
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.
(3) Set TI to frequencies listed in table 11 for 3.0 V output level. At each frequency,
record ac measurement standard error indication [(Vin - Ref)/Ref indication] in flatness
error column of table 11 (include polarity). Flatness error will be within the limits
specified; if not, perform e below.
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