Fluke 5502A, Operator'S Manual

Page: 124 / 378

5502A
Operators Manual
4-50
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7. Push

. The Calibrator clears your entry from the “New pf
=
” line and copies it
to the “Power Factor
=
” line of the Control Display.
8. Push

one or more times to return to previous menus.
Record a DC Offset
When the Calibrator single output is an ac voltage of sine waves, triangle waves, square
waves, or truncated sine waves, you can apply a
+
dc offset. When you apply an offset to
square wave outputs, the duty cycle must be 50.00 % (default). The offset selection is
recorded with the softkey OFFSET, which shows when the ac voltage output is less than
33 V (sine waves), 66 V p-p (square waves) or 93 V p-p (triangle waves and truncated
sine waves). The softkey OFFSET will not show and offsets cannot be recorded when the
output is a voltage sine wave measured in dBm.
The maximum offset value permitted is in relation to the maximum offset and maximum
peak signal for each range. For example, a square wave output of 10 V p-p is in the range
6.6 V p-p to 65.9999 V p-p, a range with a maximum peak signal of 55 V. For this
example, the square wave peak value is 5 V, this lets a maximum
±
offset of 50 V for a
maximum peak signal of 55 V.
Read the specifications in Chapter 1 for offset limits. If you use an offset voltage and you
make the output move into a range where offset is not permitted (for example, above
33 V for a sine wave output), the Calibrator goes into the standby mode and the offset
function will be disabled.
Complete the subsequent procedure to record a dc voltage offset. If you make an entry
error, push

to clear the display, then reenter the value. This procedure works if you
have already sourced a single ac voltage output of a maximum of 33 V (sine waves),
65 V p-p (square waves) or 93 V p-p (triangle waves and truncated sine waves), this will
show the softkey OFFSET (see below).
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