Programming instructions

12
Telephone Ring Generator
CAUTION: This test is only designed to test telephone ringer circuits. Do not
use this test to power any device that requires ac input power.
To produce an output signal to test telephone ringers, select Ring Generator in
the Tests menu. The test uses the parameters that appear in the dialog box that is
displayed on the screen when the test is first selected.
You can use the transient editor to make any final adjustments to the telephone
ringer waveform such as fine tuning the dc level of the waveform. Note that the
transient editor only displays the rms-portion of the telephone ringer; it does not
display the actual waveform.
When measurements are enabled, you can view the ringer waveform in the Main
window. If necessary, move the Transient editor out of the way to see the Main
window.
Start of step #2.
(Drag pointer to
adjust width of
ste
p
.
)
Enter the dc level
of the waveform
Enter a ringer on-
time value.
Enter a ringer off-
time value.
Ringer off-
time level.
Click here to continue.
This displays the
Output Transient
Editor. (see below)
Enter a ringer
frequency.
DC offset set to
80 V (Drag
point to adjust
amplitude.)
Enter the ring
amplitude in rms
volts
Repeat the
number o
f
rings.
Click to start
sample test.