Sampling Rate Select
One
of the four sampling rates may be selected. The sampling
rate selected will apply to all channels activated during the channel
select
portion
of
the test. Therefore, each channel will have the
same frequency sinewave output. The
sampling rate choices are:
5kHz, 10kHz, 15kHz and 25kHz.
The frequency of the sinewave
will vary depending upon the
sampling rate selected. Table 1 shows the
12
possible frequencies
available. The time
(T)
shown
in
Table 1 indicates the period of each
sinewave. The diagnostic
will ask:
5kHz SAMPLE RATE?
If
you
press NO switch, then it asks
10kHz SAMPLE RATE? If
you
press
NO
switch, then it asks
15kHz SAMPLE RATE?
If
you
press
NO
switch, then it asks
25kHz SAMPLE RATE?
If
you
press
NO
switch, then it asks
these questions again until the YES switch
is
pressed.
Channel Select
Any combination of the twelve channels, numbered 1 through
12, may be
selected for test. Each channel may have one of three
attenuation settings and can be assigned to mixer Group A or Group
B.
As
described
in
the Sampling Rate Select section, each channel
will
have the same frequency sinewave output. The diagnostic will
ask:
TEST CHANNEL 1?
To
test the channel, press the
YES
switch
on
the front panel.
To
disable the channel press the NO switch
on
the front panel. The
diagnostic will ask this question for each of the channels 1 through
12.
If you press the YES switch to select a channel for test, the
diagnostic
will ask the attenuation and group select questions
described next.
Kurzwell
250
Service Manual, Chapter 4
4 - 6 2
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