ALL CHANNELS TEST
To
select the ALL CHANNELS test, answer:
TEST CHANNELS? Press VESf
MUTE AUDIO OUTPUT? Press YES
or
NO
If you press the YES switch, the relay will be closed disabling
the audio output.
If you press the NO switch, the relay will be open,
enabling the audio output.
All 12 channels will be enabled, with a
different
frequency
sinewave
on
each channel. Channel 1 will have the lowest frequency
sinewave, and channel 12 will have the highest frequency sinewave.
The signals can be checked on pin 2
of
each
of
the alias filter
outputs shown in table
2.
The following table shows the frequencies
expected for each channel:
CHANNEL
1
2
3
4
5
6
7
8
9
10
11
12
SIGNAL SAMPLE RATE FREQ.
C2
SINEWAVE
5KHZ
65HZ
C2
SINEWAVE 10KHZ
130HZ
C2SINEWAVE 15KHZ
195HZ
C2
SINEWAVE
25KHZ 325HZ
C5
SINEWAVE
5KHZ
261HZ
C5SINEWAVE 10KHZ
523HZ
C5SINEWAVE 15KHZ
783HZ
C5
SINEWAVE 25KHZ
1305HZ
C8
SINEWAVE
5KHZ
1395HZ
C8
SINEWAVE
10KHZ
2790HZ
C8
SINEWAVE 15KHZ
4186HZ
C8
SINEWAVE
25KHZ
6976HZ
Kurzwell 250 Service Manual, Chapter 4
4-64
PERIOD
15.3 msec.
7.6 msec.
5.1
msec.
3.1
msec.
3.8 msec.
1.9 msec.
1.3 msec.
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