Prism
Operation Manual Issue 2.00
Page 2.4
2.4. Some basic tests
This section assumes that the settings of the DSA-1 are the factory defaults. If you
have difficulty in reproducing the results below, please try again after instating the
default settings via menu 9.3.
Press the [LS] key so that its 'ON' indicator is lit, and set the [L.S. MODE] to 'BOTH'.
A mono mix of the two audio channels should now be audible from the DSA-1's
loudspeaker. It may be necessary to operate the [
YY
] and [
ZZ
] keys to obtain the correct
volume level.
Press the [EXIT] key a few times to ensure that you are at the top level of the menu
system, and then use the [<] and [>] keys until the display shows:
Select Mode:
1. Carrier Tests
Now press the [ENTER/NEXT] key, and the display will show:
1. Carrier Tests
1.1. fs Freq
On pressing the [ENTER/NEXT] key again, the measured sampling rate of the test
signal is displayed, along with its accuracy in ppm (parts per million), for example:
fs = 44100.44 Hz
Acc = +10 ppm
Now press the [EXIT] key followed by the [>] key. The display shows:
1. Carrier Tests
1.2. fs Jitter
Enter the sampling-rate jitter test mode by pressing [ENTER/NEXT], and the result is
displayed, for example:
fs Jitter [P-P]
= 4.3ns fc=1k5
These few basic steps are intended to give an introduction to the workings of the DSA-
1. Later sections of this manual cover all DSA-1 operations in detail.
