dCS 900E / 902E User Manual Manual for Software Versions 1.3x to 1.5x
dCS Ltd 12
th
June 2000
Manual part no: DOC0029021E1 Page 20 Document No: OS-MA-D0002-902.1E1
Contact dCS on + 44 1799 531 999 email to: more@dcsltd.co.uk
(inside the UK replace + 44 with 0) web site: www.dcsltd.co.uk
Menu Items
Issue -
Displays the software issue- when Set is pressed.
Filt -
Selects one of several anti-alias filter- responses. The filters should be
evaluated by ear. Filt1 gives the sharpest cut off, just below half the sampling
frequency. This is the normal setting. Filt2, Filt3, Filt4 give progressively more
relaxed responses, degrading the alias performance but sharpening the impulse
response. This affects the stereo or multi-channel image. Different filters may
be appropriate for different material.
DSD -
DSD 4 -
DSD and DSD 4 modes are only available on the dCS 904. In the dCS 900 & 902,
they are permanently set to Off.
Tone -
This accesses a sinewave test generator. On the dCS 900, the tone is fixed at
1kHz and -18dB0. Press Set to toggle it On and Off.
On the dCS 902, the tone level and frequency can be adjusted. Pressing Set
enters a submenu, which accesses the following functions:
Level The tone level, from –120dB0 to 0dB0. It can be
changed in 0.1dB steps using the Up and Down
buttons.
Freq The tone frequency, from 0.001kHz (1Hz) to just
under half the sample rate. It can be changed
using the Up and Down buttons. The step size is
1Hz for tones up to 100Hz, 10Hz up to 1kHz and
100Hz above 1kHz.
On/Off Toggles whether the generator is on or off.
Up Allows the menu to be re-entered to set other
functions. Alternatively, if left, the menu will just
time out keeping the last settings.
At power up, the tone generator is set to –18dB0, 1kHz and turned Off.
Test -
Runs a display self test routine. When successfully completed, the unit displays
Pass and returns to normal operation. Otherwise an error message Err.xy is
displayed – please refer to “Error Codes and Messages” on page 58 for more
specific information.
7-Seg -
Disables the 7 segment LED display. When set to Off, the display turns off 4
seconds after the last button press. A dot in the lower right hand corner of the
display remains lit to indicate that the display has been deliberately blanked.
The display springs back into life (temporarily) if the menu is used subsequently.
Error or warning messages are displayed regardless of this setting.