E
vo
C
LOCK
HIGH PERFORMANCE CLOCK GENERATOR
REVISION P
r
B – DECEMBER 2011
Copyright © 2011, M2Tech Srl
7
M2Tech
www.m2tech.biz
3. Back Panel
5
6
7
Figure 2
5) WCLK output impedance selector.
Allows to choose the matching mode for the
WCLK output. The upper position is for 75 Ohms matched lines, the lower position is for
high impedance WCLK inputs. When in doubt, try first the latter setting to avoid damages
to high impedance inputs driver by a 75 Ohms generator (in fact, when a 75 Ohms
generator is connected to a high impedance load, the actual output level is double as the
voltage obtained when the load is 75 Ohms).
6) WCLK selector.
This rotary switch allow for selecting between the various WCLK and
“super clock” frequencies that can be obtained at the WCLK output. Each position selects
a pair of values, the effective selected value depending on the setting of the MCLK
selector (n°7, please read below). As an example, to obtain 192kHz, select position
“176.4K/192K” and set the MCLK switch to the lower position, as in Figure 2.
7) MCLK selector.
Allows to choose between 24.576MHz and 22.5792MHz as base
frequency to produce the output clocks. The setting of this selector affects both outputs.
When using the
E
vo
C
LOCK
together with an
HI
F
ACE
E
vo
, use the upper position
(22.5792MHz) for files with 44.1, 88.2 and 176.4 sampling frequency; use the lower
position (24.576MHz) for files with 48, 96 and 192 sampling frequency.
