5
waveform
processing
chop them into pieces) to the output buffers.
There are five modes selectable by the small
pushbutton
12
. Pressing it selects the desired
mode in a cycle, indicated by a corresponding
LED
13
.
MIN/MAX OF FOUR
None of the LEDs are lit. This is the default
mode and is the same as the original Samara.
In this mode, the minimum voltage of all four
inputs is determined and delivered to the
min
jack
10
, and the maximum of all four inputs is
delivered to the
max
output
11
. Note that all
inputs always take part in the equation (fig. 2).
If there is nothing plugged in, the correspond-
ing value is zero, which in certain situations
may be selected as the minimum or the max-
imum value.
MIN/MAX OF TWO
Indicated by the LED labeled
mm2
. In this
mode, only channels
1
and
2
take part in the
calculation of minimum and maximum. This
mode is more useful if you only need to oper-
ate on two signals. Also, it spares half of your
Samara for other uses.
CLAMP
Indicated by the LED labeled
clp
. This mode
limits the range of two independent signals
or voltages by two voltage controlled clamps
(fig. 3).
Channels
1
and
3
define interchangeably the
minimum and maximum voltage the signals
are clamped within. These two limits can be
set manually (by engaging positive or neg-
ative offsets and adjusting attenuators) or
dynamically, by applying control voltages to
the inputs of channel
1
and
3
. Signal fed to
input
2
is then clamped by these two limits
and the resulting signal is available at the
func
a
10
output. Similarly, signal from
channel
4
is clamped by the same two limits
and appears at
func
b
output
11
.
fig. 2:
min/max of four
mode
0
0.2
0.4
0.6
0.8
1.0
0
0
max
out
min
out
inputs
1
,
2
,
3
,
4
fig. 3:
clamp
mode
0
0
0
0.2
0.4
0.6
0.8
1.0
func a
out
input
1
input
3
input
2
