Avtech AV-1023-C, Instructions Manual

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15.AMPLITUDE A inner knob . This varies the output amplitude of channel "A" between
0 and 10 Volts.
16.AMPLITUDE B outer knob . This switch selects the output polarity (positive or
negative) of channel "B".
17.AMPLITUDE B inner knob . This varies the output amplitude of channel "B" between
0 and 10 Volts.
18.NORM/COMP A switch . In the "NORM" position, channel "A" is logically non-
inverted. In the "COMP" position, channel "A" is logically complemented (i.e.
inverted). In the complemented state, the high and low voltage levels are reversed
relative to the "NORM" state. The polarities do not change.
19.NORM/COMP B switch . In the "NORM" position, channel "B" is logically non-
inverted. In the "COMP" position, channel "B" is logically complemented (i.e.
inverted). In the complemented state, the high and low voltage levels are reversed
relative to the "NORM" state. The polarities do not change.
20.A/A+B switch . In the "A" position, the leftmost OUT connector (item 23) outputs
channel "A". In the "A+B" position, this connector provides the sum of channels "A"
and "B" instead.
21.B/B+A switch . In the "B" position, the rightmost OUT connector (item 24) outputs
channel "B". In the "B+A" position, this connector provides the sum of channels "B"
and "A" instead.
22.ZOUT switch . This switch sets the output impedance of the two main outputs (items
23 and 24). The output impedance can be 1W or 50W.
23.OUT, left connector . This connector provides either "A" or "A+B" outputs, depending
on this position of the A/A+B switch. The output impedance is set by the ZOUT
switch.
24.OUT, right connector . This connector provides either "B" or "B+A" outputs,
depending on this position of the B/B+A switch. The output impedance is set by the
ZOUT switch.
25.SYNC connector . This output supplies a TTL-level pulse to trigger oscilloscopes or
other measurement equipment. The output pulse width is nominally fixed at 50ns.
26.TRIG connector . If the INT/EXT switch (item 3) is in the "EXT" position, the external
TTL-level trigger should be applied to this input. When the INT/EXT switch is in the
"INT" position, this input has no effect. However, it should be left unconnected to
avoid electromagnetic interference with the internal clock.
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