ARB
(cent)
The maximum frequency for an ARB waveform is 2.5kHz (2 vectors of O.2ms each).
As you increase the number of vectors in a waveform, the frequency of the waveform
decreases.
1
FREQ
=
t
(V LEN, +V LEN
2
+ ..
LEN
n
)
where O.2ms
t
19.99ms
In an extreme case, if you build a waveform with 150 vectors and set each vector to
the maximum vector length of 127 with
t set to 19
.99ms,
the minimum frequency
for the waveform is 2.6mHz (381 seconds).
19.99ms
(127
150)
=
381 seconds (6
.3
minutes).
Insert
The Insert Vector funct
ion
adds one vector to the current
ARB wave. When
a vector is inserted
:
- the vector is inserted immediately after the current vector (the current vector is
pointed to by the Vector Marker and intensified by the
Z
Axis output).
- the inserted vector has V HGT
=
0
t
V LEN
=
1.
- the vectors following the inserted vector are renumbered.
-
the Vector Marker is incremented by
1
and points to the inserted vector.
If the Vector Marker is pointing to the last vector,
a
new Vector 1 is inserted
.
Invert Function. Invert Function inverts the output signal with respect to the SYNC out-
put. The DC Offset is not affected.
Mode.
The only modes allowed in ARB are Free Run and Gate.
- Free Run outputs a continuous signal. All triggers are ignored.
- Gate outputs
a
continuous signal while the trigger level satisfies the slope
threshold conditions. The output gates off after the trigger level changer
waveform is completed.
47b
