Options
Rising time:
…Power Failure Protection is not equipped
…The output range is shifted.
●
Shifting following 3 ranges is possible for ±75V output models.
L -125 V to +25 V M -75 V to +75 V H -25 V to +125 V
●
Shifting following 3 ranges is possible for ±150V output models.
L -250 V to +50 V M -150 V to +150 V H -50 V to +250 V
-LN
-LVs
At ordering, please suffix option codes to the tail of the model number.
<Example> DOA150-2-LNVs (alphabetical order)
As for characteristics of amplifiers
For Capacitive Loads:
For Induced Loads:
Response speed:
0.1fc
0.01fc
0 dB
3 dB
f (Hz)
0.5fc fc
DC
0
70%
92%
100%
Vcon-in
OUTPUT
0%
10%
0%
100%
90%
tr
tf
(step time): responsiveness may be expressed with rise time.
(see right figure)
Rise time for amplifiers in fc (Hz) of response time (-frequency band) is
calculated with following equation generally.
tr
≒
0.35/fc
Decay time tf is equal to tr.
Frequency band: to 1 MHz, tr = tf
≒
0.35 µs
: to 500 kHz, tr = tf
≒
0.7 µs
When accurate output wave is required, please select an amplifier in
sufficiently higher frequency band than applied one.
Generally, speedy frequency band as 3 to 5 times of applied frequency
for sine wave and 10 times for rectangular wave are required.
If frequency band is in lacking, as not only output amplitude is reduced
but also phase difference between input and output become larger,
consideration to utilize it monitoring output wave is required.
In case of capacitive load, oscillation may be caused.
If so, please insert a power resistance to the output in series.
And, in capacitive load, please attend to that frequency band is
limited by the resistance and capacity inserted in series
At CC mode, oscillation may be caused by inductance of induced loads.
If so, please connect C-R straight circuit between output terminals so as not to cause oscillation.
This knob is attached on the
front panel.
06
