High Voltage Amplifier
18014-D02 Rev E, Sept. 3, 2019
Page 5
www.thorlabs.com
Part 3. Setup and Operation
Warning
Before plugging the amplifier into an AC outlet, check that the line
switch voltage matches your AC outlet. The amplifier is configured
from the factory to operate on 115 V by default. The fuse and line
switch will need to be changed for 230 V operation.
See section 5.1 on page 12 for more information.
To setup the unit, refer to Figures 1 and 2, and the legend table on the preceding page and
perform the following steps:
1.
See the warning above. Attach the supplied AC power cord to the AC connector
on the rear panel and plug into a suitable AC outlet.
2.
Connect an EO-modulator to the HV Output connector (6) on the front panel.
HV Output Warning
The HV output is capable of producing hazardous voltages and
currents. The HV output will handle an accidental short circuit
without damage, but the output should not be shorted
continuously. The current is internally limited to 100 mA.
3.
(Optional) Connect the HV monitor (4) to an oscilloscope or volt meter. The
input impedance must be at least 50Ω; however, at this value the ratio will be
40:1. The true HV Output to monitor ratio can be calculated with the following
equation:
input
input
monitor
out
R
R
V
V
50
20
Where:
V
out
is the HV output
V
monitor
is the HV Monitor output
R
input
is the input impedance of the measurement device
For impedance values of 50Ω, the equation becomes:
monitor
out
V
V
40
For impedance values of greater than 10 kΩ, the internal impedance is
insignificant and the equation becomes:
monitor
out
V
V
20
