Avtech AVO-6-B, Инструкция по эксплуатации

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GENERAL INFORMATION
AMPLITUDE CONTROL
The AVO-6HZ-B consists of two parts, the mainframe and the output module. The
mainframe is a voltage pulser, which generates up to 110V (V
OUT
).
The fan-cooled output module contains a 11Ω (±10%) series resistance (capable of
dissipating up to 50 Watts of average power), and packaged diodes may be soldered to
the output terminals of this module. The diode load is connected in series with the
internal resistance, so that the current through the diode is normally given by:
I
DIODE
= (V
OUT
– V
DIODE
) / 11Ω
where V
DIODE
is the voltage drop across the diode. These values must be selected such
that I
DIODE
never exceeds 10A.
The actual measured value of the 11Ω series resistance is recorded in the calibration
checksheet at the end of this manual. When measuring this resistance, four-wire
measurements should be used. (Two of the five input connectors may be used to
connect to one side of the resistor. The other two wires should be connected to the
output terminal.)
The functional equivalent circuit of the output module is shown below:
Output Module Functional Equivalent Circuit
An additional resistance (R
SENSE
) can be placed in series with the diode load, for current
monitoring purposes. In this case, the diode current is given by:
I
DIODE
= (V
OUT
– V
DIODE
) / (11Ω + R
SENSE
)
20
11 Ω
I
OUT
,
10A MAX.
OUTPUT MODULE
INPUTS FROM
MAINFRAME
(0 TO 110V)
CONTROL
CABLE FROM
MAINFRAME
FAN &
THERMISTOR
Diode (device under test),
oriented for positive operation.
Reverse for negative operation.
450 Ω
MON OUTPUT
(-M OPTION)