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OPERATIONAL CHECK
This section describes a sequence to confirm the basic operation of the instrument. It
should be performed after receiving the instrument. It is a useful learning exercise as
well.
Before proceeding with this procedure, finish read this instruction manual thoroughly.
Then read the “Local Control” section of the “Programming Manual for -B Instruments”
thoroughly. The “Local Control” section describes the front panel controls used in this
operational check - in particular, the MOVE, CHANGE, and ADJUST controls.
1. Connect a cable from the SYNC OUT connector to the TRIG input of an
oscilloscope. Connect a 50W (or higher) 50Ω load to the OUT connector and place
the scope probe across this load. The load resistor must have a voltage rating of at
least 250V. The power dissipated in the resistor is given by
P = (V
2
/ R) × (PW / T) = (V
2
/ R) × PW × f
where “V” is the output voltage, “R” is the load resistance, “PW” is the pulse width,
and “T” is the pulse period (1/frequency), and “f” is the frequency.
2. Set the oscilloscope to trigger externally with the vertical setting at 50 Volts/div and
the horizontal setting at 1 us/div. Be sure that your oscilloscope and probe setup
can handle the maximum amplitude of 200V. The 50Ω load resistor should be rated
for at least 200V of voltage and 80W of power. Factory tests are conducted using
and Ohmite TAP800K50RE mounted on a water-cooled base.
3. Turn on the AVR-3HE-B. The main menu will appear on the LCD.
23
AVTECH
PULSER
MAIN OUTPUT
CONNECTOR
SYNC
OUTPUT
AC
POWER
ALL CABLES: 50 OHM COAXIAL
REAL-TIME
OSCILLOSCOPE
CHANNEL A
TRIG
INPUT
SCOPE
PROBE
TEST
LOAD
Содержание AVR-3HE-B
Страница 34: ...PCB 158R4 LOW VOLTAGE POWER SUPPLY ...
Страница 35: ...PCB 197H HIGH VOLTAGE DC POWER SUPPLY DISCHARGE ...
Страница 44: ...PERFORMANCE CHECK SHEET 44 ...