Avtech AVD series, Instructions Manual

Page: 8 / 10

BASIC TEST ARRANGEMENT
DC POWER SUPPLY
The AVD must be connected to a 15V DC power supply (as well as a ground
connection).
The power supply input is protected from excessive voltages and incorrect polarities by
an externally-mounted (and replaceable) 1N4746A Zener diode. This diode may be
damaged by reversed polarities, or voltages exceeding 18V.
GENERAL OPERATING NOTES
1) The bandwidth capability of components and instruments used to display the pulse
generator output signal (attenuators, cables, connectors, etc.) should exceed 10
GHz.
2) The use of 40 dB attenuator on the output will ensure a peak input signal to the
sampling scope of much less than 1V.
3) To DC offset the output pulse connect a DC power supply set to required DC offset
value to the terminals marked “OS”. The maximum attainable DC offset voltage is
8
AVTECH
PULSER
OUT
CONNECTOR
SAMPLING
OSCILLOSCOPE
BW > 10 GHz
50 OHM INPUT
IN
CONNECTOR
TTL-LEVEL
LOGIC
PULSER
TRIG
MAIN OUTPUT
SYNC OUTPUT
40 dB
ATTENUATOR
ALL CABLES: 50 OHM COAXIAL
+3V to +5V (TTL)
0V
PW > 50 ns
PRF ≤ 1 MHz
+15V DC
POWER
SUPPLY
50Ω FEED-THROUGH
TERMINATOR
(OPTIONAL, BUT
RECOMMENDED)