GENERAL INFORMATION
BASIC TEST ARRANGEMENT
The AVP-AV-1S-C should be tested with a sampling oscilloscope with a bandwidth of at
least 15 GHz to properly observe the high-speed waveform. (The cables and
attenuators must also have a bandwidth of at least 15 GHz.) A typical test arrangement
is shown below:
The attenuators are required to prevent damage to the sampling oscilloscope. A 40 dB
attenuator with sufficient voltage rating should be used on the main output. Factory
tests are conducted using Mini-Circuits model BW-S20W2+ attenuators.
BASIC PULSE CONTROL
This instrument can be triggered by its own internal clock or by an external TTL trigger
signal. When triggered internally, two mainframe output channels respond to the
trigger: OUT and SYNC.
OUT. This is the main output. The maximum output voltage is 5V.
TRIG. The TRIG pulse is a fixed-width TTL-level reference pulse used to trigger
oscilloscopes or other measurement systems.
The TRIG output precedes the main output. These pulses are illustrated below:
19
AVTECH
PULSER
MAIN OUTPUT
CONNECTOR
TRIG
CONNECTOR
AC
POWER
ALL CABLES: 50 OHM COAXIAL
SAMPLING
OSCILLOSCOPE
BW > 15 GHz
50 OHM INPUT
TRIG
CONNECTOR
40 dB
ATTENUATOR
Summary of Contents for AVP-AV-1S-C
Page 24: ...WIRING DIAGRAMS WIRING OF AC POWER...
Page 25: ...PCB 158R5 LOW VOLTAGE POWER SUPPLY...
Page 26: ...PCB 235C HIGH VOLTAGE DC POWER SUPPLY...
Page 27: ...PCB 126D OSCILLATOR AND TRIGGER CIRCUIT...
Page 28: ...PCB 231A INTERNAL OFFSET GENERATOR...
Page 29: ...MAIN WIRING...
Page 30: ...PERFORMANCE CHECK SHEET 30...