GENERAL INFORMATION
BASIC TEST ARRANGEMENT, WITHOUT OUTPUT MODULES
For initial testing of the AVR-3-PW-TEK3-B, the instrument can be operated without the
output modules. Both outputs require a 50 Ohm load. OUT1 can be observed on a
common "real-time" oscilloscope with a bandwidth of 200 MHz or higher, since the rise
time is approximately 10 ns. However, OUT2 should be observed with a high-bandwidth
(> 2 GHz) sampling oscilloscope in order to accurately reproduce the very fast (< 500
ps) rise time.
For testing OUT1 with a real-time oscilloscope, the instrument should be connected as
shown below:
A high-quality low-inductance 50 Ohm load is required for the above test arrangement.
The worst case power dissipation in the load resistor is 3.1 Watts.
For testing OUT2 with a high-bandwidth sampling oscilloscope, the instrument should
be connected as shown below:
20
AVTECH
AVR-3-PW-TEK3-B
OUT1
SYNC
OUTPUT
AC
POWER
ALL CABLES: 50 OHM COAXIAL
REAL-TIME
OSCILLOSCOPE
CHANNEL A
TRIG
INPUT
SCOPE
PROBE
50Ω
TEST
LOAD
OUT2
Содержание AVR-3-PW-TEK3-B
Страница 31: ...Larger values of attenuation 6 dB will reduce the reflections and the pulse amplitude further 31 ...
Страница 42: ...PCB 158R4 LOW VOLTAGE POWER SUPPLY ...
Страница 43: ...PCB 235B HIGH VOLTAGE DC POWER SUPPLY ...
Страница 44: ...PCB 284B HIGH VOLTAGE DC POWER SUPPLY WITH DISCHARGE ...
Страница 46: ...PCB 241B DUAL CHANNEL PULSE WIDTH BOARD ...
Страница 51: ...PERFORMANCE CHECK SHEET 51 ...