meter (3 feet) are used on the output, due to the cable capacitance. The maximum
usable cable length is 2 meters (6 feet).
LOAD IMPEDANCE
The AVR-G1-B can drive load impedances of 10 kΩ or higher. It is NOT designed to
drive 50 Ω loads or highly capacitive loads. (The AVR-G1-B is tested with capacitive
loads of 330 pF. Load capacitance should not exceed 330 pF.)
BURST GENERATION (-BR OPTION)
The waveforms given above assume that a single output pulse is generated for each
trigger event (regardless of the source). However, when the burst mode feature is used
on units with the -BR option, the instrument can generate 1-500 pulses for each
individual trigger event. The number of output pulses in each burst can be adjusted
from 1 to 500 using the front-panel controls (using the “N” menu), or by a computer
command. The time between pulses (i.e., from the falling edge of one pulse to the rising
edge of the next pulse) can also varied from 99.9 us to 1.0 seconds from the front panel
(using the “BUR” menu), or by computer command.
The figure below shows burst mode operation (i.e., N > 1) used with internal triggering:
The figure below shows burst mode operation used with external triggering:
DELAY
(VARIABLE)
PULSE WIDTH
(VARIABLE)
SYNC OUT
(generated by the
internal oscillator)
MAIN OUTPUT
BURST PULSE
SEPARATION
BURST COUNT (N),
VARIABLE FROM 1 TO 500.
(N = 3, IN THIS EXAMPLE)
PERIOD = 1 / FREQUENCY
25
Summary of Contents for AVR-G1-B
Page 37: ...PCB 158R5 LOW VOLTAGE POWER SUPPLY...
Page 38: ...PCB 284C HIGH VOLTAGE DC POWER SUPPLY...
Page 40: ...PCB 104G KEYPAD DISPLAY BOARD...
Page 42: ...PERFORMANCE CHECK SHEET 42...
