US/50 User's Guide 19
Ultrasound Modality
18. ULTRASOUND INTENSITY CONTROL: Regulates output from 0 to Max
as displayed on the Ultrasound Meter dial.
19. ULTRASOUND INTERRUPTED OUTPUT SLIDE CONTROL: Provides a
variable selection of interrupted output. When the slide switch is in the Off
position, the output will be non-interrupted. As the control is moved to the
right, the Interrupt On indicator light (located above the upper right corner
of the ultrasound meter) will illuminate and the interrupted rate will increase.
The approximate duration is 3½ to 1½ second intervals, 50% duty cycle. When
the control is returned to the Off position, the Interrupt On indicator light will
turn off and the interrupted rate will stop.
20. ULTRASOUND OUTPUT TRANSDUCER CONNECTOR: Provides for
connection to an Amrex Ultrasound Transducer. The Transducer Cable Fault
Alarm System detects improper transducer cable connection and/or
transducer cable damage. If a transducer cable is improperly connected or
damaged, an audible signal will be emitted from the generator, the "Interrupt
On" light will illuminate and the ultrasound meter will display "0" output.
Ultrasound output will cease until the transducer cable is properly connected
to the generator or, if damaged, replaced.
AMPLITUDE MODULATED AT 120 Hz.
ULTRASOUND WAVEFORM
NON-INTERRUPTED ULTRASOUND OUTPUT
0 T
TIME
ON
INTERRUPTED ULTRASOUND OUTPUT
( 50 PERCENT DUTY CYCLE )
0 T
TIME
OFFON
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