1.7 STIMULUS TYPES
Continuous Tone
Continuous FM Tone
Pulsed Tone
SIGNAL FORMAT
Continuous
-
Signal steady as long as Present Bar is depressed.
Pulsed
-
Pulsed Rate:
2.5
Pulses/sec
Pulse rate is synchronized to the "Present
Bar"
so that
the
first and last pulse will have 200 ms on time.
DUTY CYCLE
50%
RISE/FALLTIME
20-50 ms
ON/OFF RATIO (BETWEEN PULSES)
>20
dB
FREQUENCY MODULATION
FM Rate:
5 Hz
FM Deviation:
25%
1.8 TRANSDUCERS
HEADSET
TDH39 Earphones with 60 ohm impedance
1.9 FRONT PANEL CONTROLS AND REAR PANEL CONNECTORS
FRONT PANEL
CONTROLS
Frequency Selection
HL Select
Mode Selector (Pulsed/Steady/FM)
Routing (Left/Right)
Present Bar
Power Switch
"+10
dB"
Push-Button
3
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