Chapter 2 - Installation
Insert Phone Outputs Monaural phone jacks for left and right insert phones or patch cords.
Voltage: 1µV to 4.0 V
Output impedance: 5 ohms or less
Note: When the Single Insert Phone option is used, it must be plugged into the left
insert phone output.
R6 - Bone Vibrator (1/4 inch phone jack)
Jack for bone vibrator or gray patch cord.
Voltage: 200 µV to 5.00 V RMS
Output impedance: 5 ohms or less
R7 - Subject (1/4 inch phone jack)
Response
Handswitch Accepts plug from the cable attached to the patient’s response handswitch or
handswitch patch cord.
Pin Function Voltage Impedance
1 Shield GND 0 ohm
2 Digital GND GND 0 ohm
3
Response input +5V/GND 1K ohm/0 ohm
R8 - CD Player Power (2 pin power jack)
Jack
Provides 5 V DC for CD Player.
R9 - Dip Switch/Cal An eighth position bank of switches accessible by an authorized service representative.
Switch
R10 – Speakers (5 pin Din connector) Located on rear of instrument.
Connects to left and right loudspeakers.
Pin Function Impedance
1
Left speaker (high) 1.0 ohm
2
Left GND 0 ohm
3
Right speaker (high) 1.0 ohm
4
Left speaker (low) 1.0 ohm
5
Right speaker (low) 1.0 ohm
SHLD Right GND 0 ohm
2-3
1761-0100 Rev. B