Welch Allyn Grason-Stadler GSI 17 Series - Indicators; Rear Panel Connectors; Left and Right Earphone Jacks

INDICATORS:
Power ON/OFF
Frequency Selector
dB HL - LCD
Left/Right Earphone
Pulsed/Steady/FM
Subject Response - LED
"Battery Low"
(when applicable, i.e. Battery Option
purchased) - LCD
Tone ON - LED
Extended Range - LCD
REAR PANEL CONNECTORS
Left and Right Earphone - 1/4" Phone Jack
Subject Response Switch
- 1/4" Phone Jack
Power Cord - 5 Pin DIN
LEFT AND RIGHT EARPHONE JACKS (J4 & J5)
Pin#
Function
Output Voltaqe
Tip Phone High
25 u VRMS to 2.5 VRMS
Sleeve
Phone Low
0 Volts
SUBJECT SWITCH (J7)
---
Pin&
Function
Output Voltaqe
Tip
Switch High
+5 Vdc
Sleeve Switch Low
0 Volts
POWER INPUT (J1)
Power Module
Battery Power
Connected
No Power w/NiCad
Module
Battery
Pin #
Name
Attached
Installed
--
J1-1 VSUP
NC
NC
J1-2
CHASGND PROTECTIVE
PROTECTIVE
GND
GND
Jl-3
CGND 0 (REF)
0 (REF)
Jl-4
BAT/LINE 2.6 to 3.0
3.7 to 4.3
J1-5
VBAT
+7.3 to 9.0
+7.0 to 9.0
All values listed are in Volts DC
Impedance
(max)
130 ohms
0 ohms
Impedance
47 K ohms
0
ohms
Power Module
Connected
w/Alkaline
Battery
Installed
NC
PROTECTIVE
GND
0 (REF)
3.7 to 4.3
7.0 to 13.5
Power Module
Only
No
Battery
t9.0 to 16.0
PROTECTIVE
GND
0 (REF)
4.3 to 5.1
+7.5 to 13.5