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

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
Tip Phone High
Sleeve Phone Low
SUBJECT SWITCH (J7)
- - -
Function
P i n &
Switch High
Tip
Sleeve Switch Low
POWER INPUT (J1)
P i n # Name
- -
J1-1 VSUP
CHASGND
J1-2
CGND
Jl-3
BAT/LINE 2.6 to 3.0
Jl-4
VBAT
J1-5
All values listed are in Volts DC
Output Voltaqe
25 u VRMS to 2.5 VRMS
Output Voltaqe
Battery Power
No Power
Module
Attached
NC
PROTECTIVE
GND
0 (REF)
+7.3 to 9.0
(max)
0 Volts
+5 Vdc
0 Volts
Power Module
Connected
w/NiCad
Battery
Installed
NC
PROTECTIVE
GND
0 (REF)
3.7 to 4.3
+7.0 to 9.0
Impedance
130 ohms
0 ohms
Impedance
47 K ohms
ohms
0
Power Module
Connected
w/Alkaline Power Module
Battery Only
Installed No Battery
NC t9.0 to 16.0
PROTECTIVE PROTECTIVE
GND GND
0 (REF) 0 (REF)
3.7 to 4.3 4.3 to 5.1
7.0 to 13.5