APPLICATION NOTE 7104
GRE A
MERICA
, Inc. 425 Harbor Blvd. Belmont, California 94002 phone (650) 591-1400 fax (650) 591-2001
Subject: Configuration of GINA
RJ22 Jack
The purpose of this note is to provide
configuration information about the Voice Option
RJ22 Jack located on the front panel of
GINA
.This jack can be utilized for half-duplex
applications that require the transmission of FSK
or AFSK data.
GRE America, Inc. can supply the cable with an
RJ22 plug to mate to GINA
and flying leads on
the other.Contact the Marketing Department for
ordering information.
Referring to Diagram 1, the pin-out information is
as follows:
Pin 1 - Yellow - Speaker High
Pin 2 - Green - Microphone High
Pin 3 - Red - Push-to-talk (PTT)
Pin 4 - Black - Ground (GND)
To transmit data Pin 3 (PTT) must be placed
(shorted) to Pin 4 (GND).To receive data, this short
must be removed.
The input level to Pin 2 (microphone) should be
approximately 50 mV, AC coupled through a .1
mfd capacitor.
The output level at Pin 1 (Speaker) is
approximately 50 mV at 200 ohm.
Please report any errors or omissions to the
Applications Engineering Department of GRE
America, Inc.
GRE America, Inc.
Attn: Applications Engineering
425 Harbor Blvd.
Belmont, CA. 94002
Phone: 1-650-591-1500
Fax: 1-650-591-2001
E-mail: [email protected]
DIAGRAM 1
GINA
Front View
RJ-22 Jack
CAUTION !
GINA DUTY CYCLE IS DESIGNED FOR
HALF DUPLEX OPERATION. 50%
TRANSMIT / 50% RECEIVE. TO KEY
TRANSMIT FOR AN EXTENDED PERIOD
OF TIME WILL CAUSE DAMAGE TO
GINA AND VOID WARRANTY.