INTRODUCTION AND OPERATION
1-4
September 1994
Part No. 001-2008-300
You may also send your order by mail or FAX.
The mailing address is as follows and the FAX num-
ber is shown in Section 1.6.
E.F. Johnson Company
Service Parts Department
299 Johnson Avenue
P.O. Box 1249
Waseca, MN 56093-0514
1.10 SOFTWARE UPDATES/REVISIONS
All inquiries concerning updated software, its
installation and revisions should be directed to the
Customer Service Department (see Section 1.6).
1.11 UNIVERSAL STATION OPERATION
1.11.1 THIRD PARTY INTERFACE (TPI)
Refer to Figure 1-2.
Programming Jack
J1 provides input connection from the computer
and the "flash memory" in the TPI. The programming
information in an IBM
compatible personal com-
puter programs the TPI directly from the serial port
through interconnect cables connected to the COM1
or COM2 port.
Reset
S1 provides a manual reset of the Third Party
Interface (TPI) microprocessor. A manual reset
causes a complete power-up restart.
Display and LEDs
Each combination of DS1 display read-out and
CR4/CR5 indication refers to an active alarm. See
Table 1-2 for alarms and definitions. When CR1 is
blinking, the TPI is operational. CR2 is the high
power indicator and CR3 is not assigned at this time.
Alarms
When the Repeater is in the test mode the safety
measures are disabled. Therefore, if the Universal
Station is keyed for an extended period and the power
amplifier temperature increases, thermal shutdown
will not occur. There are pop-up windows that will
appear in the Test mode screens to alert the user that
there is an alarm and action should be taken. Refer to
Figure 1-1 for an example of this type of alarm.
Figure 1-1 ALARM IN TEST MODE
External Speaker Jack
J104 provides local audio output to an external
speaker. The local volume control adjusts the volume
level of this speaker.
Speaker/Microphone Jacks
J102 provides audio input from a microphone.
J101 provides the receive audio to the microphone.
Local On/Off/Volume Control
R164 provides control of the receive audio output
to J101 and J104. Turning this control clockwise past
the detent applies voltage to the local audio amplifier.
A/D Level Test Point
J100 provides audio/data level output for test
level checks.
Ground
J103 is the ground connection for test equipment
when monitoring test point J100.
1.11.2 INTERFACE ALARM CARD (IAC)
Voltage Test Output
J502 provides a test point to m15V sup-
ply on the IAC. Refer to Figure 1-2.
NOTE: Safety measures are disabled
RF Thermal Sense Alarm Condition Exists
Ok
