PacComm TINY-2 Technical Reference Manual

TINY-2/MICRO-2 Technical Ref., 2. Ed 1989
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TABLE OF CONTENTS
INTRODUCTION ............................................................................... 4
Features ................................................................................ 4
NET/ROM and ROSE Compatibility ........................................... 4
COMPUTER INTERFACING ................................................................. 5
RS-232 Port Signals ................................................................ 5
Nonstandard RS-232C Serial Ports ........................................... 6
Serial Port Operation At TTL Levels .......................................... 7
Serial Data Signal Definitions .................................................. 7
RS-232C Handshaking Protocol ................................................ 9
RADIO INTERFACING ........................................................................ 10
Radio Connector (J2) Pin Definitions ........................................ 10
Direct Connection to Microphone and Speaker .......................... 10
Accessory Jack Connection ...................................................... 11
External Interface Box ............................................................ 11
HARDWARE DESCRIPTION ................................................................ 12
LEDs ..................................................................................... 12
Detailed Circuit Description ..................................................... 12
Modem Disconnect - J5 ........................................................... 13
ADJUSTMENTS ................................................................................. 16
Jumper Functions ................................................................... 16
JP B: Lithium Battery .................................................... 16
JP D: NET/ROM + RFDCD ............................................. 16
JP L: Digital Loopback .................................................. 16
JP RA: Audio Input Impedance ..................................... 16
JPAux: Auxiliary I/O ..................................................... 16
JP 8: Power Connection ................................................ 16
Trimpot/Varicap Adjustments .................................................. 16
Baud Rate Setting .................................................................. 16
Audio Input Level ................................................................... 17
Transmit Level Setting ............................................................. 17
Modem Receive Bias Adjustment ............................................. 18
Carrier Detect Level ................................................................ 18
Crystal Oscillator Adjustment .................................................. 18
TROUBLESHOOTING ......................................................................... 19
Loopback testing .................................................................... 20
Analog loopback .......................................................... 20
Digital loopback ........................................................... 20
General Tests ......................................................................... 20
Step 1: Obvious Problems ............................................. 20
Step 2: Power Supply ................................................... 21
Computer Terminal Interface .................................................. 21
Packet Controller won't sign on to the Computer ............ 21
The Controller prints only gibberish ............................... 21
The Controller won't accept commands ......................... 22

PacComm TINY-2 Specifications

General

Brand	PacComm
Model	TINY-2
Category	Controller
Language	English