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TINY-2
PacComm TINY-2 Technical Reference Manual
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TINY
-2/MICRO-2 T
echnical Ref
.
, 2. Ed 1989
- 25 -
Computer Interfacing Diagrams
Atari Jo
ystick P
ort to TINY
-2/MICROPOWER
-2 T
TL P
ort
T
andy/Radio Shack Color C
omputer to TINY
-2/MICRO-2 RS-232 P
ort
Commodore
VIC
-20/C-64
/C-
128 User P
ort t
o TIN
Y
-2/MICRO-2 T
TL
P
ort
Apple Macintosh Comp
uters
24
26
Table of Contents
Table of Contents
2
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
Other Symptoms
22
TINY-2/MICRO-2 Appears Dead
22
Modem Won't Key Transmitter
22
Uncopyable Transmitted Packets
22
Uncopyable Received Packets
23
DCD LED Flickers Excessively or Stays on
23
Transmitter Locks in Transmit Condition
23
Appendices
24
Node Interconnection Cables
24
Dual TINY-2/MICRO-2 Node
24
Dual Node, TINY-2/MICRO-2 and TNC-2(00)
24
Triple Node
24
Computer Interfacing Diagrams
25
Radio Interfacing Diagrams
26
RS-232 Signal Table
27
Bit-Shifted ASCII Character Table
28
Schematic
29
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PacComm TINY-2 Specifications
General
Brand
PacComm
Model
TINY-2
Category
Controller
Language
English
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