Controls And Indicators; Status Leds; Serial Port Configuration; Screen Displays - Advanced Electronic Applications PK-88 Operating Manual

PK-88 OPERATING MANUAL
2.3

Controls and Indicators

The PK-88 has a single rear-panel control:
o POWER ON/OFF push switch - disconnects power from external supply.
2.4

Status LEDs

The PK-88's front panel has the following LED (Light Emitting Diode) indicators:
CONV
TRANS
CMD
SEND
DCD
STA
CON
MULT
PWR
2.5

Serial Port Configuration

Verify that the PK-88's serial port and data words are set up properly for your computer.
Should your monitor display garbled or incorrect characters or 'funny' graphic symbols, you
can change the PK-88's serial port parity and word length. The common parity and word
length combination is seven data bits, even parity, one stop bit.
Your computer will probably accept the PK-88's default setting, even if it actually uses a dif-
ferent setting. If your computer requires eight data bits, you may have to set parity to
'none'; otherwise text may be interpreted as graphics or other special characters.
To set eight bits, no parity, type:
AWLEN 8
To return to seven bits, even parity, type:
AWLEN 7
You must type the command
tions will satisfy most computers. You are more likely to require a different setting if you
have a 'dumb' terminal rather than a computer, or if you have configured your computer's
serial port for some special application. If your computer needs odd parity, set PARITY to 1.
If you see framing errors, try this for shorter characters:
AWLEN 7
2.6

Screen Displays

Some computers and terminal programs are configured to certain default characteristics that
may at first seem incompatible with the PK-88. Follow these hints as you begin to 'dialogue'
with your new TNC.
System is in Converse Mode
System is in Transparent Mode
System is in Command Mode
Transmitter Push-to-Talk line is enabled
Data Carrier Detect
Packet frame(s) unacknowledged
Packet link is in connected state
Multiple Connection in progress
Power On Indicator
(eight-bit words) PARITY 0
(seven-bit words) PARITY 3
RESTART
(seven-bit words) PARITY 0
(no parity bit)
(even parity)
for the settings to take effect. One of these combina-
(no parity bit)
2 - 3
INSTALLATION
PK-88 - 19