o Type <CTRL-D> to stop sending when the transmit buffer is empty.
<CTRL-D> breaks the link and returns your PK-232 to Command Mode.
7.3.6 LED Status and Mode Indicators
All the LEDs on the front of the PK-232 are there to help give you the
units status at a glance. This is especially true in AMTOR operation.
The following describe typical LED status indications you will see.
Type "ARQ (SELCALL of distant station)." The LEDs change to:
STATUS: SEND lit, PHASE lit
MODE: ARQ lit
These LEDs show that your transmitter is in the SEND condition, in the
"phasing" part of an ARQ selective call. Your transmitter will key on
and off sending the distant station's SELCALL. As soon as your PK-232
is synchronized with the distant station, the LEDs change to:
STATUS: SEND lit, TFC and IDLE lit alternately by data flow
MODE: ARQ lit
Verify the link by typing a few <Enter>s; watch the display. Your
traffic will now begin to flow as you type characters. If EAS is set
ON, your typed characters are displayed as they are acknowledged by
the distant station. The IDLE and TFC LEDs change back and forth
whenever your typing pauses.
If errors occur on the link and the distant station sends RQ (Request
for Repeat), the LEDs show:
STATUS SEND lit, ERROR and/or RQ lit
MODE ARQ lit
ERROR lit: Your PK-232 has detected errors in the signals
received from the distant station
RQ lit: Your PK-232 has received a "request for repeat"
code from the distant station
If the link fails and you lose synchronization with the distant
station your PK-232 automatically tries to re-establish
synchronization with the distant station. The LEDs change to show:
STATUS: SEND lit, PHASE lit, ERROR and RQ alternately lit
MODE: ARQ lit
After typing FEC, your PK-232 displays system status on its LEDs:
STATUS: SEND lit, IDLE lit, TFC lit only briefly
MODE: FEC lit
As you send your traffic the TFC LED will light. Whenever you stop
typing, the TFC LED is extinguished and the IDLE LED is lit.
STATUS: SEND lit, TFC and IDLE lit alternately by data flow
MODE: FEC lit
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