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PK-232 MBX Operating Manual - N3UJJ

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o Type to stop sending when the transmit buffer is empty.<br />

breaks the link and returns your <strong>PK</strong>-<strong>232</strong> to Command Mode.<br />

7.3.6 LED Status and Mode Indicators<br />

All the LEDs on the front of the <strong>PK</strong>-<strong>232</strong> are there to help give you the<br />

units status at a glance. This is especially true in AMTOR operation.<br />

The following describe typical LED status indications you will see.<br />

Type "ARQ (SELCALL of distant station)." The LEDs change to:<br />

STATUS:<br />

MODE:<br />

SEND lit, PHASE lit<br />

ARQ lit<br />

These LEDs show that your transmitter is in the SEND condition, in the<br />

"phasing" part of an ARQ selective call. Your transmitter will key on<br />

and off sending the distant station's SELCALL. As soon as your <strong>PK</strong>-<strong>232</strong><br />

is synchronized with the distant station, the LEDs change to:<br />

STATUS:<br />

MODE:<br />

SEND lit, TFC and IDLE lit alternately by data flow<br />

ARQ lit<br />

Verify the link by typing a few s; watch the display. Your<br />

traffic will now begin to flow as you type characters. If EAS is set<br />

ON, your typed characters are displayed as they are acknowledged by<br />

the distant station. The IDLE and TFC LEDs change back and forth<br />

whenever your typing pauses.<br />

If errors occur on the link and the distant station sends RQ (Request<br />

for Repeat), the LEDs show:<br />

STATUS<br />

MODE<br />

SEND lit, ERROR and/or RQ lit<br />

ARQ lit<br />

ERROR lit:<br />

RQ lit:<br />

Your <strong>PK</strong>-<strong>232</strong> has detected errors in the signals<br />

received from the distant station<br />

Your <strong>PK</strong>-<strong>232</strong> has received a "request for repeat"<br />

code from the distant station<br />

If the link fails and you lose synchronization with the distant<br />

station your <strong>PK</strong>-<strong>232</strong> automatically tries to re-establish<br />

synchronization with the distant station. The LEDs change to show:<br />

STATUS:<br />

MODE:<br />

SEND lit, PHASE lit, ERROR and RQ alternately lit<br />

ARQ lit<br />

After typing FEC, your <strong>PK</strong>-<strong>232</strong> displays system status on its LEDs:<br />

STATUS:<br />

MODE:<br />

SEND lit, IDLE lit, TFC lit only briefly<br />

FEC lit<br />

As you send your traffic the TFC LED will light. Whenever you stop<br />

typing, the TFC LED is extinguished and the IDLE LED is lit.<br />

STATUS:<br />

MODE:<br />

SEND lit, TFC and IDLE lit alternately by data flow<br />

FEC lit<br />

4/91 7-6<br />

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