K3 Serial Interface

[kd1na]

K3 Owners,
In order to download and install new firmware do I need only
pin 2 (RXD), Pin 3 (TXD), and Pin 5 (Common or SER C) connected in my serial interface cable from the computer?

The schematic shows, in addition to the above, some handshake connections:
Pin 7 (RTS) and Pin 4 (DTR).
The reason I am asking is I plan to use the Rigblaster Pro to interface with my K3 and Not sure that the serial pass through connection contains the Pin 7 and 4 connections. I have already got successful remote operation with my K2 using the Rigblaster Pro. I am aware that the K2 doesn't use any handshake (Pin 4 and 7) connections for serial interface.

Thanks in advance.

73
Dave KD1NA
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[KK7P]

> In order to download and install new firmware do I need only
> pin 2 (RXD), Pin 3 (TXD), and Pin 5 (Common or SER C) connected in my serial interface cable from the computer?

Yes, only these.

> The schematic shows, in addition to the above, some handshake connections:
> Pin 7 (RTS) and Pin 4 (DTR).

These are for KEY and PTT inputs supported by some programs.  They are
not used in firmware downloading.

73,

Lyle kK7P

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Dick Dievendorff]

Hi, Dave!  I put this text into the K3 Utility Help on the topic of RS-232
cable requirements:

The cable must have a minimum of three wires: Transmit Data, Receive Data,
and Ground. Other RS-232 lines (e.g., Request to Send, Clear to Send, Data
Set Ready, Data Terminal Ready) are not required to send firmware.

The DTR and RTS lines may be used during normal K3 operation for PTT and CW
keying. See the Rear Panel and the CONFIG:PTT_KEY sections of the Elecraft
K3 Owner's Manual for details.

73 de Dick, K6KR



-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of David Robertson
Sent: Friday, May 16, 2008 10:48 AM
To: Elecraft
Subject: [Elecraft] K3 Serial Interface

K3 Owners,
In order to download and install new firmware do I need only
pin 2 (RXD), Pin 3 (TXD), and Pin 5 (Common or SER C) connected in my serial
interface cable from the computer?

The schematic shows, in addition to the above, some handshake connections:
Pin 7 (RTS) and Pin 4 (DTR).
The reason I am asking is I plan to use the Rigblaster Pro to interface with
my K3 and Not sure that the serial pass through connection contains the Pin
7 and 4 connections. I have already got successful remote operation with my
K2 using the Rigblaster Pro. I am aware that the K2 doesn't use any
handshake (Pin 4 and 7) connections for serial interface.

Thanks in advance.

73
Dave KD1NA
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft   

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com