Northstar Horizon

From: Don Maslin <donm_at_cts.com>
Date: Thu Jun 3 00:41:39 1999

On Wed, 2 Jun 1999, Fred Cisin (XenoSoft) wrote:

> Any good sources for routine and/or user information about the Horizon?
> f'rinstance: what's the pinout on those 15 pin D "parallel" connectors?
> Any chance the signals are close enough to be cabled into a centronics
> style port? I haven't applied power to it yet; anything exceptional to
> watch out for?
 
This should be of some help.

 
                      N* Horizon Port Info
 
     Serial Connector
     Pin # Signal Name Direction
      1 Chassis ground
      2 Transmit Data ->
      3 Receive Data <-
      4 Request to Send ->
      5 Clear to Send <-
      6 Data Set Ready <-
      7 Signal Ground
      8 Carrier Detect <-
      9 +12 volts (used in current loop)
      10 -12 volts (used in current loop)
      11 No connection
      12 No connection
      13 No connection
      14 No connection
      15 Transmit Clock <-
      16 No connection
      17 Receive clock <-
      18 No connection
      19 No connection
      20 Data Terminal Ready ->
      21 No connection
      22 No connection
      23 No connection
      24 Transmit Clock ->
      25 No connection
 
 
    BAUD Rate Selection (BAUD Rate header at location 20)
     Pin Rate
      16 9600 x 16 baud
      15 4800 x 16
      14 2400 x 16
      13 1200 x 16
      12 600 x 16
      11 300 x 16
      10 110 x 16
       9 150 x 16 or 75 x 16 baud
                      (selected by jumper J4 near 5D)
 
 
    Parallel Connector Pin Assignments
                 Input
     Pin Signal Name
       1 Data Bit 7
       2 Data Bit 5
       3 Ground
       4 Data Bit 2
       5 Data Bit 0
       6 Input Strobe
       7 P-I-FLAG/
       8 Spare
       9 Data Bit 6
      10 Data Bit 4
      11 Data Bit 3
      12 Data Bit 1
      13 Ground
      14 Ground
      15 Ground
 
                 Output
       1 Data Bit 7
       2 Data Bit 5
       3 Ground
       4 Data Bit 2
       5 Data Bit 0
       6 P-O-FLAG
       7 ACK/ (output device ready)
       8 Spare
       9 Data Bit 6
      10 Data Bit 4
      11 Data Bit 3
      12 Data Bit 1
      13 Ground
      14 Ground
      15 Ground
 

> > > Grumpy Ol' Fred cisin_at_xenosoft.com
> > ^^^^^^\
> > You really are, aren't you ?:-}
>
> If only 'twere still a joke. Some minor pain inducing health problems at
> my end.

Poor jest on my part, I fear.
                                                 - don
 
Received on Thu Jun 03 1999 - 00:41:39 BST