[hpsdr] J16 confusion

Fri Aug 2 13:16:19 PDT 2013

Hi Guys

Now I'm confused, why not just use the last version of the manual? Phil did
update Hermes_User_Manual_V1.19 on Nov 11 2012 where J16 pins are clearly
named.

Regards
JCarlos
N4IS

-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Dick Faust
Sent: Friday, August 02, 2013 2:51 PM
To: Bill Diaz
Cc: hpsdr at lists.openhpsdr.org
Subject: Re: [hpsdr] J16 confusion

***** High Performance Software Defined Radio Discussion List *****

Some of the older versions of the manuals [back to ver 1.10] are available
on the svn in the Hermes Archives folder.  For older versions you will have
to find someone that downloaded that specific version.

As you so aptly diagramed it below, the current manual  is correct. [and has
been for about a year]

It is important to READ the documentation and not assume facts not in
evidence.
In Figure 4 of the manual every connector has pin 1 marked also on the PCB
every pin #1 is clearly marked with a square.
The schematic for that area has been the same since the prototype build and
has a clue to why the board was designed the way it was.
If you use the "BOM"  to assemble the board there is not a keyed IDC
connector specified for J16 [although all of the boards were built with one
even though the "BOM" says "26 PIN BERG (2x15)"]

When someone finds a /_similar_/ mating part  it behoves that person to
again to READ the documentation to be sure it really is a "mating part" 
and is configured properly for the intended use.  Or figure out how to
reconfigure the part.

Hopefully the confused will read Bill's re-explanation below and perhaps
print a copy for their documentation.

Fortunately or not the board was designed, reviewed and documented properly
for the design that it is and hundreds of boards have been produced that
work.  Pay attention to the documents or experience smoke.  Perhaps a
variation of the old Carpenters saw applies here too [measure twice - cut
once].

Dick K9IVB

Bill Diaz wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> J16 pin numbering confusion.
>
> I still hear from users confused by the J16 schematic numbering scheme 
> on both the Hermes, Angelia board KEYED IDC connectors and the Apache 
> Labs ANAN-100 and ANAN-100D DB25 accessory port.  Many of these users 
> are using breakout boards with KEYED 26 pin IDC connectors and they 
> cannot understand why the pinout on these boards differs from the  J16 
> pinout found on the Hermes and Angelia schematics.
>
> Both the assembled TAPR and Apache Labs Hermes boards were built with 
> a 26 pin KEYED IDC connector installed on board, designated J16 on the 
> schematics. IDC Pin 1 is clearly indicated on the top of the installed 
> KEYED 26 pin IDC connector.  Unfortunately, J16 KEYED IDC pin 1 
> actually corresponds with J16 pin 26 on the Hermes and Angelia 
> schematics, hence the confusion for users who use KEYED industry 
> standard IDC connectors for interconnection purposes.
>
> Some time ago Kjell explained how the pin numbering confusion 
> occurred,  Nuff said about that.  Hopefully, the following will lessen 
> some confusion.  BTW, much of the following information is from the
> ANAN-10 and ANAN-100 user docs.  RTFM for more details.
>
> Hermes_User_Manual_V1.17.pdf includes the following J16 note on page 14:
> IMPORTANT NOTE: The pin numbers may NOT correspond to individual 
> cables within an IDC ribbon cable. In particular, ex PC IDC cables do 
> NOT match the pin-outs shown in the photo.
>
> Clearly, the J16 pin numbers on the schematic WILL NOT correspond to 
> pin numbers of any KEYED 26 pin IDC connector a user may install in J16.
>
>  The following information details the correlation between the J16 pin 
> numbers on the Hermes and Angelia schematics and pin numbers found on 
> a standard 26 pin KEYED IDC connector.
>
> Note: The ANAN-100 and ANAN-100D further confuse the issue by using a
> DB25 female connector for the Accessory port (J16) and this changes 
> the pinout yet again!  See listing below the Hermes/Angelia J16 pinout 
> for details.
>
> Hermes/Angelia J16 pinout for 26 pin KEYED IDC ribbon cable.
> (Numbers in parentheses are J16 Pinout shown on Hermes and Angelia
> schematics)
>
> 1.  User Digital input 3: Connected to 3.3V via 1K pullup resistor 
> (26) 2.  Open-drain PTT output (25).
> 3   OCREF Open-Collector reference/flyback diodes (24)
> 4.  OC6 User open-collector output 7 (23) 5.  OC5 User open-collector 
> output 6 (22) 6.  OC4 User open-collector output 5 (21) 7.  OC3 User 
> open-collector output 4 (20) 8.  OC2 User open-collector output 3 (19) 
> 9.  OC1 User open-collector output 2 (18).
> 10. OC0 User open-collector output 1 (17)
> 11  User Digital input 2: Connected to 3.3V via 1K pullup resistor 
> (16)
> 12  Right channel speaker balanced (ROUT+) pair with pin 13 (15)
> 13  Right channel speaker, balanced (ROUT-) pair with pin 12 (14).
> 14  User Digital input 4: connnected to 3.3V via 1K pullup resistor 
> (13)
> 15  User Analogue input 2: 0-3V max (12)
> 16  User Analogue input 1: 0-3V max (11)
> 17  Analogue Ground (10)
> 18  User Digital input 1: Connected to 3.3V via 1K pullup resistor (9)
> 19  Right channel line Out (unbalanced) (8)
> 20  Left channel line Out (7)
> 21  Left channel phones output (6)
> 22  Right channel phones output(5)
> 23  Right channel line-level audio input (unbalanced) (4)
> 24  Left channel line-level audio input* (unbalanced) (3)
> 25  Analogue Ground (2)
> 26  PTT : connected to 3.3V via 1k pullup resistor(1) (same as Mic 
> PTT, J2 if JP6 used)
>
>
> The PowerSDR Setup, ANAN Ctrl tab numbering scheme for the J16 Receive 
> and transmit pins does not represent the actual keyed IDC pin numbers.
>
> PowerSDR
> As shown    IDC ribbon cable    Hermes Schematic
>    1            10            17
>    2            9            18
>    3            8            19
>    4            7            20
>    5            6            21
>    6            5            22
>    7            4            23
>                 3 OCRef.   24
>
>
> The Apache Labs ANAN-100 and ANAN-100D Accessory Port/J16/DB25 
> numbering confusion:
>
> The Hermes/Angelia schematic detail J16 pin numbering does not 
> correspond to KEYED IDC ribbon cable numbering conventions. An IDC to
> DB25 adapter cable further re-arranges the pin numbers available on 
> the rear panel Accessory Port of the ANAN-100 and ANAN-100D. J16-26 
> ANALOG 3 user input is lost, but it is not presently supported by 
> PowerSDR in any case.
>
>
> Pin out and connections between 26 pin J16, Modified (shifted) 26 pin 
> KEYED IDC ribbon cable and DB 25.
>
> J16       1  2  3  4  5  6  7  8  9  10 11 12 13 14 15 16 17 18 19 20 
> 21 22 23 24 25 26
> IDC   26 25 24 23 22 21 20 19 18 17  16 15 14 13 12 11 10  9  8  7 6  
> 5  4  3  2  1
> DB25     13 25 12 24 11 23 10 22  9 21  8 20  7  19  6 18  5 17  4 16  
> 3 15  2 14  1
>
>
> DB25 Acc Port pinout.  Number in parentheses is the J16 pin number 
> shown on the schematic.
>
> 1.  Open-drain PTT output (25)
> 2.  OC6 User open-collector output 7 (23) 3.  OC4 User open-collector 
> output 5 (21) 4.  OC2 User open-collector output 3 (19) 5.  OC0 User 
> open-collector output 1 (17) 6.  Right channel speaker balanced pair 
> (ROUT+) with pin 19 (15) 7.  User Digital input 4: connected to 3.3V 
> via 1K pullup resistor (13) 8.  User Analogue input 1: 0-3V max (11) 
> 9.  User Digital input 1: Connected to 3.3V via 1K pullup resistor (9) 
> 10. Left channel line Out (unbalanced) (7) 11. Right channel phones 
> output(5) 12. Left channel line-level audio input* (unbalanced) (3) 
> 13. PTT input, connected to 3.3V via 1K pullup resistor (1) 14. OCREf 
> Open-Collector reference/flyback diodes (24) 15. OC5 User 
> open-collector output 6 (22) 16. OC3 User open-collector output 4 (20) 
> 17. OC1 User open-collector output 2 (18) 18. User Digital input 2: 
> Connected to 3.3V via 1K pullup resistor (16) 19. Right channel 
> speaker, balanced pair (ROUT-) with pin 6 (14) 20. User Analogue input 
> 2: 0-3V max (12) 21. Analogue Ground (10) 22. Right channel line Out 
> (unbalanced) (8) 23. Left channel phones output (6) 24. Right channel 
> line-level audio input (unbalanced) (4) 25. Analogue Ground (2)
>
>
> The PowerSDR Setup, ANAN Ctrl tab numbering scheme for the J16 Receive 
> and transmit pins does not represent the actual pin numbers.
>
> PowerSDR        Acc Port
> As shown        DB25 cable    Hermes/Angelia Schematic J-16
>    1            5            17 OC0
>    2            17            18 0C1
>    3            4            19 OC2
>    4            16            20 OC3
>    5            3            21 OC4
>    6            15            22 OC5
>    7            2            23 OC6
>             14 OC REF      24 OC REF
>
>
> HTH,
> Bill KC9XG
>
>
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