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An [RTM](https://edms.cern.ch/item/EDA-02494-V2-0/0) for the
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CONV-TTL-RS485 board has already been designed and tested. It is a 6
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channel RTM with each channel capable of receiving one input in RS485
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and repeating it on 3 outputs.
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This RTM uses LEMO 0S connectors with 2
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pins.
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## RTM for the CONV-TTL-RS485 board in D-Sub9 format
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[![](/uploads/4e78ed0f4b6eb5512980a1cd143d7622/db9rtm-mockup-small.png)](/uploads/16f77ac7d87a9cffa6a78b20e7fb745a/db9rtm-mockup.PNG)
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\_Side-by-side are the current CONV-TTL-RS485 RTM with LEMO 0S
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interface
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and a mock-up of the 2-channel version with D-Sub9 interface\_
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[![](/project/conv-ttl-rs485/uploads/b428e484e5468b5d20756c353cc3bdaa/conv-ttl-rs485-db9-side-small.jpg)](/project/conv-ttl-rs485/uploads/157155c6ca74ad0441765d8dd780c014/conv-ttl-rs485-db9-side.jpg)
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[![](/project/conv-ttl-rs485/uploads/137d1251e4b48e56ef09c7e878f3d97c/conv-ttl-rs485-db9-fp-small.jpg)](/project/conv-ttl-rs485/uploads/36778b920b5f2811b11245a5e07e712b/conv-ttl-rs485-db9-fp.jpg)
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A new RTM design for the CONV-TTL-RS485 is being proposed to fullfill a
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A new RTM design for the CONV-TTL-RS485 has been proposed to fullfill a
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number of user requirements:
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- **User requirements** (CERN specific):
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... | ... | @@ -27,16 +19,15 @@ number of user requirements: |
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<!-- end list -->
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- **Proposed solution**
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- Design a new RTM with D-Sub 9 interface for I/O.
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- The RTM will repeat 2 channels of the 6 available from the
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conv-ttl-rs485 board.
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- Each of the two channels will repeat the input signal on 5
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output ports (Limited by the physical size of the RTM Piggyback
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panel).
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- The RTM must be designed in the *piggyback* format, similar to
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the [LEMO 0S RTM](https://edms.cern.ch/item/EDA-02494-V2-0/0),
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in order to be mounted on the same [RTM
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- **Design specification**
|
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- RTM with D-Sub 9 interface for I/O.
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- The RTM repeats on 2 channels (channel 1 and channel 2) of the 6
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available from the CONV-TTL-RS485 board.
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- Each of the two channels has one input signal and 5 output
|
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ports.
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- The RTM is designed in the *piggyback* format, similar to the
|
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[LEMO 0S RTM](https://edms.cern.ch/item/EDA-02494-V2-0/0) (see
|
|
|
below), in order to be mounted on the same [RTM
|
|
|
motherboard](https://edms.cern.ch/project/EDA-02452)
|
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used for
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[CONV-TTL-RS485](https://www.ohwr.org/project/conv-ttl-blo/wiki)
|
... | ... | @@ -44,23 +35,82 @@ number of user requirements: |
|
|
[CONV-TTL-BLO](https://www.ohwr.org/project/conv-ttl-blo-hw/wiki)
|
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|
RTMs.
|
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## [LEMO 0S RTM](https://edms.cern.ch/item/EDA-02494-V2-0/0) (NO LONGER SUPPORTED)
|
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|
|
|
An RTM for the CONV-TTL-RS485 board has already been designed and
|
|
|
tested. It is a 6 channel RTM with each channel capable of receiving one
|
|
|
input in RS485 and repeating it on 3 outputs.
|
|
|
This RTM uses LEMO 0S connectors with 2 pins. This RTM is now no longer
|
|
|
suppoted, and only a few prototypes exist of this
|
|
|
design
|
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|
|
|
[![](/uploads/4e78ed0f4b6eb5512980a1cd143d7622/db9rtm-mockup-small.png)](/uploads/16f77ac7d87a9cffa6a78b20e7fb745a/db9rtm-mockup.PNG)
|
|
|
|
|
|
\_Side-by-side are the current CONV-TTL-RS485 RTM with LEMO 0S
|
|
|
interface
|
|
|
and a mock-up of the 2-channel version with D-Sub9 interface\_
|
|
|
|
|
|
-----
|
|
|
|
|
|
## Versions
|
|
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## Hardware versions
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## Rear transition module (Motherboard + piggyback) : EDA-02452
|
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<table>
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<tbody>
|
|
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<tr class="odd">
|
|
|
<td>[EDA-02452-V3-1](https://edms.cern.ch/nav/P:EDA-02452:V0/I:EDA-02452-V3-1:V0/TAB4)</td>
|
|
|
<td><strong>No longer supported</strong> Third version, moves the 100-pin connector to the inside of the board, to avoid bending the panel</td>
|
|
|
</tr>
|
|
|
<tr class="even">
|
|
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<td>[EDA-02452-V3-3](https://edms.cern.ch/nav/P:EDA-02452:V0/I:EDA-02452-V3-1:V0/TAB4)</td>
|
|
|
<td><strong>Closed</strong> First version with <a href="https://edms.cern.ch/item/EDA-03712-V1-0/0">D-Sub9 piggyback</a>. Layout of connectors on piggyback incorrect. See issue #1751</td>
|
|
|
</tr>
|
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|
<tr class="odd">
|
|
|
<td>[EDA-02452-V3-4](https://edms.cern.ch/nav/P:EDA-02452:V0/I:EDA-02452-V3-1:V0/TAB4)</td>
|
|
|
<td>Uses same RTM motherboard but with new piggy back <a href="https://edms.cern.ch/item/EDA-03712-V2-0/0">EDA-03712-V2-0</a> for DB9 connector compatibility</td>
|
|
|
</tr>
|
|
|
</tbody>
|
|
|
</table>
|
|
|
|
|
|
## Rear transition module piggyback in D-Sub9 format: EDA-03712
|
|
|
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|
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Mounted on EDA-02452, to give EDA-02452-V3-3/V3.4
|
|
|
|
|
|
<table>
|
|
|
<tbody>
|
|
|
<tr class="odd">
|
|
|
<td><b> Version </b></td>
|
|
|
<td><b> Description </b></td>
|
|
|
</tr>
|
|
|
<tr class="even">
|
|
|
<td>[EDA-03712-V1-0](https://edms.cern.ch/item/EDA-03712-V1-0/0)</td>
|
|
|
<td><strong>Closed</strong> First version of a 2-channel 1 i/p, 5 o/p RTM piggyback with D-Sub9 connectors</td>
|
|
|
</tr>
|
|
|
<tr class="odd">
|
|
|
<td>[EDA-03712-V2-0](https://edms.cern.ch/item/EDA-03712-V2-0/0)</td>
|
|
|
<td>Corrects issue #1751 found on version 1. Uses different connectors with built-in screwlocks</td>
|
|
|
</tr>
|
|
|
</tbody>
|
|
|
</table>
|
|
|
|
|
|
## <s>Rear transition module piggyback in LEMO 0S format: EDA-02494</s>: **No longer supported**
|
|
|
|
|
|
Mounted on EDA-02452, to give EDA-02452-V3-1.
|
|
|
|
|
|
<table>
|
|
|
<tbody>
|
|
|
<tr class="odd">
|
|
|
<td><strong>Version</strong></td>
|
|
|
<td><strong>Hardware Design Files</strong></td>
|
|
|
<td><b> Version </b></td>
|
|
|
<td><b> Description </b></td>
|
|
|
</tr>
|
|
|
<tr class="even">
|
|
|
<td>[1.0](https://www.ohwr.org/versions/180)</td>
|
|
|
<td>[EDA-03712-V1-0](http://edms.cern.ch/nav/EDA-03712-V1-0)</td>
|
|
|
<td>[EDA-02494-V1-0](https://edms.cern.ch/nav/P:EDA-02452:V0/I:EDA-02494-V1-0:V0/TAB4)</td>
|
|
|
<td><strong>Closed</strong> First version</td>
|
|
|
</tr>
|
|
|
<tr class="odd">
|
|
|
<td>[2.0](https://www.ohwr.org/versions/180)</td>
|
|
|
<td>[EDA-03712-V2-0](http://edms.cern.ch/nav/EDA-03712-V2-0)</td>
|
|
|
<td>[EDA-02494-V2-0](https://edms.cern.ch/nav/P:EDA-02452:V0/I:EDA-02494-V2-0:V0/TAB4)</td>
|
|
|
<td><strong>No longer supported</strong> Second version, connects the RTMP detection lines to the 100-pin connector and the N lines on the Lemo 0S connector</td>
|
|
|
</tr>
|
|
|
</tbody>
|
|
|
</table>
|
... | ... | |