Trigger Board Front Panels
Displays
The trigger board front panels generally have a set of LEDs indicating
the board status mostly from the CSR bits in the fast control logic.
These displays have proven to be very useful for the board testing and
commissioning. An example of the existing TSF front panel can be seen
at the following
picture. For an example of what signals are wired to the
front panel LEDs, see e.g. the
GLT schematics at the FDR page, for the fp_led schematics.
Mechanical
Most VME boards made at SLAC are following a similar procedure.
The front panel kit is purchased (e.g. Elma Electronics product)
which include the standard blank front panel with just a few
holes at standard locations. A SLAC layout person does the
design/layout for the front panel and the silkscreen is given
to a local vendor (ADEM LLC) who anodize and front panel, punching
additional holes, engrave all lables etc. It is especially
important to make sure we have th right latch for board
insertion and release.
The 9U front panel kit comes from
Elma Electronics.
Their website is not particularly well organized, nor does it have
a complete listing of their products. For ZPD boards, the purchased
parts were:
- 21N-904-41 : Front Panel
- 63-371 : Injector/Ejector Kit for one panel
- 63-480 : retainers and screws for 5 front panels
A more inclusive kit pack used for interface boards:
- 63-469 : Injector/Ejector and FP retainer + screws for one panel
Other combinations of kits are also available. Contact Elma for
part numbers. The detailed information on the various card accessory
information can be found at here:
Front panels,
Latches. The relevant pages are extracted here: Front panel, Latches, Latch-panel mount, where you can check
the actual mechanical information. Note that the recommended latch type
is the IEC standard injector/ejector handle 63-359, but that particular kit
is missing the panel-latch mounting retainer piece of 63-366. The kit
used for ZPD and intreface boards are various combinations of the pieces
from these items.
For the full front panel decoration:
A small company in Santa Clara, ADEM LLC, Jacob Obolsky, 408-727-8955,
http://web.www.admllc.com.
They typically charge ~$40 per panel.
Page author:
Su Dong
| Last significant update: 19-Apr-2002 |
Expiry date: 31-Jul-2002 |
|
