ICS TRIPLEX T8891 Channel output module

Use this command to display and configure the Board Information Block, which is resident within the NVRAM. The board information block contains various elements detailing specific operational parameters of the PowerPC board. The board structure for the PowerPC board is as shown in the following example for an MVME2600:The parameters that are quoted are left-justified character (ASCII) strings padded with space characters, and the quotes (") are displayed to indicate the size of the string. Parameters that are not quoted are considered data strings, and data strings are right-justified. The data strings are padded with zeroes if the length is not met. The Board Information Block is factory-configured before shipment. There is no need to modify block parameters unless the NVRAM is corrupted.

ENV – Set Environment 

Use the ENV command to view and/or configure interactively all PPCBug operational parameters that are kept in Non-Volatile RAM (NVRAM). Refer to the PPCBug Firmware Package User’s Manual for a description of the use of ENV. Additional information on registers in the Universe ASIC that affect these parameters is contained in your PowerPC board programmer’s reference guide. Listed and described below are the parameters that you can configure using ENV. The default values shown were those in effect when this publication went to print.

Configuring the VMEbus Interface 

ENV asks the following series of questions to set up the VMEbus interface for the MVME2300/MVME2600/MVME3600 /MVME4600 series modules. To perform this configuration, you should have a working knowledge of the Universe ASIC as described in the Programmer’s Reference Guide.

While the exact amount of airflow required for cooling depends on the ambient air temperature and the type, number, and location of boards and other heat sources, adequate cooling can usually be achieved with 10 CFM and 490 LFM flowing over the module. Less airflow is required to cool the module in environments having lower maximum ambients. Under more favorable thermal conditions, it may be possible to operate the module reliably at higher than 55° C with increased airflow. It is important to note that there are several factors, in addition to the rated CFM of the air mover, which determine the actual volume and speed of air flowing over a module.

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