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APPLICATION NOTES LBI-3912
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APPLICATION NOTES
VAX SITE CONTROLLER COMPUTER
Make sure that the Site Controller computer, at the
location where this PMU is to be installed, is a VAX model
or a PDP model that has been upgraded to a VAX model. To
determine if a PDP model has been upgraded internally to a
VAX model, you must look inside the PDP system chassis
and see which cards are installed. PDP models that have
been upgraded to a VAX model will have their cards
arranged in the card cage as shown in Figure 2.
KA620-BA
MS630-BB
MRV11-D H3656-00
CQ1610#1
CQ1610#2
EMPTY
EMPTY
EMPTY
Figure 2 - Card Layout for PDP Upgraded to VAX
APPLICATION SOFTWARE PROMS
The Site Controller computer’s Application Software
PROMs must be marked 344A3265Gx, where x = 6 or
higher. (Application Software PROMs with x = 5 or lower
will not work for the new PMU.) If new Application
Software PROMs are needed, they should be ordered when
ordering the new PMU.
PERSONALITY PROMS
The Site Controller computer’s Personality PROMs
must be replaced, even if the system currently has an old
PMU and a System Manager. New Personality PROMs
should be ordered when ordering the new PMU.
When ordering new Personality PROMs, you must give
the correct information for the following four PMU
parameters (don’t assume that the person taking the order
will know what you want, need, or the recommendations
given here):
•
PMU Enable
- This parameter set (mask) defines
(for each channel) if that channel number is to be
monitored by the PMU. This parameter is not
System Manager re-configurable and therefore all
equipped channels must be enabled. It is
recommended that all 20 channels be enabled
(equipped or not).
•
Power Monitor Unit
- This parameter can be set
to “Off” (if you want the PMU option disabled) or
“On” (if you want the PMU option enabled). This
parameter is System Manager re-configurable, but
must be set to “On” if the site is being operated
without a System Manager. It is recommended that
this parameter be set to “On”, even if the site is
being operated with a System Manager.
•
PMU Model
- This parameter can be set to “Old-
8843” (PMU protocol set to 2400 Baud for Decibel
Products DB8843 based old PMU) or “New-8860”
(PMU protocol set to 9600 Baud for Decibel
Products DB8860 based new PMU). This
parameter is not System Manager re-configurable
and therefore must be set to “New-8860”.
•
PMU Power Levels
- This parameter defines the
lower power level limit for all transmitters (one
limit is applied to all). This parameter is System
Manager re-configurable, but must be set to some
power level lower than rated power if the site is
being operated without a System Manager. It is
recommended that this parameter be set to 50% of
the rated power, even if the site is being operated
with a System Manager.
If this PMU option is being installed in the field,
these Personality PROMs must be changed, even
if the system currently has the old PMU option
and a System Manager.
NOTE