user manual

2-6
Board Level Hardware Description
2
Specifications
Conformance to Requirements
These boards are designed to conform to the requirements of the
following specifications:
❏ VMEbus Specification (IEEE 1014-87)
❏ EIA-232-D Serial Interface Specification, EIA
❏ SCSI Specification
Table 2-1. MVME187 General Specifications
Characteristics SpeciÞcations
Power requirements
(with all four EPROM sockets
populated and excluding
external LAN transceiver)
+5 Vdc (+/-5%) 3.5 A (typical), 4.5 A (maximum)
(at 25 MHz, with 32MB parity DRAM)
5.0 A (typical), 6.5 A (maximum)
(at 33 MHz, with 128MB ECC DRAM)
+12 Vdc (+/-5%) 100 mA (maximum)
(1.0 A (maximum) with offboard LAN
transceiver)
-12 Vdc (+/- 5%) 100 mA (maximum)
Operating temperature 0û to 55û C at point of entry of forced air
(approximately 490 LFM)
Storage temperature -40û to +85û C
Relative humidity 5% to 90% (non-condensing)
Physical
dimensions
Double-high
VMEboard
PC board with
mezzanine
module only
Height 9.187 inches (233.35 mm)
Depth 6.299 inches (160.00 mm)
Thickness 0.662 inches (16.77 mm)
PC board with
connectors and
front panel
Height 10.309 inches (261.85 mm)
Depth 7.4 inches (188 mm)
Thickness 0.80 inches (20.32 mm)