VXi 3002 用户手册
INSTALLATION AND POWER-UP
2-2
Installing in VXI mainframe
This instrument will take up two slots of a C-sized VXI mainframe. Before installation ensure that
the mainframe power is off. To install the instrument first set the logical address (see ‘Setting
logical address’ above), if required, then slide the module into the mainframe ensuring that the top
and bottom card guides are in the slots. Ensure that the rear connectors are seated properly and
screw in the front panel retaining screws. The instrument is now ready to power up.
the mainframe power is off. To install the instrument first set the logical address (see ‘Setting
logical address’ above), if required, then slide the module into the mainframe ensuring that the top
and bottom card guides are in the slots. Ensure that the rear connectors are seated properly and
screw in the front panel retaining screws. The instrument is now ready to power up.
Routine safety testing and inspection
1. Visual inspection
In the UK the 'Electricity at Work Regulations' (1989) section 4(2) places a requirement on the
users of equipment to maintain it in a safe condition. The explanatory notes call for regular
inspections and tests together with a need to keep records.
users of equipment to maintain it in a safe condition. The explanatory notes call for regular
inspections and tests together with a need to keep records.
This module is not designed to be connected to a supply or signals which present hazardous levels,
and no hazardous voltages are generated internally. All such levels must be maintained within
'Separated Extra-Low Voltage' (SELV or SELV-E) limits for continued safety. No requirement
therefore exists to carry out insulation tests on the module. Periodic electrical tests and visual
inspections should however be performed on the complete mainframe/chassis by competent
personnel. Information should be sought from the mainframe supplier regarding the visual
inspection, earth bonding and insulation resistance test requirements.
and no hazardous voltages are generated internally. All such levels must be maintained within
'Separated Extra-Low Voltage' (SELV or SELV-E) limits for continued safety. No requirement
therefore exists to carry out insulation tests on the module. Periodic electrical tests and visual
inspections should however be performed on the complete mainframe/chassis by competent
personnel. Information should be sought from the mainframe supplier regarding the visual
inspection, earth bonding and insulation resistance test requirements.
Visually check that the module has been installed in accordance with the instructions provided (e.g.
that the ventilation is adequate, all fixing screws are present and tightened, and that all warning
labels, markings and supplied safety information are present and legible). If any defect is noted
this should be rectified before proceeding with further electrical tests.
that the ventilation is adequate, all fixing screws are present and tightened, and that all warning
labels, markings and supplied safety information are present and legible). If any defect is noted
this should be rectified before proceeding with further electrical tests.
No attempt should be made to perform high current earth bonding tests on the functional earths
(e.g. signal carrying connector shells or screen connections) present on the module connectors.
High current earth bonding tests are also not recommended between the mainframe protective earth
connector and the module front panel. Serious damage may result to both the module and the
mainframe if the module is not fully screwed into the mainframe during high current testing. Low
current earth bonding tests (1 mA to 100 mA) should be performed to establish earth path
continuity between the module front panel and the mainframe protective earth.
(e.g. signal carrying connector shells or screen connections) present on the module connectors.
High current earth bonding tests are also not recommended between the mainframe protective earth
connector and the module front panel. Serious damage may result to both the module and the
mainframe if the module is not fully screwed into the mainframe during high current testing. Low
current earth bonding tests (1 mA to 100 mA) should be performed to establish earth path
continuity between the module front panel and the mainframe protective earth.
2. Rectification
It is recommended that the results of the above tests are recorded and checked during each repeat
test. Significant differences between the previous readings and measured values should be
investigated.
test. Significant differences between the previous readings and measured values should be
investigated.
If any failure is detected during the above visual inspection or tests, the equipment should be
disabled and the fault should be rectified by an experienced Service Engineer who is familiar with
the hazards involved in carrying out such repairs.
disabled and the fault should be rectified by an experienced Service Engineer who is familiar with
the hazards involved in carrying out such repairs.
Safety critical components should only be replaced with equivalent parts, using techniques and
procedures recommended by Aeroflex.
procedures recommended by Aeroflex.
The above information is provided for guidance only. Aeroflex designs and constructs its products
in accordance with International Safety Standards such that in normal use they represent no hazard
to the operator. Aeroflex reserves the right to amend the above information in the course of its
continuing commitment to product safety.
in accordance with International Safety Standards such that in normal use they represent no hazard
to the operator. Aeroflex reserves the right to amend the above information in the course of its
continuing commitment to product safety.
Never insert or remove the instrument when the mainframe is already powered up.