Fluke Biomedical 956A-201-M2 - Manual (Page 20)

2-2
Table 2-2 Divide Options Jumper Position
Jumper Position Divide Option
J1, J2 AB 2, square wave output (factory set)
J1, J2 BC 1, direct coupled
2.4 UDR MOUNTING
The UDR is a self-contained unit that can be mounted in four different ways.
When installing the UDR in enclosed panels or cabinets, ensure
that the maximum operating temperature (122
° F) is not exceeded.
The total heat load should be calculated to determine whether
cooling by natural convection or forced ventilation (i.e. fans) is
required. The heat load for a single UDR is approximately 96
BTU/hr.
Where more than four units are to be mounted in a cabinet, it is
recommended that the center position in each chassis be left blank
to facilitate the flow of cooling air through the cabinet.
For seismic applications, the rear of the chassis must be
supported, or the sides of the chassis must be fastened
together. For further information, contact Cardinal Health,
Radiation Management Services.
To protect the monitor from EMI/RMI transients, the Rack
Chassis must be connected to an earth ground.
1. The first mounting utilizes a 19-inch rack chassis adapter, Victoreen Model 948-1. This configuration
requires 3.5 inches of rack height and can be used to mount up to three UDRs side by side. A blank
filler panel, Victoreen Model 948A-2, is available to cover unused mounting positions. Refer to
drawing GEL-948-1 for mounting dimensions.
Where EMI/RFI compliance is required, the Model 948B-1A-5 Dual Channel rack chassis is
available. The Model 948B-1A-5 is designed to accept two Model 956A UDR’s, mounted in the left
and right side positions. The center position is used to mount a Model S157033A2 Line Filter/Surge
Suppressor Assembly. AC power for each channel is routed to the surge suppressor, which then
feeds the AC power to the 956A UDR’s. Refer to GEL-948B-1A for mounting dimensions.
2. The second mounting consists of a single channel tabletop enclosure, Victoreen Model 948-3.
Dimensions for the enclosure are 4.5 inches high by 6.8 inches wide by 14.9 inches deep. Refer to
drawing 948-3-5 for mounting dimensions.
3. The third mounting consists of a panel mount enclosure, Victoreen Model 948-9. Cutout dimensions
for this enclosure are 3.75 inches high by 6.45 inches wide; the outside dimensions for the enclosure
are 4.0 inches high by 6.7 inches wide by 13.7 inches deep. Refer to drawing 948-9-5 for mounting
dimensions.
CAUTION
NOTE
NOTE
NOTE