Specifications
4–4
VX1410 IntelliFrame Instruction Manual
Table 4–3: Cooling
1
Characteristic
Description
Slot Thermal Capacity
≥
130 W per slot, with a 10
°
C rise. Figure 4–1 on page
4–5 shows the cooling curve of the mainframe.
Cooling System
Forced air circulation (positive pressurization) with one
removable filter. Two internal DC fans provide cooling for
the power supply and the 13 VXIbus module slots.
Fan Speed Control
A rear panel switch chooses between full speed and
variable speed. The slot exhaust air temperature and
ambient air temperature are monitored to maintain a
constant temperature rise across the installed modules.
Slot Activation
Installing a VXIbus module activates the cooling for the
corresponding occupied slots by opening the IntelliGuide
mechanism. Only provides cooling to installed modules.
Slot Airflow Direction
P2 to P1, bottom of module to the top of module
Mainframe Intake
Bottom rear of mainframe
Mainframe Exhaust
Top sides of mainframe, also on top rear of mainframe
Cooling Clearance
Two inches on both sides and rear of mainframe
Pressurization
Positive (modules pressurized)
Filter Access
Filter accessible from rear of the mainframe
Temperature Readout
Readout of intake air temperature and individual slot
exhaust temperature through VXIbus or RS-232 (with
Option 1M)
Fan Speed Readout
RPM = 15 / (+Pulse Width), where (+Pulse Width) is the
positive pulse width of either of the Tach1 or Tach2 fan
output signals. Readout of system fan speed through
VXIbus or RS-232 (with Option 1M).
Delta Temperature Rise
Sensitivity, typical
100 mV per
°
C, 0
°
C corresponds to 0 V output
Temperature Sense Range, typical
–10
°
C to +90
°
C, Delta temperature rise
≤
50
°
C
Fan Speed Range, typical
1200 to 3350 RPM
1
If the VX1410 IntelliFrame is configured with Option 1D, Delete Power Supply, all
product specifications in this table do not apply. To be VXI compliant, the power
supply must adhere to the specifications of the VXI standard.
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