1261B User Manual
Specification A-12
Racal Instruments
Ó
1995
Characteristics
Description
Auxiliary Rear Panel DC Voltage Outputs
Voltage Current
+5 V 1 Amp maximum, (Self Healing Fuse)
+12 V 1 Amp maximum, (Self Healing Fuse)
+24 V 1 Amp maximum, (Self Healing Fuse)
Maximum slot temperature (
Tmax
)
Rear
Panel Output Voltage
100 mV per
o
C, 0
o
C corresponds to 0 V output
± 1.5
o
C accuracy,
-5 to + 85
o
C range
Fan Speed Control
0V = Minimum fan speed
1V = Maximum fan speed
± 1.5
o
C accuracy,
-5 to + 85
o
C range
Fan Speed
TACH
Rear Panel Outputs
2 Pulses/Rev, each fan has TTL level Tach output
Fan Speed Range, typical
2000 to 4800 RPM
VXI Power Supply
Voltage
Health Status
Readout
Available at :
Front Panel Display,
VXI Message Based Interface,
RS-232 interface
Default Tolerance limits: V nom -8.75%, +10%
3% accuracy
VXI Power Supply
Current
Health Status
Readout
Available at :
Front Panel Display,
VXI Message Based Interface,
RS-232 interface
Default Tolerance limits: 107 % of rated current
7% accuracy, at full scale, typical
VXI Power Supply
Temperature
Health
Status Readout
Available at :
Front Panel Display (1 x 10 Characters),
VXI Message Based Interface,
RS-232 interface
Absolute Temp. = 55
o
C
Default Tolerance limits:
)
T
> 30
o
C,
Tamb
> 55
o
C
± 1.5
o
C accuracy,
-5 to + 85
o
C range
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