User Manual 2461 Type C
A-28
(8)
Shock
IEC 68-2-29
(9)
MTBF
62,000 hours for a 2461 Type Ce (TCXO
oscillator) Card
40,000 hours for a module with one 2461 Type Ce
Card
(10)
MTTR
30 minutes (based on card replacement)
(11)
Cooling Requirements (10
o
C temp. rise)
Min. Flow Rate:
4l/s
∆
P 0.14mmH
2
O
Options
TCXO Frequency Reference
A temperature compensated frequency standard.
(1)
Frequency:
10MHz
(2)
Adjustment Range:
Front panel electrical trim
±
5
×
10
-6
minimum
(3)
Aging:
±
1
×
10
-6
max. per year
(4)
Temperature Stability:
±
1
×
10
-6
maximum
with respect to the frequency at 25
°
C, over the op.
range of the module.
Ovenized Oscillator
A temperature controlled frequency standard with higher stability than the TCXO.
(1)
Frequency:
10MHz
(2)
Adjustment Range:
Front Panel electrical:
±
2
×
10
-6
minimum
Internal mechanical:
±
2
×
10
-6
minimum
(3) Aging:
±
1x10
-9
per day at shipment
±
1
×
10
-7
per year.
(4)
Warm-up:
±
1X10
-6
within 45 seconds
±
1X10
-7
within 3 minutes.
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