Racal Instruments 2461 User Manual page 187

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