PM6685 Просмотр технического описания (PDF) - Unspecified
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PM6685 Datasheet PDF : 6 Pages
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Timebase Options
Option model:
PM668-/-1-
Retro-fittable option:
non retrofit.
Time base type:
Standard
Uncertainty due to:
Calibration adjustment tolerance, at + 23˚C ± 3˚C <1x10-6
Ageing:
per 24 hr.
per month
per year
Temperature variation: 0˚C-50˚C,
20˚C-26˚C (typ. values)
Power voltage variation: ± 10%
n.a.
<5x10-7
<5x10-6
<1x10-5
<3x10-6
<1x10-8
Short term stability: τ = 1 s
(Root Allan Variance) τ = 10 s
not specified
(typical values)
τ = 100 s
Power-on stability:
Deviation versus final value after 24hr on time, n.a.
after a warm-up time of:
30 min
Total uncertainty, for operating temperature
0˚C to 50˚C, at 2σ (95%) confidence interval:
1 year after calibration
2 years after calibration
<1.2x10-5
<1.5x10-5
Typical total uncertainty, for operating temperature
20˚C to 26˚C, at 2σ (95%) confidence interval:
1 year after calibration
2 years after calibration
<7x10-6
<1.2x10-5
PM668-/-5-
PM9691/011
OCXO
<2x10-8
<5x10-10
<1x10-8
<7.5x10-8
<5x10-9
<6x10-10
<5x10-10
<5x10-12
<5x10-12
n.a.
<1x10-8
10 min
<1x10-7
<2x10-7
<1x10-7
<2x10-7
PM668-/-6-
PM9692/011
OCXO
<5x10-9
<3x10-10
<3x10-9
<2x10-8
<2.5x10-19
<4x10-10
<5x10-10
<5x10-12
<5x10-12
n.a.
<5x10-9
10 min
<2.5x10-8
<5x10-8
<2.5x10-8
<5x10-8
PM668-/-7-
non retro-fit.
Rubidium
<5x10-11
n.a.
<5x10-11
<2x10-10
<3x10-10
<5x10-11
<1x10-11
<5x10-11
<1.5x10-11
<5x10-12
<4x10-10
10 min
<7x10-10
<9x10-10
<6x10-10
<8x10-10
n.a.
Not discernible, neglectable versus 1°C temperature variation.
After 48 hours of continuous operation, PM9692 typical value 1 x 10-10 / 24h
After 1 month of continuous operation
Typical value. Aging during 10 year <1 x 10-9
Explanation
Calibration Adjustment Tolerance is the maximal tolerated deviation from the true 10MHz frequency after a calibration. When the
reference frequency does not exceed the tolerance limits at the moment of calibration, an adjustment is not needed.
Total uncertainty is the total possible deviation from the true 10MHz value under influence of frequency drift due to ageing and ambient
temperature variations versus the reference temperature. The operating temperature range and the calibration interval are part of this
specification.
General Specifications
Environmental Conditions
Temperature
Operating:
0C to +50C
Storage:
-40°C to +70°C
Humidity:
95% RH, 0°C to 30°C
Altitude Operating:
Up to 4600m (15000 ft)
Non-operating:
Up to 12000m (40000 ft)
Vibration:
3G at 55 Hz per MIL-T-
28800D, Class 3, Style D
Shock:
Half-sine 40G per MIL-T-
28800D, Class 3, Style D.
Bench handling.
Shipping container.
Reliability:
MTBF 30 000 hours
Safety:
IEC 1010 Class 1, CSA 22.2 No.
231, EN61010, CE
EMC:
EN 55011, VDE 0871 Level B,
FCC Part 15J Class A, CE
EN 50082/2
Power Requirements
AC:
DC (PM 9623):
90 to 265V rms, 45 to 440 Hz,
max 30W
Internal battery or external 12
to 24V dc, max 2A
Mechanical Data
Width
Height
Depth
Weight:
210 mm (8.25 in)
86 mm (3.4 in)
395 mm (15.6 in)
Net 3.2 kg (7 lb); shipping
5.5 kg (12 lb)
Additional Specification for PM6685R
(where these differ from the standard model PM6685)
Short-term (Root Allan Variance of reference Oscilator)
See Timebase Options table
Warm-up time (at 25°C)
Unlocked status indicated by LED
Time to lock
Retrace:
approx. 5 min.
< 2.5 x 10-11
Power requirements (at 25°C)
Voltage
90 ... 264 Vrms, 47 ... 440Hz
Power rating
<100W for <4 min., 47W
continuous operating
Dimensions and weight
Width
315 mm (12.4 in)
Weight
Net 5.5 kg (12 lb)
Shipping weight
8.8 kg ( 19 lb)
5
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