RUBIDIUM PRODUCTS
RUBIDIUM PRODUCTS
Modules, Instruments and Militarized Components
Modules, Instruments and Militarized Components
Power Conditioning
Aging <5E-11 per month
Output Flexibility
Compact 1U Rack Mount or Bench Top
Wide temperature range 0 C to 50 C
GPS Disiplining Option
Features
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The Datum 8040 Rubidium Frequency
Standard is a high performance 10MHz
frequency standard in a 1U high, 19 inch
rack mount plug and play package. Based
on many years of refinement, the Datum
8040 rubidium physics package is a
design that offers high reliability support-
ed by tens of thousands of fielded units.
The standard instrument offers power
supply selection to meet a variety of
needs. A wide range of available individ-
ual options coupled to the highly stable
rubidium physics package's known per-
formance level permit tailored configura-
tion to address specific application needs.
8040 Rubidium Standard
Rev 4-02
RUBIDIUM PRODUCTS
RUBIDIUM PRODUCTS
Modules, Instruments and Militarized Components
Modules, Instruments and Militarized Components
Specifications subject to change without notice.
Datum
-TT&M
34 Tozer Road
Beverly, MA 01915-5510
Tel: +1-978-927-8220
Fax; +1-978-927-4099
USA Toll Free:
1-800-544-0233
Web:
www.datum.com
E-mail:
ttmsales@datum.com
Specifications
ELECTRICAL SPECIFICATIONS
Output/Frequency/Waveform
10 MHz sine wave
Output Impedance
50
@10 MHz
Output Amplitude
0.5v rms
Phase Noise (SSB)
1 Hz
-75 dBc//Hz
10 Hz
-89 dBc//Hz
100 Hz
-128 dBc//Hz
1000 Hz
-140 dBc//Hz
10 kHz
-147 dBc//Hz
Spurs
Harmonic
2nd
<-51 dBc
Other:
<-65 dBc
Non-Harmonic
1 Hz to 1 kHz
<-89 dBc
1 kHz to 10 kHz
<-97 dBc
10 kHz to 100 kHz
<-100 dBc
>100 kHz to 1 GHz
<-68 dBc
Aging
Monthly (after 1 month): <5E-11/month
10 years
<1E-9
Frequency Accuracy At Shipment
5E-11(25 C)
Frequency Retrace
(after 24 hrs power on @ 25 C
& up to 48 hrs power off)
2.5E-11
Short Term
=1 sec
<2.5E-11
Stability
=10 sec
<8.0E-12
=100 sec
<2.5E-12
Frequency Control
Internal trim range (trimpot)
1.5E-9(0V 1.5E-9)
External trim range (electronic)
1.5E-9(0V to +5V)
Warm-up
(at -20 C)
(at 25 C)
<8.7 min
<5.6 min
<10.2 min
<7.3 min
<12.7 min
<10.6 min
Status Monitor
Analog
VCXO volts, lamp volts
(20 kOhm impedance, filtered)
Digital
LOCK monitor: 5V CMOS load
Lock
>2.5V (TTL high)
Unlock
<0.2V (TTL low)
Connector
9 Pin "D" on rear panel
ENVIRONMENTAL SPECIFICATION
Operating Temperature
0 C to 50 C
Temperature Coefficient
|y(50 C)-y(0 C)|
<3E-10
Storage Temperature
-55 C to +85 C
Altitude
Operating
-200 ft to 40,000 ft.
Non-operating
-200 ft to 70,000 ft.
Magnetic Field Sensitivity,
4E-11/GAUSS
DC (2 Gauss Max)
Power Supply Requirements (85 to 264 VAC)
Warm-up
Quiescent (25 C)
Maximum
60 W
25 W
Typical
45 W
15 W
Dimensions
Height
1.75"
Width
19"
Depth
12"
Weight
<6 lbs
8040 Rubidium Standard
RF Buffer providing 1MHz, 5MHz,
10MHz, 1 Vrms sine
EU1
2 PPS Outputs (synchronizable)
R03
Three 1 MHz Sine Wave Outputs,
high isolation (>100dB)
R41
Three 5 MHz Sine Wave Outputs,
high isolation (>100dB)
R42
Three 10 MHz Sine Wave Outputs,
high isolation (>100dB)
R43
Disciplining module
R46
Three 10.23 MHz Sine Wave Outputs
R53
Options
Option P/N
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