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PHONE: (434) 295-3101
FAX: (434) 977-1849
Charlottesville, VA USA
www.isotemp.com
OCXO 82-1001
CRYSTAL
OSCILLATOR
SPECIFICATION
This specification defines the operating characteristics of
an ovenized crystal oscillator. Long term stability is
assured through use of premium components.
REV
DESCRIPTION OF REVISION
BY APV
DATE
- BTG TST 03-03-2006
ISOTEMP RESEARCH INC. CODE ID MODEL NO. PAGE OF TOTAL DWG. NO. REV.
CHARLOTTESVILLE, VA.
USA
31785 OCXO 82-1001
1
3 114-1241 -

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Charlottesville, VA USA
www.isotemp.com
OCXO 82-1001
1. OUTPUT (PIN = "R.F. OUTPUT")
1.1. Frequency
1.2. Waveform
1.3. Level
a. "1" level
b. "0" level
1.4. Load
1.5. Duty cycle
1.6. Rise/fall time
16.384 MHz
Rectangular
TTL / HCMOS
> +4.4 V
< +0.4 V
3 TTL
45% to 55% @ +2.5 V
< 6 ns (10% to 90%)
2. FREQUENCY STABILITY
2.1. Ambient
2.2. Aging
a. At time of shipment
b. After indefinite storage
i. Daily
ii. Yearly
iii. 10 years
2.3. Voltage
2.4. Short term
2.5. Warm-up/Retrace
< ±1x10-8, 0°C to +60°C
(referenced to +30°C)
< ±1x10-9/day
< ±1x10-9 after 30 days
< ±1x10-7
< ±4x10-7
< ±5x10-9/±10% change
< 5x10-11/second
root Allan variance
< ±2x10-8 after 0.5 hour
(referenced to turn-off frequency
after specified aging is met, and
following 24 hours off power)
(at constant temperature and voltage)
3. MECHANICAL FREQUENCY ADJUSTMENT
3.1. Range
3.2. Resolution
3.3. Control
> ±3x10-7
< ±2x10-9
Multi-turn trimmer
4. ELECTRICAL FREQUENCY ADJUSTMENT (PIN = "VCO INPUT")
4.1. Range
> ±4.5x10-7
< ±6.5x10-7 (At time of shipment)
(Referenced to nominal frequency)
4.2. Control
-5 to +5 V
4.3. Slope
Negative
4.4. Center
0 ±0.4 V
(Control voltage at which nominal
frequency occurs at time of shipment)
4.5. Linearity
< ±10%
4.6. Input impedance
> 20 k
ISOTEMP RESEARCH INC. CODE ID MODEL NO. PAGE OF TOTAL DWG. NO. REV.
CHARLOTTESVILLE, VA.
USA
31785 OCXO 82-1001
2
3 114-1241 -

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Charlottesville, VA USA
www.isotemp.com
OCXO 82-1001
5. INPUT POWER (PIN = "+VDC")
5.1. Voltage
5.2. Current
5.3. Steady state
+12 V ±10%
< 400 mA @ turn on
< 2 Watts @ +25°C
6. OVEN MONITOR (PIN = "OVEN MONITOR"), an output
6.1. Oven at temperature
> +4.6 V
6.2. Oven not at temperature
< +0.3 V
7. MECHANICAL
7.1. Applicable series
7.2. Model number
7.3. Outline drawing
OCXO 82 series
OCXO 82-1001
125-541
ISOTEMP RESEARCH INC. CODE ID MODEL NO. PAGE OF TOTAL DWG. NO. REV.
CHARLOTTESVILLE, VA.
USA
31785 OCXO 82-1001
3
3 114-1241 -

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2.00
50.80
SQUARE
0.12
3.05
MAX.
(VIEW FROM TOP)
0.41
10.41
TRIM ACCESS
0.68
0.03 0.33 17.27
0.76 8.38
PIN CONNECTIONS
PIN FUNCTION
1 + VDC
2 R. F. OUTPUT
3 0 VOLTS & CASE
4 VCO INPUT
5 OVEN MONITOR
0.20
5.08
MIN.
CL
1.400
35.56
CENT.
12
0.030
0.76
DIA. PIN
(5 PLACES)
METAL STANDOFF
(4 PLACES)
1.400
35.56
CENT.
1.00
25.4
CENT.
35
4
0.700
17.78
1.200
1.65
41.9
30.48
CENT.
(VIEW FROM BOTTOM)
NUMBERS FOR REFERENCE ONLY
(NOT STAMPED ON UNIT)
INCH
mm (REFERENCE ONLY)
Form NO. 120-081E
OSCILLATORS
NAME: OUTLINE DRAWING
(OCXO 82 SERIES)
CODE I.D. NO.
31785
Charlottesville, Virgina USA
SCALE: 1:1
DATE: 04-03-1998
DWN. BY: ZQQ APPR'D. BY: DAG
A REDRAWN mm DIM. added
LET REVISION
DAG TST 08-01-2001
TOLERANCES
UNLESS OTHERWISE SPECIFIED:
ANGES: ±1 DEGREE
FRACTIONS: ±1/32 INCH
DECIMALS: .XX ± .015, .XXX ± .010 INCH
MATERIAL: COLD ROLLED STEEL
FINISH: BRIGHT NICKEL
BY APP DATE MARK: LABEL