Pascall Electronics Limited
Westridge Business Park
Cothey Way
Ryde, Isle of Wight
PO33 1QT UK
Tel +44 (0) 1983 817300
Fax +44 (0) 1983 564708
Email enquiries@pascall.co.uk
www.pascall.co.uk
ELECTRONICS LIMITED
ULTRA LOW NOISE VHF CRYSTAL OSCILLATORS
03/09
Pascall OCXO’s are designed to meet the increasing demand for high
performance reference oscillators. Oven controlled SC-cut crystals are
used to give good temperature stability combined with the lowest
possible phase noise.
The Pascall OCXO series has already established itself as the industry
leader in phase noise performance.
The ‘NEW OCXOF’ Series offers the same very low close-in phase
noise combined with even lower noise floor and higher output power.
Typical applications:
Low noise Frequency Multipliers
Phase noise test systems
High performance synthesisers
Radar & EW
EMRISEEMRISE
ElectronicsElectronics
A subsidiary of EMRISE Electronics
Available with -137dBc/Hz@100Hz offset
-182dBc/Hz Noise floor }guaranteed performance
for a100MHz unit
OCXO series & NEW OCXOF Series
Project9:Layout 1 18/3/09 16:06 Page 1
ELECTRONICS LIMITED
OCXO SERIES - ULTRA LOW NOISE CRYSTAL OSCILLATORS
40 - 140MHz
+/- 6 x 10
0 to +10V, positive slope
-30 to 70ºC: +/- 2 x 10
0.5 x 10 after 30 days
13dBm ±2dB, 50Ω
-20dBc
+12V +/-5%
steady state 2.5W, warm-up 5W (<5 mins)
SMA jack
51.0 x 51.0 x 19.0mm
Reference voltage output - 10.5V nominal (source impedance 10kΩin parallel with 10μF)
Mechanical tuning +/-6 x 10
Supply voltage +15V ±5%
Frequency range
Tuning range
Tune voltage
Temperature stability
Aging/ year
Output power
Harmonics
Phase noise
for 100MHz unit
Supply voltage
Power consumption at 25ºC
RF output connector
Dimensions
Options
-6
-6
-6
-7
Minimum guaranteed
performance
For performance levels at other frequencies, please consult the sales office.
100Hz 1kHz 10kHz offsets
level E
level 1
level 2
level 3
level 4
level 5
-137
-135
-132
-130
-125
-120
-164
-162
-160
-158
-155
-150
-178 dBc/Hz
-176 dBc/Hz
-176 dBc/Hz
-176 dBc/Hz
-175 dBc/Hz
-174 dBc/Hz
Errors and omissions excepted
10Hz
-102
-100
-97
-95
-90
-85
100MHz level E OCXO
Project9:Layout 1 18/3/09 16:06 Page 1
ELECTRONICS LIMITED
NEW OCXOF SERIES - EXTRA LOW NOISE FLOOR CRYSTAL OSCILLATORS
40 - 140MHz
+/- 6 x 10
0 to +10V, positive slope
-30 to 70ºC: +/- 2 x 10
0.5 x 10 after 30 days
18dBm ±2dB, 50Ω
-30dBc
+12V +/-5%
steady state 3.5W, warm-up 6W (<5 mins)
SMA jack
51.0 x 51.0 x 19.0mm
Reference voltage output - 10.5V nominal (source impedance 10kΩin parallel with 10μF)
Mechanical tuning +/-6 x 10
Supply voltage +15V ±5%
Frequency range
Tuning range
Tune voltage
Temperature stability
Aging/ year
Output power
Harmonics
Phase noise
for 100MHz unit
Supply voltage
Power consumption at 25ºC
RF output connector
Dimensions
Options
-6
-6
-6
-7
Minimum guaranteed
performance
For performance levels at other frequencies, please consult the sales office.
100Hz 1kHz 10kHz
level E
level 1
-137
-135
-164
-162
-178
-176
10Hz
-102
-100
100kHz offsets
-182 dBc/Hz
-182 dBc/Hz
Errors and omissions excepted 120MHz OCXOF level E
Project9:Layout 1 18/3/09 16:06 Page 1
ELECTRONICS LIMITED
ULTRA LOW NOISE VHF CRYSTAL OSCILLATORS
Ordering Information
OCXO-A-XXX.X-B-C-D
Supply voltage, 0= 12v and 1=15v
Output frequency to 1 decimal place
Reference voltage output 0 = no 1 = yes
Tuning 0 = electrical 1 = mechanical
To summarise:
a part number depicted as follows: OCXO-1-0975-1-0-0
This shows an OCXO with level 1 performance, 97.5MHz frequency,
with reference voltage output, electrical tuning and 12v operation.
Performance level
Errors and omissions excepted
Outline Drawing
Dimensions and connections are the same for OCXO & OCXOF series
OCXO OCXOF
OCXO-A-XXX.X-B-C-D OCXOF-A-XXX.X-B-C-D
OCXOF-A-XXX.X-B-C-D
Supply voltage, 0= 12v and 1=15v
Output frequency to 1 decimal place
Reference voltage output 0 = no 1 = yes
Tuning 0 = electrical 1 = mechanical
Performance level
Project9:Layout 1 18/3/09 16:07 Page 1
