User Guide
Frequency Standard QFS-106
Model QFS-106
P/N 0150060XX
Revision B
August 2005
Brandywine Communications
2230 South Fairview Street
Santa Ana, CA 92704
(714) 755 1050
(714) 755 0175
http://www.brandywinecomm.com
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MANUAL P/N 900000034 REV B
FCC PART 15, CLASS A VERIFICATION
INFORMATION TO THE USE R FO R CLASS A DIGITAL DEVICE
WARNING: This equipment has been tested and
found to comply with the limits for Class A digital
device pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable
protection against harmful interference when the
equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction's manual, may cause
interference to radio communications. Operation of
this equipment in a residential area is likely to cause
interference in which case the u ser will be required to
correct the interference at his own expense.
The user is cautioned that changes and modifications
made to the equipment without approval of the
manufacturer could void the user's authority to operate
this equipment.
DOC. # FCC15AVER-B-7-01 REV. E 01/26/00
Revision History
REVISION DATE COMMENTS
NC 10-26-04 Original release of QFS-106 user guide.
A 12-14-04 Revision of the rear panel and mechanical outline drawings.
B 08-03-05 Revision of Section 3.1.
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MANUAL P/N 900000034 REV B
Table of Contents
1 Overview................................................................................................................................. 5
1.1 Part Number Reference................................................................................................. 5
2 Specifications.......................................................................................................................... 6
2.1 I/O and Environmental (Rear Panel).............................................................................. 6
2.2 Switch and Indicator (Front Panel)................................................................................. 7
3 Unpacking and Installation......................................................................................................8
3.1 Unpacking ...................................................................................................................... 8
3.2 Installation ...................................................................................................................... 8
3.3 Connections ................................................................................................................... 8
4 Operation .............................................................................................................................. 10
4.1 Powering the QFS-106................................................................................................. 10
4.2 Loss of Input Signal...................................................................................................... 10
4.3 Loss of Output Signal................................................................................................... 10
5 Calibration.............................................................................................................................11
6 Diagrams............................................................................................................................... 12
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MANUAL P/N 900000034 REV B
1 Overview
The Brandywine Communications QFS-106 is a high performance reference
frequency standard distribution amplifier. The QFS-106 has two internal
reference oscillator options. The QFS-106 may use either a free running Oven
Controlled Crystal Oscillator (OCXO) or a free running Rubidium Oscillator. Also,
the QFS-106 has various power supply options. The QFS-106 may use either
AC or DC input power supplies. The QFS-106 provides six output channels of a
single reference frequency, typically 10 MHz. The QFS-106 has six individually
buffered low phase noise outputs. When more outputs are required, multiple
QFS-106 units may be daisy-chained to a sing l e reference.
1.1 Part Number Reference
PART NUMBER OSCILLATOR POWER SUPPLY
015006001 OCXO 115/230 VAC
015006002 OCXO 09 – 18 VDC
015006003 OCXO 18 – 36 VDC
015006004 OCXO 36 – 72 VDC
015006011 Rubidium 115/230 VAC
015006012 Rubidium 09 – 18 VDC
015006013 Rubidium 18 – 36 VDC
015006014 Rubidium 36 – 72 VDC
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MANUAL P/N 900000034 REV B
2 Specifications
2.1 I/O and Environmental (Rear Panel)
SPECIFICATION DESCRIPTION
Internal Reference
Oscillator
Reference Input
Reference Output
(Buffered from
Reference Input)
Outputs
Phase Noise at 10
MHz
Environmental
Power
Power Connection
Dimension
Weight Weight Typically 3 lbs
OCXO Stability
OCXO Aging 5 x 10-8 per year
Rubidium Stability
Rubidium Aging 5 x 10
Label J8
Number of Reference Inputs 1 Input
Frequency 10 MHz Standard
Level 1 Vrms into 50 ohm
Connector BNC
Label J7
Number of Reference Outputs 1 Output
Frequency 10 MHz Standard
Level 1 Vrms into 50 ohm
Distortion < 33 dBc
Connector BNC
Label Output 1 (J1), Output 2 (J2),
Number of Frequency Outputs 6 Buffered Outputs
Frequency 10 MHz Standard
Level 1 Vrms into 50 ohm
Distortion < 33 dBc
Connector BNC
1 Hz -90 dBc/Hz
10 Hz -110 dBc/Hz
100 Hz -140 dBc/Hz
1000 Hz -150 dBc/Hz
10000 Hz -157 dBc/Hz
Temperature
Humidity 95% non-condensing
VDC Model 12 VDC and 4A Fuse
VAC Model 115/230 VAC and 250mA
VDC Power Supply
VAC Power Supply 115/230 VAC
VDC Connector DC Connector
VAC Connector AC Connector
Length (Rack Mount & Chassis) 19.00” and 17.00”
Height 1.720”
Width 6.150”
-8
1 x 10
±1 x 10
Output 3 (J3), Output 4 (J4),
Output 5 (J5), and Output 6
(J6)
-30 to +60°C
09 – 18 VDC
18 – 36 VDC
36 – 72 VDC
Pin A -> Positive VDC Connector 2 Pin
Pin B -> Negative
at -30° to -60°C
-10
at 0 to 50°C
-11
per month
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MANUAL P/N 900000034 REV B
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