Brandywine RFS-700D User manual

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P/N!900000181!REV!A!
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User%Manual!
RFS-700D!
Rubidium'Frequency'Standard!
DIN$Rail$Package!
P/N!001-0509!
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900000181!REV.!A!
April!2020!
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PREPARED!BY!
BRANDYWINE!COMMUNICATIONS!
1153!Warner!Avenue!
Tustin!CA.!92780!
CAGE!03NF8!
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P/N!900000181!REV!A!
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Revision(History!
REVISION
DATE
COMMENTS
ECO NUMBER
A
04/13/2020
INITIAL RELEASE
ECO11275
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Safety Warnings
WARNING:
The lightning flash with an arrowhead inside of an equilateral triangle is
intended to alert the user to the presence of un-insulated “dangerous voltage”
within the product’s enclosure. The “dangerous voltage” may be of sufficient
magnitude to constitute a risk of electrical shock to people.
CAUTION:
Observe all necessary precautions for handling electrostatic
discharge sensitive devices when handing component
modules. Improper handling will damage internal circuitry.

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Table of Contents
1!INTRODUCTION!...............................................................................................................................!5!
1.1!BASIC!CONCEPT!..............................................................................................................................................!5!
1.2!SYSTEM!OVERVIEW!.......................................................................................................................................!6!
1.3!SPECIFICATIONS!.............................................................................................................................................!6!
2!SETUP!..................................................................................................................................................!7!
2.1!INSTALLATION!................................................................................................................................................!7!
3!CONFIGURATION!.............................................................................................................................!8!
4!OPERATION!.......................................................................................................................................!9!
5!MAINTENANCE!..............................................................................................................................!10!
6!TROUBLESHOOTING!...................................................................................................................!11!
6.1!LEDS!.............................................................................................................................................................!11!
6.2!SNMP!...........................................................................................................................................................!11!
6.2.1!SNMPWALK-and-OIDs-.......................................................................................................................-12!
7!SUPPORT!INFORMATION!..........................................................................................................!13!
8!FRONT!PANEL!DRAWING!...........................................................................................................!14!
9!REAR!PANEL!DRAWING!.............................................................................................................!15!
10!PARTS!LISTS!................................................................................................................................!16!
11!MIB!FILE!.......................................................................................................................................!17!
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Table of Figures
Figure!1!-!RFS-700D!..................................................................................................................................!5!
Figure!2!-!RFS-700D!...............................................................................................................................!11!
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Table of Tables
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1Introduction!
1.1 Basic!Concept!
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Figure!1!-!RFS-700D!
Brandywine’s RFS-700D is a miniaturized Rubidium Frequency Reference in a
compact ruggedized package designed for mounting on a DIN rail system. The
RFS-700D is capable of outputting 7x 10MHz frequency reference with low phase
noise.
The!frequency!standard!includes!a!low!phase!noise!oven!controlled!quartz!
oscillator,!which!is!frequency!locked!to!the!rubidium!oscillator.!The!time!constant!of!
this!loop!is!selected!such!that!the!short!term!stability!(and!phase!noise)!of!the!
outputs!are!determined!by!the!OCXO!characteristics,!which!the!long!term!stability!is!
determined!from!the!rubidium!oscillator.!!!
The!frequency!standard!has!internal!temperature!sensors!that!are!used!to!
compensate!the!oscillator,!based!on!a!factory!calibration,!to!improve!the!overall!
accuracy!of!the!system.!!
The unit has been qualified under MIL-STD-810F for operation in demanding
environments.!

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1.2 System!Overview!
The!RFS-700D!receives!power!via!a!24!VDC!power!supply!via!a!DC!terminal!block!
connector,!and!outputs!seven!10MHz!reference!signals!via!50!Ω!SMA!connectors.!!In!
addition,!there!is!an!Ethernet!port!that!is!used!for!remote!management!and!control!
of!the!RFS-700D.!
1.3 Specifications!!
Power!
Input!Voltage!Range:! 18-28!VDC!
Nominal!Input!Voltage:! 24!VDC!
Input!Connector:! Terminal!Block!
Power!consumption:!15!W!
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Output!
Connector!type:!SMA!
No.!of!connectors:! 7!
Output!Frequency:!10!MHz!
Output!impedance:! 50Ω!
Short!term!stability:! 1!E-11!
Aging:! 5!E-11!per!Month!
Phase!Noise!@!100Hz! -138!dBc/Hz!
Phase!Noise!@!1kHz! -151!dBc/Hz!
Phase!Noise!@10kHz! -165!dBc/Hz!
Phase!Noise!@100kHz! -165!dBc/Hz!!
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Environmental!
Operating!temp.:! -40!deg.!C!to!+70!deg.!C!
Storage!temp.:! -40!deg.!C!to!+85!deg.!C!
Humidity:! 95%!Non-condensing!
Operating!Altitude:! 10,000!ft.!ASL!
Non-Operating!Altitude:! 50,000!ft.!ASL!
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Ethernet!
Port!speed:!10/100BaseT!
Protocols!supported:!SNMPv3!
Fault!reporting:!Output!fail!(1-7),!Rb!Lock!Status,!PLL!lock!status,!
Over!current!(OCXO)temp.!
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2Setup!
2.1 Installation!!
Remove!the!RFS-700D!from!the!shipping!carton!and!protective!packaging.!!Mount!
the!RFS-700D!securely!onto!the!DIN!rail.!!Connect!the!unit!for!power!via!the!
terminal!block!connector!on!the!top!of!the!unit.!!Connect!the!10!MHz!outputs!to!the!
rest!of!the!equipment!in!the!cabinet!as!required.!

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3Configuration!
The!RFS-700D!is!configured!via!SNMPv3!over!the!included!Ethernet!port.!!Please!see!
the!attached!MIB!file!for!more!information.!

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4Operation!
The!RFS-700D!requires!no!user!intervention!for!normal!operations.!!For!
Maintenance!tasks,!please!refer!to!Chapter!5,!for!troubleshooting!procedures,!please!
refer!to!Chapter!6.!

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5Maintenance!
The!RFS-700D!requires!no!regular!maintenance!tasks!for!normal!operation.!!Care!
sure!be!taken!on!a!regular!basis!to!clean!the!unit!as!well!as!visually!inspect!it!for!
loose!or!frayed!connections,!as!well!as!making!sure!that!the!power!and!frequency!
output!connectors!are!firmly!connected.!

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6Troubleshooting!!
These!instructions!will!help!in!troubleshooting!the!RFS-700D!(001-0509).!
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Figure!2!-!RFS-700D!
6.1 LEDs!
The!three!LEDs!on!the!case!are!the!most!important!tool!for!troubleshooting.!
They!include!“Output!Status”,!“PLL!Locked”!and!“Rb!Locked”.!
On!startup,!the!Output!Status!LED!will!momentarily!be!Red!until!the!oscillators!are!
stable!at!which!point!it!turns!Green.!
In!normal!operation,!the!LEDs!will!all!be!Green.!
Any!persistent!Red!LEDs!indicates!a!hardware!problem!that!requires!service.!
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6.2 SNMP!
The!check!the!status!of!individual!outputs!(J1-J7)!requires!SNMP!over!the!network!
connection.!
There!are!many!free!GUI!and!command-line!tools!for!windows.!
The!following!example!uses!the!snmpwalk!command-line!tool!from!the!Net-SNMP!
open-source!project.!
http://www.net-snmp.org/!!
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6.2.1 SNMPWALK!and!OIDs!
The!top-level!Object!Identifier!(OID)!for!Brandywine!devices!is!iso.identified-
organization.dod.internet.private.enterprise.brandywine!(1.3.6.1.4.1.18954)!!
The!following!example!shows!the!command!for!walking!the!Brandywine!MIBs!from!
the!top!of!the!tree!and!it’s!output.!
root@beaglebone:~# snmpwalk -v3 -l authPriv -u dinrailUser -a SHA -A
dinrailAuthPassPhrase -x AES -X dinrailPrivPassPhrase 192.168.1.212
1.3.6.1.4.1.18954
SNMPv2-SMI::enterprises.18954.500.1.1.0 = INTEGER: 6034
SNMPv2-SMI::enterprises.18954.500.1.2.0 = STRING: "001-0509"
SNMPv2-SMI::enterprises.18954.500.1.3.0 = STRING: "0AB34A"
SNMPv2-SMI::enterprises.18954.500.1.4.0 = STRING: "925601301"
SNMPv2-SMI::enterprises.18954.500.1.5.0 = STRING: "v1.0"
SNMPv2-SMI::enterprises.18954.502.6034.1.0 = INTEGER: 0
SNMPv2-SMI::enterprises.18954.502.6034.2.0 = INTEGER: 0
SNMPv2-SMI::enterprises.18954.502.6034.3.0 = INTEGER: 0
SNMPv2-SMI::enterprises.18954.502.6034.4.0 = INTEGER: 0
SNMPv2-SMI::enterprises.18954.502.6034.5.0 = INTEGER: 0
SNMPv2-SMI::enterprises.18954.502.6034.6.0 = INTEGER: 0
SNMPv2-SMI::enterprises.18954.502.6034.7.0 = INTEGER: 0
SNMPv2-SMI::enterprises.18954.502.6034.8.0 = INTEGER: 1
SNMPv2-SMI::enterprises.18954.502.6034.9.0 = INTEGER: 1
SNMPv2-SMI::enterprises.18954.502.6034.10.0 = Gauge32: 143
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In!this!example!the!DIN!Rail!is!at!IP!192.168.1.212.!

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7Support!Information!!
All!Brandywine!Communications!products!come!with!a!one-year!warranty.!!
If!the!unit!is!still!exhibiting!problems!not!covered!by!the!above!troubleshooting!
guide,!contact!us!for!technical!support!at![email protected]!or!call!us!
at!714-755-1050.!!
If!it!becomes!necessary!to!return!the!unit!to!the!factory!for!repairs,!call!us!at!714-!
755-1050!extension!113!to!arrange!an!RMA.!!
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8Front!Panel!Drawing!
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9Rear!Panel!Drawing!
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10 Parts!Lists!

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11 MIB!File!
-- DIN Rail MIB.
--
-- Author Date Comment
-- ==================================================================
-- Sonny Bui 12/23/2019 Initial
--
BRANDYWINECOMM-DINRail-MIB DEFINITIONS ::= BEGIN
IMPORTS
brandywineComm,
products FROM BRANDYWINECOMM-COMMON-MIB
enterprises FROM RFC1155-SMI
OBJECT-TYPE FROM RFC-1212
TRAP-TYPE FROM RFC-1215;
DINRail MODULE-IDENTITY
LAST-UPDATED "201912230000Z"
ORGANIZATION "Brandywine Communications Inc"
CONTACT-INFO "[email protected]"
DESCRIPTION "All objects specific to the DINRail project"
-- Revision History
REVISION "201912230000Z"
DESCRIPTION "preliminary"
::= { products 6034 }
Fault1 OBJECT-TYPE
SYNTAX INTEGER { no-fault(0), fault(1) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Output Fail #1"
::= { DINRail 1 }
Fault2 OBJECT-TYPE
SYNTAX INTEGER { no-fault(0), fault(1) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Output Fail #2"
::= { DINRail 2 }
Fault3 OBJECT-TYPE
SYNTAX INTEGER { no-fault(0), fault(1) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Output Fail #3"
::= { DINRail 3 }
Fault4 OBJECT-TYPE
SYNTAX INTEGER { no-fault(0), fault(1) }
MAX-ACCESS read-only

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STATUS current
DESCRIPTION "Output Fail #4"
::= { DINRail 4 }
Fault5 OBJECT-TYPE
SYNTAX INTEGER { no-fault(0), fault(1) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Output Fail #5"
::= { DINRail 5 }
Fault6 OBJECT-TYPE
SYNTAX INTEGER { no-fault(0), fault(1) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Output Fail #6"
::= { DINRail 6 }
Fault7 OBJECT-TYPE
SYNTAX INTEGER { no-fault(0), fault(1) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Output Fail #7"
::= { DINRail 7 }
RbLocked OBJECT-TYPE
SYNTAX INTEGER { no-locked(0), locked(1) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION "Rb Locked 3.3V"
::= { DINRail 8 }
ocxoLocked OBJECT-TYPE
SYNTAX INTEGER { no-locked(0), locked(1) }
MAX-ACCESS read-only
STATUS current
DESCRIPTION "OCXO Locked"
::= { DINRail 9 }
ocxoCurrent OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION "OCXO Current in mA"
::= { DINRail 10 }
END