Symmetricom 9611B User Manual

9611B Switching and

Distribution Unit

User Guide

CD Number: 098-00341-000

26 January, 2012

i

Notices

Copyright

Copyright © 2012 Symmetricom, Inc.
All rights reserved.

Due to continued product development this information may change without notice. If you
find any errors in the documentation, please report them to us in writing. Symmetricom, Inc.
does not warrant that this document is error-free.

LimitedProductWarranty

Hardware and embedded software – Depending on the product, for a period of one, or two
years from date of shipment by Symmetricom, Symmetricom warrants that all Products shall
be free from defects in design, material, and workmanship; shall conform to and perform in
accordance with Symmetricom's published specifications, if any; shall be free and clear of
any liens and encumbrances; and shall have good and valid title. This warranty will survive
inspection, acceptance, and payment by Buyer. Symmetricom does not warrant that the
operation of such Products will be uninterrupted or error free. This warranty does not cover
failures caused by acts of God, electrical or environmental conditions; abuse, negligence,
accident, loss or damage in transit; or improper site preparation.

This warranty shall be null and void in the event (i) Buyer or any third party attempts repair of
the goods without Symmetricom’s advance written authorization, or (ii) defects are the result
of improper or inadequate maintenance by Buyer or third party; (iii) of damage to said goods
by Buyer or third party-supplied software, interfacing or supplies; (iv) of improper use (includ­ing termination of non-certified third party equipment on Symmetricom’s proprietary inter­faces and operation outside of the product's specifications) by Buyer or third party; or (v) the
goods are shipped to any country other than that originally specified in the Buyer's purchase
order.

Goods not meeting the foregoing warranty will be repaired or replaced, at Symmetricom’s
option, upon return to Symmetricom’s factory freight prepaid; provided, however that Buyer
has first obtained a return materials authorization number ("RMA Number") from Sym­metricom authorizing such return. The RMA Number shall be placed on the exterior pack­aging of all returns. Symmetricom will pay shipping costs to return repaired or replacement
goods to Buyer.

Symmetricom reserves the right to disallow a warranty claim following an inspection of
returned product. When a warranty claim is questioned or disallowed, Symmetricom will con­tact Buyer by telephone or in writing to resolve the problem.

iii

LimitationofLiability

The remedies provided herein are the Buyer’s sole and exclusive remedies. In no event or cir­cumstances will Symmetricom be liable to Buyer for indirect, special, incidental or con­sequential damages, including without limitation, loss of revenues or profits, business
interruption costs, loss of data or software restoration, or damages relating to Buyer’s pro­curement of substitute products or services. Except for liability for personal injury or property
damage arising from Symmetricom’s negligence or willful misconduct, in no event will Sym­metricom’s total cumulative liability in connection with any order hereunder or Sym­metricom’s Goods, from all causes of action of any kind, including tort, contract, negligence,
strict liability and breach of warranty, exceed the total amount paid by Buyer hereunder.
SOME JURISDICTIONS DO NOT ALLOW CERTAIN LIMITATIONS OR EXCLUSIONS
OF LIABILITY, SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO
ALL BUYERS.

ContactInformation

Symmetricom, Inc.
Government and Enterprise Business Unit
3750 Westwind Blvd.
Santa Rosa, CA 95403
Main: [phone]

For Sales, Technical Support, and Return Materials Authorization, please See
"Symmetricom Customer Assistance" on page v

RevisionHistory

Revision Date Description

A January 2012 First release.

iv

Symmetricom Customer Assistance

To find the Symmetricom representative closest to your location, please visit Symmetricom World­wide Sales http://www.symmetricom.com/ online.

To reach a Symmetricom Customer Assistance Center, call one of the following numbers:

n Worldwide Main Number: 1-408-428-7907
n US Toll-free Number: 1-888-367-7966 (1-888-FOR-SYMM)
n Europe, Middle East & Africa: 49 700 32886435

9611B_UserGuide_RevA.pdf.......................................................................... Page v

Table of Contents

Notices iii

Copyright iii
Limited Product Warranty iii
Limitation of Liability iv
Contact Information iv
Revision History iv

Symmetricom Customer Assistance v

Table of Contents vii

Symbols x
List of Tables xi
List of Illustrations xi

Introduction 1

Installation 3

Installation Instructions 3

Receiving Inspection 3
Rack Mounting Instructions 3
Making Connections 3

Turning System On 4
Default Values 4
Installation Warnings 4

Chassis Grounding Screw 4

VAC Power Supply Input Connector 5

Dangerous Voltages 5

Switching AC Power 5

Electrical Installations in Norway and Sweden 5

Basic Operation and Features 7

Basic Operation 7

Mode of Switching 7

Simplified Block Diagram 8
Basic Features 10

Front Panel 10

Rear Panel 11

vii

Two Analog / Digital Inputs 12
Twelve Analog / Digital Outputs 12
Auto-Switching Capability 12

Armed LED condition 12
LEDdisplay after Primary signal failure 14

Fault Detection 16
Timecode Switching and Distribution Capability 16
1PPS Through 10MPPS Switching and Distribution Capability 16
RF Switching and Distribution Capability 16
Serial Remote Management 16
Two Alarm Inputs 16
One Alarm Output Via Relay Contact Closure 17
Field Upgrade 17
Field Jumper Configuration 17

User Interfaces 21

Front Panel Controls and Indicators 21

Summary of Front Panel LED conditions 22
Summary of Front Panel Pushbutton Actions 22

Command Line Interface 23

Examples 24

Tasks 25

How to Get or Set the Input Impedance 25
How to Get or Set the Input Comparator Duration 26
How to Configure Fault Inputs 27
How to Display Current Configuration 27
How to Get or Set the Input Comparator Voltage 28
How Display the System Version Information 28
How to Display/Clear (Latched) Faults 28
How to Control Input Switching 28
How to Get or Set the System Clock 29
How to Get, Set or Clear the System Password 29
How to Enter Factory/Test Mode 30
How to Reboot the DSP Software 30
How to Logout 31
How to View the Help Menu 31
How to View the Help on a Specific Command 32
How to Set Up the 9611B for Operation 33
How to Upgrade Software 33

9611B Bootloader CLI 34
How to Upgrade FPGA Program Image 34
How to Upgrade DSP Program Image 35

DSPUpgrade Procedure 35
If the upgrade fails: 35

viii

Specifications 37

Standards 37

CE 37
UL 37
FCC 37

Electrical Signals 37

Signal Inputs 37

RF 37
Pulse/DC IRIG time code 37
AM IRIG timecode 38

Outputs 38

RF 38
Additive Phase Noise 38
Pulse/DC IRIG 38
AM IRIG Timecode 39
Alarm Input 39

Status 40

EMC 40
FCC Certification 40
Restriction of Hazardous Substances (RoHS) 41
Environmental Specifications 41

Ordinary protection: 41

Pollution Degree 41

Installation (Over-Voltage) 41
Mechanical 42

Chassis 42

Front Panel 42

Rear Panel 42

Dimensions 43
Power Supply 43

Index 44

ix

Symbols

Symbol Description

This symbol means the following information
is a note that gives you important infor­mation you use the 9611B.

Caution - Refer to manual. Read all instruc­tions in manual before using this product

CEmarking, attesting compliance to appli­cable European Directives

Caution - risk of electrical shock

Mains Power is ON

Mains Power is OFF

Earth terminal symbol: Used to indicate an
earth ground connection to chassis.

Chassis ground

x

List of Tables

Table 1: LED Function 10
Table 2: Front Panel Pushbuttons 11
Table 3: Table of Rear Connectors 11
Table 4: Auto-Switch Behavior 14
Table 5: Serial Port Parameters 23

List of Illustrations

Figure 1: A Typical Application 1
Figure 2: Front Panel 10
Figure 3: Rear Panel 11
Figure 4: Field Jumper Configuration 18
Figure 5: Lowest gain 18
Figure 6: Medium gain 19
Figure 7: Highest gain 19

xi

Introduction

Symmetricom’s® 9611B-01 Switch & Distribution Unit is an intelligent switching, monitoring and dis­tribution system, packaged in a 1U rack mount chassis.
The unit includes a dual input A-B switch that provides redundant capability. The internal micro­processor can be set up to switch on a number of criteria (i.e., input signal voltage level and period
between detected pulses).

The following figure shows a typical application of the 9611B. Output signals from two XLi instru­ments are connected to respective A and B inputs of the 9611B instruments for distribution. One sig­nal is designated as the primary signal and the other as the secondary signal. If the 9611B is in auto
mode, and the primary signal to the 9611B fails, the auto-switch logic recognizes the failure, and
switches to the secondary signal. The secondary signal is now connected to all twelve outputs.

To determine a failure condition, an adjustable threshold voltage or signal timing duration is provided
to the 9611B auto-switching logic. This threshold voltage or signal timing duration is compared with
the selected input signal to the 9611B. When the comparison triggers a fault condition, an alarm is
triggered. The alarm is latched so as not to lose track of it. The alarm will stay latched until the fault
condition has been removed, and the alarm reset has been activated.

As an alternative to the auto-switching mode, either input can be manually connected to the twelve
outputs.

Figure 1: A Typical Application

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Installation

This section provides installation instructions for the 9611B Switching and Distribution Unit.
Please review the installation warnings section that follows below.

Installation Instructions

ReceivingInspection

Upon receiving the 9611B, make a thorough inspection of the instrument and its accessories. Any
damage or loss of equipment should be reported immediately to the responsible carrier. If no dam­age is found, installation can begin.

Rack Mounting Instructions

This unit is designed for mounting in a standard 19-inch (48.26 cm) rack.
Follow the rack manufacturer's instructions for mounting this unit while observing the following guide­lines:

l Elevated Operating Temperature: If the unit is installed in a closed or multi-unit rack assembly,

the ambient temperature of the rack environment may be greater than the unit's Maximum
Operating Temperature of 50°C/122°F. Install the unit in an environment that is compatible
with the unit's operating temperature range, which is 0 °C to 50 °C, or 32 °F to 122 °F.

l Mechanical Loading: Mount the equipment so as to avoid uneven mechanical loading that

could cause hazardous conditions.

l Circuit Overloading: Observe the power ratings on the unit's nameplate and the additional load

the unit may place on the supply circuit. Overloading the supply circuit may adversely affect the
supply wiring and over-current protection.

l Reliable Earthing: Maintain reliable earthing (grounding) of rack mounted equipment. Pay par-

ticular attention to supply connections other than direct connections to the branch circuit (e.g.,
use of power strips).

MakingConnections

Where appropriate, connect the following cables to the 9611B

l Inputs A and B
l Outputs 1 through 12
l Alarm inputs A and B
l Alarm Output
l AC power (Don't connect to the AC until turning on the instrument)

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Installation

Connect a RS232 serial command line interface cable from the 9611B to the PC serial port, (this is a
straight cable, not a null modem cable).

TurningSystemOn

The 9611B can be operated directly with the default settings that it comes with from the factory. The
factory default values have been set to distribute the most common suite of signals. A list of the fac­tory default values follows this section. When using the 9611B in this mode, simply connect AC power
after making the connections listed in the previous section. After the 9611B is powered up, press the
ALARM button to clear any alarms.

To change the factory default values, and to take full advantage of the flexibility of the 9611B, a com­munications program such as Hyperterm is needed to communicate to the 9611B, via the RS232
serial port. The following procedure assumes the desire to run the 9611B with the provision to change
the factory default values.

Note: When using XMODEM in Hyperterm, for best results, use the version of XMODEM that uses
128 byte blocks.

1. On the PC, run the serial port communication program (see the Command Line Interface section
that follows).

2. Apply AC power (-01 option).

3. On the 9611B front panel, press the ALARM button to clear any alarms.

4. Follow the "How to SetUp the 9611B for Operation" instructions.

Default Values

Impedance = 50 ohms
Frequency = 1, 1 Hz to <10 Hz
Fault A: input = enabled, level low
Fault B: input = enabled, level low
voltage: 0.25 Volts is set
switch: Input A is selected
Gain setting jumper = position B for high gain

Installation Warnings

Please review the following warnings before proceeding with the installation of the 9611B.

ChassisGroundingScrew

The chassis grounding screw provides a secure contact for grounding the unit to a reliable earth
ground.

Page 4 ..........................................................................9611B_UserGuide_RevA.pdf

Warning: Chassis Grounding Screw
Symmetricom recommends that the user connect the chassis grounding screw to a reliable earth
ground.
Avertissement: Châssis fondant la vis
Symmetricom recommande que le châssis soit relié à une terre fiable.

VACPowerSupplyInputConnector

Connector: IEC 60320

Caution: VAC Power
The unit should only be plugged into a grounded receptacle.

Attention : VCA de puissance
L'unité devrait seulement être branchée à un réceptacle fondé.

DangerousVoltages

Warning: Dangerous voltages are present which can cause electric shock that could result in severe
injury or even death. Disconnect all power before servicing this unit.

Avertissement: Les tensions dangereuses sont le présent qui peut causer la décharge électrique
qui pourrait avoir comme conséquence des dommages ou même la mort graves. Déconnectez toute
la puissance avant d'entretenir cette unité.

SwitchingACPower

Warning: Ensure that a disconnect device, such as a switch, with the appropriate voltage/current rat­ing is provided when operating/installing the unit.

Avertissement: Assurez-vous qu'un dispositif de débranchement, tel qu'un commutateur, avec la
tension appropriée/estimation courante est fourni en fonctionnant/installant l'unité.

ElectricalInstallationsinNorway andSweden

Electrical Installations in Norway and Sweden

For Equipment connected to the protective earthing of the building installation through the mains con­nection or through other equipment with a connection to protective earthing - and to a cable dis­tribution system using coaxial cable, may in some circumstances create a fire hazard. Connection to
a cable distribution system has therefore to be provided through a device providing electrical isolation
below a certain frequency range (galvanic isolator, see EN60728-11).
Note: In Norway, due to regulation for installations of cable distribution systems, and in Sweden, a
galvanic isolator shall provide electrical insulation below 5 MHz. The insulation shall withstand a
dielectric strength of 1.5 kV r.m.s. 50 Hz or 60 Hz for 1 minute.

För Elektriska Installationer I Norge Och Sverige

Utrustning som är ansluten till skyddande jordning av bygginstallationer genom nätuttaget samband
eller genom annan utrustning med en anslutning till skyddande jordning-och en kabel dis­tributionssystemet använder koaxialkabel, kan i vissa fall framkalla brandfara. Anslutning till en kabel
distributionssystemet har därför tillhandahållas genom en anordning som elektrisk isolering under en
viss frekvensområdet (galvaniskt isolator, se EN60728-11).

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Installation

Anmärkning: i Norge, till följd av förordningen för installationer av kabel distributionssystem, och i Sve­rige, en galvaniskt isolator skall ge elektrisk isolering under 5 MHz. isolering skall tåla ett dielektriskt
av 1,5 kV r.m.s. 50 Hz eller 60 Hz för 1 minut.

Page 6 ..........................................................................9611B_UserGuide_RevA.pdf

Basic Operation and Features

Basic Operation

The 9611B is a switched distribution unit designed to distribute RF Sine wave or either AM or digitally
modulated time codes from either one of two inputs to all twelve outputs. A typical application of the
9611B would be where a primary signal is being distributed with a secondary signal connected as a
backup in case of failure with the primary source.
The 9611B has two user interfaces: See "Front Panel Controls and Indicators " on page 21, and See
"Command Line Interface" on page 23

ModeofSwitching

The 9611B provides for both manual and auto switching.

l Manual: In manual switching mode, selecting Input A or Input B will connect that input directly

to the twelve outputs. Input A or Input B can be selected manually by pressing the cor­responding front panel input button, or by sending the appropriate command on the serial port
command line interface.

l Auto:To use auto-switching mode successfully, it is first necessary to set up the conditions of

comparison. The conditions of comparison are set up over the command line interface. The
9611B allows for a voltage level, and a signal time duration comparison to be made with the
selected input signal. Once the conditions of comparison are set up, the selected input can be
"Armed". This can be done manually by pressing "Auto" button on the front panel, or by send­ing the appropriate command over the command line interface. The command is that either
input signal A or signal B is to be armed.

Arming an input means that:

l It is the primary input connected to the twelve outputs.
l It is the input being monitored in auto-switching mode, and being compared to conditions of

comparison previously set up. If the armed input fails the comparison conditions, the auto­switching logic switches from the Primary to the Secondary source. The alarm condition will
be indicated by both the front panel and command line interfaces.

9611B_UserGuide_RevA.pdf.......................................................................... Page 7

Basic Operation and Features

SimplifiedBlockDiagram

In the simplified block diagram, the 9611B has:

l 2 selectable signal inputs (A and B)
l 2 Alarm inputs (A and B)
l 12 outputs (1-12)
l Alarm relay output
l Serial RS232 port command line interface (CLI)

In addition, to the inputs and outputs, there are two other front panel switches:

l Auto switch for arming the A/B signal input switch.
l Alarm switch for resetting the latched alarms.

The heart of the 9611B is the auto-switch logic. This logic monitors the conditions above, including the
command line interface. Depending on the conditions, the auto-switch logic switches the A/B signal
input accordingly, and drives the CLI and front panel LEDs.

Page 8 ..........................................................................9611B_UserGuide_RevA.pdf

Only one signal input A or B can be connected to all 12 outputs at any time. The front panel LEDs and
CLI show which of the two signal inputs are connected to the outputs.

As there are many inputs, fault lines, and auto-switch changeover conditions, the auto-switch logic is
rather complex. To learn more about the operations and features of the 9611B, see the following:

l CLI to interact with the 9611B auto-switch logic
l Operations and features
l Simple task examples

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Basic Operation and Features

Basic Features

This section shows the layout of the front and rear panel controls and the basic features integrated in
the 9611B instrument.

FrontPanel

Figure 2: Front Panel

Table 1: LED Function

* See Autoswitch Interface section for a full description of autoswitch indicators and functions

LED
label

Green
(solid)

Green
(slow
flash)

Red
(solid)

Red
(slow
flash)

Red
(fast
flash)

Amber
(solid)

Amber
(slow
flash)

Off

Power

Input A Input A

AUTO

Input B Input B

Power
Available

signal
detected,
Input B
selected.

signal
detected,
Input A
selected.

n/a n/a n/a n/a n/a

Input A
signal
detected,
Input A
selected.

Autoswitch
Input A, or
Input B
ARMED

Input B
signal
detected,
Input B
selected.

Input A
signal
not
detected

Fault
detected

Input B
signal
not
detected

Input A
signal
not
detected,
but it is
selected.

n/a n/a AUTObutton

Input B
signal
not
detected,
but it is
selected.

n/a Input A is NOT

selected, it
had a fault,
which is now
gone. Press
Input A, or
ALARM to return
Input A to
green.

selected but no
input is ARM­ABLE

n/a Input B is NOT

selected, it
had a fault,
which is now
gone. Press

Power
Unavailable

Input A IS
selected, it
had a fault,
which is now
gone. Press
Input A, or
ALARM to
return Input
A to green.

n/a No input

Input B IS
selected, it
had a fault,
which is now
gone. Press

See 1 below

ARMED at
this time.
If both
inputs are
green, Press
AUTO to arm
the input
that is
flashing
green.

See 1 below

Page 10 ..........................................................................9611B_UserGuide_RevA.pdf

LED
label

ALARM n/a n/a

Output
1-12

Green
(solid)

Signal
detected
on output

Green
(slow
flash)

n/a Fault

Red
(solid)

detected
on out­put.

Red
(slow
flash)

n/a n/a Output had a

Red
(fast
flash)

Fault
identified

Amber
(solid)

Input B, or
ALARM to return
Input B to
green.

n/a n/a See 1 below

fault which is
now gone.Press
ALARM to return
this to green.

Amber
(slow
flash)

Input B, or
ALARM to
return Input
B to green.

Off

See 1 below

Note 1 If the power LED is green and all of the other LEDs are OFF, the 9611B is in the bootloader
mode. Also, see the reset command..

Table 2: Front Panel Pushbuttons

Pushbutton Action Result

Press INPUT A (left button) SelectsINPUT A

Press AUTO (center button) Autoswitch mode*

Press INPUT B (right button) SelectsINPUT B

Press ALARM Unlatches the alarm state, turns off the red alarm LED and toggles the alarm

relay contacts. If an ALARMcontinues to exist, the ALARM is reset after the appro­priate timeout interval.

Press and hold ALARM for 10 seconds Resets product configuration to its factory default settings.

* See Autoswitch Interface section for a full description of autoswitch indicators and functions

RearPanel

Figure 3: Rear Panel

Table 3: Table of Rear Connectors

Connector Name Purpose

Power AC power input 1 IEC 320

Alarm Relay Three terminal relay contacts, NO, COM, and NC for alarm conditions. 1 Screw Terminal

COM Provide for a serialcommand line interface 1 DB-9

# of
connections

Connector
type

9611B_UserGuide_RevA.pdf.......................................................................... Page 11

Basic Operation and Features

Connector Name Purpose

Alarm Input Input for an external source alarm circuit 2 BNC

Signal Input Input for the RF and digitalsignals 2 BNC

Signal Output Output for the RF and digital signals 12 BNC

Ground Chassis ground connection 1 Screw post

# of
connections

Connector
type

TwoAnalog/DigitalInputs

Inputs A and B are rear mounted 50Ω BNC connectors. They terminate the input signal in either 50Ω
or 1kΩ loads. These loads are selectable through the Command Line Interface.

TwelveAnalog/DigitalOutputs

Outputs 1 through 12 are rear mounted 50Ω BNC connectors. They are 50Ω fixed outputs.
These outputs distribute analog and digital signal outputs.

Auto-SwitchingCapability

When in Auto-switching mode, if an external or internal fault is detected, the unit will automatically
switch all outputs from the user selected Primary input to the Secondary input.The unit latches in the
Secondary state with alarms activated until the user clears the alarm condition via either the Front
Panel, or Command Line Interface.Input A or Input B may be selected as the Primary Input by acti­vating the Auto button with the desired input selected.
The Front panel autoswitch LEDs indicates the state of the autoswitch. The three front panel LEDs,
Input A, AUTO, and Input B can be used to view the 9611B autoswitch status.

In general, both Input A and Input B need to have valid signals applied to them for the Autoswitch to
be activated. For example, if Input A is valid and Input B is not valid, if Input A then becomes faulty,
switching to Input B makes no sense.

The proper autoswitch condition is therefore to have two valid inputs. One of the inputs is designated
as the primary. The primary is switched to the twelve outputs. If the Input Bis valid, then the auto­switch can be activated, arming Input A. Arming means that both inputs are valid, and if the primary
signal fails, the secondary signal will be switched to the twelve outputs.

Armed LED condition

The 9611B can be seen to be armed when the Input A, AUTO and Input B front panel LED are green.
Also, the AUTO LEDand one of the two input LEDs should be flashing slowly, and the input LEDthat
is not flashing, is solid green.
In this condition:

l The flashing green LEDis the primary, connected to the twelve outputs.
l The solid green LED is the secondary that will be switched to the output if the primary input

fails.

l The flashing AUTOLED shows that the 9611Bis armed and ready to switch if need be.

Page 12 ..........................................................................9611B_UserGuide_RevA.pdf

When the autoswitch is armed, it behaves according to the following table:

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Basic Operation and Features

Table 4: Auto-Switch Behavior

Autoswitch Behavior

Starting State State Change

Primary
Input Signal

Primary
External
Fault

Secondary
Input Signal

Secondary
External
Fault

Armed

Action

Alarm Comments

Selected and
Detected

Selected and
Detected

Selected and
Detected

Selected and
Detected

Selected and

Not Detected

Disabled or
Not Asserted

(ignore) Not

(ignore) (ignore) Enabled and

Enabled and
Asserted

(ignore) Detected Disabled or

Detected Disabled or

Not Asserted

(ignore) Yes Disarm Yes The primary input signal is detected

Detected

Asserted

Detected Disabled or

Not Asserted

Not Asserted

Yes None No This is the autoswitch's normal,

armed, starting state.

but the secondary's input signal is
not detected. Disarm because auto­switching is no longer possible.

Yes Disarm Yes The primary input signal is detected

but the secondary external fault sig­nal is enabled and asserted. Disarm
because autoswitching is no longer
possible.

Yes Automatically

switch

Yes Automatically

switch

Yes The primary input signal is detected

but the primary external fault is ena­bled and asserted. Perform an auto­switch due to external fault.

Yes The primary input is not detected.

Perform an autoswitch due to signal
fault.

LEDdisplay after Primary signal failure

To help in understanding normal autoswitch operation, here is an example.
In the following table, the initial conditions are that Input Bis the primary signal , Input A is the sec­ondary signal and the autoswitch is armed.

Input B selected and armed

Input A AUTO Input B

Input A is valid
and is the sec­ondary signal.

AUTO is armed. Input B is valid and

selected as the primary
signal.

Input B signal fails

Input A AUTO Input B

Input B has been
switched to the
outputs and is

AUTO is no longer
valid. No signal is
armed.

Input B signal has failed.

Page 14 ..........................................................................9611B_UserGuide_RevA.pdf

shown as selected.

Press the ALARMbutton

Input A AUTO Input B

Input B has been
switched to the
outputs.

AUTO is still no
longer valid as Input
B is still failed.

Input B is failed

This condition will remain until Input B is restored as a valid signal.

Input B is now restored as a valid signal

Input A AUTO Input B

Input B has been
switched to the
outputs.

AUTO is valid when
the valid signal on
Input B is acknowl-

Input B is restored, it
was failed but it is now
valid.

edged.

Press the Input B button to acknowledge the signal on it is valid

Input A AUTO Input B

Input A has been
switched to the
secondary signal.

AUTO is valid. When
the AUTObutton is
pressed.

Input B is valid and
selected.

Press the AUTO button

Input A AUTO Input B

Input A is valid
and is the sec­ondary signal.

AUTO is armed on
Input Bthe primary
signal.

Input B is valid and
selected as the primary
signal.

9611B_UserGuide_RevA.pdf.......................................................................... Page 15

Basic Operation and Features

FaultDetection

The 9611B provides intelligent fault detection for all signals based on user settings that define the
input signals.

Time duration
The frequency command is used to set the duration in which a signal can be anticipated to be present.
If the signal is not present in that time duration, an ALARM is triggered. See "Command Line Inter­face" on page 23

Voltage level
The voltage command is used to set the level at which a signal can be regarded as being present.
See "Command Line Interface" on page 23

Note: It is anticipated that the majority of failure modes will result in a total loss of signal. The signal
will be present or not. Therefore the default 0.25 volt setting is sufficient for the majority of appli­cations. It is recommended therefore to not change the default setting unless the signal failure mode
is something other than a total loss of signal.

External input faults register an alarm condition in the system no later than 250ms after a TTL Logic 0
is present at either external alarm input (Alarm A or Alarm B).

TimecodeSwitchingandDistributionCapability

The 9611B will switch and distribute all digital and RF signals within a bandwidth of 50Hz and 10MHz
and a voltage level of 3Vpp for RF or +5Vp for digital signals.

1PPSThrough10MPPSSwitchingandDistributionCapability

The 9611B is designed and tested to switch and distribute all digital time signals from 1PPS through
10MPPS.

RFSwitchingandDistributionCapability

The 9611B is designed and tested to switch and distribute all RF signals from 100Hz through 10MHz
with less than 200ps of additive Jitter.

SerialRemoteManagement

The 9611B includes a standard RS-232 serial interface on the rear panel using a standard DB-9 type
connector for the Command Line Interface (CLI). See "Command Line Interface" on page 23

TwoAlarm Inputs

Two external alarm inputs (Alarm A and Alarm B) are accessed via the rear panel through 50Ω BNC
connectors.These alarm signals are TTL inputs with a TTL High representing Normal Operation and
a TTL Low representing an Input Fault from Source A or Source B. All external input faults will be log­ically equivalent to the system as an internal input fault.

Page 16 ..........................................................................9611B_UserGuide_RevA.pdf

Note: fault condition on either fault input may be logic high or logic low as is estab­lished by the CLI.

OneAlarm OutputViaRelayContactClosure

The 9611B has one set of relay contacts for an alarm output.This output consists of a 3 terminal
push-in connection on the rear panel, with Normally Closed (NC), Common (COM) and Normally
Open (NO) terminals respectively. Normal operation will be transmitted to the user by continuity
between the NC and COM contacts, and an open circuit between the NO and COM terminals.All
fault conditions will be signified by an open between the NC and COM terminals, and continuity
between the NO and COM terminals.

Warning: the relay contacts are rated 10VDC at 1A. Do not connect high Voltages to
this relay

FieldUpgrade

The 9611B has the capability to upgrade firmware from Symmetricom through the 9611B serial port
(downloaded from the web http://www.symmetricom.com/support/online-support/ on the user’s
PC).

FieldJumperConfiguration

Note: The chassis interior is considered to be a SERVICEACCESSAREA. Only
trained operators should remove the Chassis Cover. Hazardous Voltages may exist
inside the chassis.

A trained operator may change the 9611B input to output gain by changing jumpers that are located
inside the 9611B chassis SERVICEACCESSAREA.
To avoid damage, turn the instrument off when changing the jumper setting.

9611B_UserGuide_RevA.pdf.......................................................................... Page 17

Basic Operation and Features

Figure 4: Field Jumper Configuration

The RF gain can be adjusted with the P2 jumper field settings shown above in its default setting.

On the 9611B printed circuit board is a jumper field header with an associated label. The label shows
positions of A B C D E, with A positioned at the diamond (pin1) on the header.

Figure 5: Lowest gain

(-3dB) is no jumper

Page 18 ..........................................................................9611B_UserGuide_RevA.pdf

Figure 6: Medium gain

(+1.5dB) is position A - this is pin 1

Figure 7: Highest gain

(+2.5dB) is position B - this is pin 2, (the default setting)
Position B is appropriate for use with pulsed signals

Note: the area inside the chassis also includes ESDsensitive components.

9611B_UserGuide_RevA.pdf.......................................................................... Page 19

User Interfaces

The 9611B is controlled via two user interfaces:

l Front panel controls and indicators
l Command line interface (CLI) over a RS232 serial port connection

Front Panel Controls and Indicators

This section describes operation of the manual controls on the front panel of the 9611B Switching
and Distribution Unit.

The power indicator is a green LED that indicates that AC power is applied and turned on.

The two input LEDs A and B are either green, amber or red:

l Green

l Solid indicates that the channel signal is valid and present

l Flashing indicates that the channel signal is valid, present and armed
l Amber shows that a fault was registered but is now corrected
l Red to indicate that the channel signal has failed

The single AUTO LED is either green, amber or red:

l Green

l Solid indicates that an input channel signal is valid for arming

l Flashing indicates that the flashing input channel is armed
l Amber shows that a fault was registered but is now corrected
l Red to indicate that the armed channel signal has failed

The single ALARM is either green or red:

l Green shows that there are no faults registered
l Flashing red shows that a fault has been registered

When any alarm (A, B or 1-12) is set, the Alarm indicator turns from green (normal) to red (alarm).
Once the failure is remedied, the alarm can be deactivated by pressing the Alarm pushbutton, or issu­ing a command over the CLI. If the alarm is cleared, all alarm indicators, return to the normal green
color.

The twelve output LED’s numbered one through twelve are either green, amber or red:

9611B_UserGuide_RevA.pdf.......................................................................... Page 21

User Interfaces

l Green indicates that the output signal is valid and present
l Amber shows that a fault was registered but is now corrected
l Red to indicate that the channel signal has failed

Note: When the unit is powered down in an alarm condition, then re-powered with the

condition fixed, the alarm is still reported. This is normal operation. The unit will

“remember” status at power down and report it when the power is restored.

SummaryofFrontPanelLEDconditions

LED Label

POWER Power available (not used) (not used) Power unavailable

INPUT A INPUT A signal detected

AUTO Auto-switch armed* Auto-switch tripped* Auto- switch is armable* (no

INPUT B INPUT B signal detected

OUTPUT

1-12

ALARM No alarms are detected Alarm conditions

GREEN RED AMBER OFF

INPUT A signal not

and selected*

and selected*

Output signaldetected Output signal not

detected*

INPUT B signal not
detected*

detected

detected

INPUT A signal detected but
not selected*

fault conditions)

INPUT B signal detected but
not selected*

Output signalwas failed but
now restored. Press
ALARMbutton.

(not used) (not used)

(not used)

Auto-switch is not armable due
to fault conditions*

(not used)

(not used)

* See Auto-switch Interface section for a full description of auto-switch indicators and functions

SummaryofFrontPanelPushbuttonActions

Pushbutton Action Result

Press INPUT A (left button) SelectsINPUT A

Press AUTO (center button) Auto-switch mode*

Press INPUT B (right button) Selects INPUT B

Press ALARM If there are no current alarm conditions, unlatches the alarm state, turns off the red

alarm LED and toggles the alarm relay contacts.

Press and hold ALARM for 10 seconds Resets pr oduct configuration to its factory default settings.

* See Auto-switch Interface section for a full description of auto-switch indicators and functions

Page 22 ..........................................................................9611B_UserGuide_RevA.pdf

Command Line Interface

The 9611B instrument has a Command Line Interface that may be accessed through the 9611B
serial port. Communication between the instrument is accomplished by running a communications
program on a PC or similar device. The PC is connected by the PC RS232 serial port to the 9611B
via a straight serial cable (non null modem cable).
Use the following parameter values when configuring the communications program installed on the
PC:

Table 5: Serial Port Parameters

Parameter Value

Baud 115,200

Data 8

Parity None or N

Stop bits 1

Flow control none

Note: After either the power cycle, or RESET, the user must not send any characters to the 9611B
until the 9611B has completed its BOOTsequence. Otherwise, the 9611B will be placed into a mode
where all front panel LEDs are turned OFF and the unit will be in the firmware upgrade mode.

When the serial communications link is established, the following display appears on the PC monitor:
************************************
Welcome to the 9611B local CLI
Press 'h' or '?' for the menu
************************************

Pressing either 'h' or '?' returns the list of commands in the following screen:

9611B_UserGuide_RevA.pdf.......................................................................... Page 23

User Interfaces

In general, commands have the following behavior:

l The CLI will recognize abbreviated versions of the commands that are three characters or

longer. For example "swi" will be recognized as "switch."

l Commands and arguments are case insensitive.
l Commands receiving improper arguments will emit an error message.

Examples

1. To find the current value of impedance
At the prompt, enter impedance
The following is returned: impedance = 50 ohms

2. To find the default and valid values of impedance
At the prompt, enter impedance ?
The following is returned:

impedance [<50|1000>] <CR> // Default: 50 Ohms

This shows that:

l Parameters for impedance can be either 50 ohms, or 1000 ohms, [<50|1000>]
l The default value of impedance is 50 ohms.

3. To change the value of impedance;
Enter impedance 1000
To verify, enter impedance
The following is returned:

impedance = 1000 ohms

Page 24 ..........................................................................9611B_UserGuide_RevA.pdf

Tasks

The following tasks show methods by using the front panel and the command line interfaces. In many
cases the task cannot be performed by the front panel interface, in which case a "Not applicable" des­ignator is given.
See also:

l Front Panel Controls and Indicators
l Command Line Interface

For the command line interface entries below, it is assumed in the following tasks that you are
presently in the command line interface menu.

How to Get or Set the Input Impedance

The choices here are 50 Ω and 1000 Ω.

Front Panel Command Line Interface

Not applicable

9611B_UserGuide_RevA.pdf.......................................................................... Page 25

To set impedance value enter:

impedance [<50|1000>] <CR>

To get impedance value enter:
impedance<CR>

Tasks

How to Get or Set the Input Comparator Duration

Front Panel Command Line Interface

Not applicable

To set frequency value enter:
frequency [<1-15>] <CR> // Input signal frequency, where:
1 = 1, 1 Hz to < 10 Hz
2 = 2, 10 Hz to < 100 Hz
3 = 3, 100 Hz to < 1 kHz
4 = 4, 1 kHz to < 10 kHz
5 = 5, 10 kHz to < 100 kHz
6 = 6, 100 kHz and above
7 = 7, Digital IRIG A
8 = 8, Digital IRIG B
9 = 9, Digital IRIG D
10 = 10, Digital IRIG E
11 = 11, Digital IRIG G
12 = 12, Digital IRIG H
13 = 13, AM IRIG - 100 Hz carrier
14 = 14, AM IRIG - 1 kHz carrier
15 = 15, AM IRIG - 10 kHz carrier

To get frequency value enter:

frequency

Page 26 ..........................................................................9611B_UserGuide_RevA.pdf

How to Configure Fault Inputs

Front Panel Command Line Interface

Not applicable

To set input fault parameters enter:
finput <A|B> <disable|[enable <low|high>]> <CR>

To set a fault input such as Input B to be enabled and high, use this
example
finput B enable high

To get input fault parameters enter:
finput <CR>
Returns for example:
Fault A: input = enabled, level = low
Fault B: input = enabled, level = low

Note:
fault X input=enable, level = high means that a TTL level=high (or
open circuit) on the input indicates a fault

fault X input=enable, level=low means that a TTL level = low on the
input indicates a fault

To view the command syntax
Enter finput ?
Syntax error. Usage:
finput <A|B> <disable|[enable <low|high>]> <CR> // Configure
fault inputs

How to Display Current Configuration

Front Panel Command Line Interface

Not applicable

To display the current configuration, enter:
config <CR>

Returns for example
Impedance = 50 ohms
Frequency = 1, 1 Hz to < 10 Hz
Fault A: input = enabled, level = high
Fault B: input = enabled, level = high

9611B_UserGuide_RevA.pdf.......................................................................... Page 27

Tasks

How to Get or Set the Input Comparator Voltage

Front Panel Command Line Interface

Not applicable

To set voltage value enter:
voltage [<value, 0 - 5V>] <CR>

To get voltage value enter:
voltage <CR>

Example to set the voltage for 1.5 volts:
Enter voltage 1.5 <CR>

Example, to get current voltage setting:
Enter voltage <CR>
Signal detection reference is 1.5 volts

How Display the System Version Information

Front Panel Command Line Interface

Not applicable

This is read only and cannot be changed through the CLI.

To get version value enter:
version <CR>

Example read out:
Micro-controller Firmware:

l Hydra/9611b DSP V01.01.RC4
l Sep 26 2011, 11:07:05

FPGA Firmware:

l Hydra/9611b FPGA 404
l V18.7.RC4
l 02/11/2011

How to Display/Clear (Latched) Faults

Front Panel Command Line Interface

Not applicable to view faults.

Press Alarm button to clear
faults

To view existing faults enter:
faults <CR>

To clear faults enter:
faults [clear] <CR>

How to Control Input Switching

Use this to select Input A, Input B or Automatic selection

Page 28 ..........................................................................9611B_UserGuide_RevA.pdf

Front Panel Command Line Interface

To select Input A
Press Input A button

To select input A enter:
switch [<[A|B]>]<CR> // Set switch position.

To select Input B
Press Input B button

To arm the selected input:
Press the Auto button

To select input B enter:
switch [<[A|B]>] [<auto>] <CR> // Set switch position. and auto
switching. Note: either switch A or switch B have to be designated
when using the auto parameter.

To read which input is selected enter:
switch <CR>

How to Get or Set the System Clock

Front Panel Command Line Interface

Not applicable To set system clock. enter:

time [<dd> <Mmm> <yyyy> <hh:mm:ss>] <CR>

To read the time enter:
time <CR>

Example returned time:
Tue Jan 10 07:59:59 2012

How to Get, Set or Clear the System Password

Front Panel Command Line Interface

To disable the password,
press the ALARM button down
for at least ten seconds.

To set the system password enter:
password <Set|Clear> [<string[a-z|A-Z|0-9]>] <CR>

// set/clear system pwd // System password must be between 1
and 8 characters long.

For example enter:
password set symm

password updated (is read back)

For example enter:
password clear

Password has been cleared. WARNING:
THISSYSTEMISNOWUNSECURE.

9611B_UserGuide_RevA.pdf.......................................................................... Page 29

Tasks

How to Enter Factory/Test Mode

Front Panel Command Line Interface

Not applicable

To enter factory/test enter:
factory <CR>

Note: This is not the same password as set by the user. This com­mand is for the Symmetricom Service department only.

Returned text:
"factory: Enter password or 'q' to quit"

The password is used by the factory to conduct system testing. Con­tact customer assistance to learn more.

How to Reboot the DSP Software

Use this command to reboot the digital signal processor (DSP) and to upgrade system software.

Front Panel Command Line Interface

Not appli­cable

See alsoSee "How to Upgrade Software" on page 33

Reboot the DSP.

reset

[OK 2011-10-05 15:08:00]>>
Booting application in 5 seconds.
Uploading FPGA.
Press any key to halt boot. FPGA upload success.
Press any key to halt boot.
*********************************************************************************

Welcome to the 9611B Local CLI

Press 'h' or '?' for menu.

*******************************************************************************

Page 30 ..........................................................................9611B_UserGuide_RevA.pdf

How to Logout

Front Panel Command Line Interface

Not applicable

To exit the command line interface enter.

logout <CR>

Example response:
Logging out...good bye.

Note: When a password has been set, the re-entry will require the
password.

If a password has not been set, the response back is:
Can't Logout. No password has been set.

How to View the Help Menu

Use this to display the Help menu

Front Panel Command Line Interface

Not appli­cable

To get the help listing, enter h <CR>

Example h <CR> returns:

9611B_UserGuide_RevA.pdf.......................................................................... Page 31

Tasks

How to View the Help on a Specific Command

Front Panel Command Line Interface

Not applicable

To access Help menu enter:
? <CR>

Example password ? <CR> returns:

password <Set|Clear> [<string[a-z|A-Z|0-9]>] <CR>
// set/clear system pwd // System password must be between 1 and
8 characters long

Page 32 ..........................................................................9611B_UserGuide_RevA.pdf

How to Set Up the 9611B for Operation

Use the following procedure containing the individual commands detailed above from the command
line interface:

1. impedance [<50|1000>] (set the value of impedance to either 50Ω or 1000Ω).

2. frequency [<1-15>] (set the value of frequency/time duration between valid signals).

3. voltage [<1-5>] (set the reference threshold for inputs A and B)

4. switch A (select input A ).

5. finput <A> <disable|[enable <low|high>]> (set enable and high/low logic for input A).

6. switch B (select input B ).

7. finput <B> <disable|[enable <low|high>]> (set enable and high/low logic for input B).

8. switch A (select input A ).

9. switch A auto (set input A as armed).

How to Upgrade Software

The 9611B has a single partition into which the FPGAprogram image can be loaded. For the DSP
program image, there is a choice of two partitions into which the image can be loaded, partition A or
partition B.
It is important to realize that the DSP and FPGA images are created as a matched pair. It is therefore
most important to upgrade both the FPGA and DSP images at the same time. The upgraded version
of the FPGA image should be loaded into the single FPGApartition. The “upgfpga” command
installs the FPGA image into the single FPGA partition, overwriting the prior image.

The upgraded version of the DSP image should be loaded into either DSP partition A or DSP par­tition B. An argument to the “upgdsp” command selects whether the DSP image is written to the A
or B partition.
The “setpart” command tells the 9611B which DSP image to use at boot time: A or B.
The idea of the A and B partitions is to provide a place for the last known working DSP image and
another for an upgrade image.

When the 9611B is received, the factory image will be in partition A.
The first upgrade should therefore be loaded into B. The 2nd upgrade into A, and so forth.
The setpart command will also need to be set to the same partition the DSP image was loaded into.

Whenever the DSP starts, it loads its program image into RAM from either flash partition A or B,
depending on the current position of an internal pointer. The system then boots up from the selected
partition.Next, the system loads the FPGA with an image that resides in the single FPGA partition.

When upgrading the firmware, the customer uses the 9611B Boot loader CLI to install new FPGA
and DSP images separately as follows.

9611B_UserGuide_RevA.pdf.......................................................................... Page 33

Tasks

9611B Bootloader CLI

Use the following two procedures to upgrade the DSP and the FPGAprogram images. These oper­ations cannot be achieved using the front panel controls. Use the command line interface for the fol­lowing procedure.

1. In the main user interface, enter reset <CR>

Display shows the following:

" Press any key to halt boot."

2. Press any key, to bring up the following display
*******************************************************************************
** Welcome to the 9611B Bootloader CLI **
** **
** Press 'h' or '?' for menu. **
*******************************************************************************

3. Press the "h" key to bring up the following display:

*******************************************************************************
** Welcome to the 9611B Bootloader CLI **
** **
** Press 'h' or '?' for menu. **
*******************************************************************************

boot - Boot application, (A, B, or active).

setpart - Set the active boot partition (A or B).

getpart - Get the current active boot partition.

reset - Reset/reboot the system.

upgdsp - DSP software upgrade (A or B).

upgfpga - FPGA firmware upgrade.

version - Display bootloader version info.

logout - Exit the CLI.

h - This help, or help on a specific command

? - This help, or help on a specific command

How to Upgrade FPGA Program Image

Loading the FPGAprogram image is straightforward as there is only a single partition in which to load
the program image.

1. In the 9611B Bootloader CLI menu, enter upgfpga <CR>

2. Navigate to the location of the FPGA file and load it.

Page 34 ..........................................................................9611B_UserGuide_RevA.pdf

Note: Xmodem capabilities are required to upgrading both the FPGA and the DSP code. Xmodem is
included in the hyperterm software, but it might not be included in other software.

How to Upgrade DSP Program Image

The flash memory in the 9611B has two partitions for the DSP program image, partitions A and B.
The DSPsoftware can be loaded into whichever partition is selected as active. This means that there
can be two versions of DSP software resident in memory. One example of where this might be use­ful, would be If a newly installed DSP upgrade is found to be faulty, the other partition containing the
original DSP software can be made active, and the original software can then be loaded. It is impor­tant to remember that the DSP and FPGA images are created as a matched pair. It is therefore most
important to upgrade both the FPGA and DSP images at the same time.
Because of this flexibility, the DSPsoftware upgrade procedure is more complex and additional
steps should be taken to avoid errors.

DSPUpgrade Procedure

In the following example, the DSP code for partition B is to be updated.

1. While the pre-upgraded 9611B is running, use the version command to query the CLI for the
version IDs of the DSP and FPGA images.

2. Get the old firmware bundle for that pair from the Web or the CD that came with the 9611B.
Call it version 1. This will be needed for restoration should the upgrade fail.

3. Get the version 2 upgrade bundle.

4. Bring up the 9611B bootloader CLI and use the getpart command to query which partition the
product is currently booting. For this example, we’ll say that version 1 is in partition A.

5. Use upgdsp B command to install the version 2 DSP image into the B partition.The expected
file name will be in the form "9611b_DSP_A_verX.img."

6. Use the upgfpga command Install the version 2 FPGA image.

7. Use setpart B to change the position of the pointer to the B partition.

8. Reboot the unit and check for normal operation.

If the upgrade fails:

1. Bring up the 9611B bootloader CLI.

2. Use the upgfpga command to install the version 1 FPGA image.

3. Use setpart A to change the position of the pointer back to the A partition.

4. Reboot the unit and check for normal operation.

Note : Xmodem capabilities are required to upgrading both the FPGA and the DSP code. Xmodem
is included in the hyperterm software, but it might not be included in other software.

Warning: The DSPcode will be erased immediately after the enter key is pressed. There is no
escape sequence once the upgrading process is started. If the partition becomes corrupt, the 9611B
will hang trying to boot, press any key to enter the bootloader and program the partition.

9611B_UserGuide_RevA.pdf.......................................................................... Page 35

Specifications

Standards

CE

Emissions EN 55022

Immunity EN 55024

Safety EN 60950-1

UL

UL60950-1

FCC

Part 15 Subpart B, Class A

Electrical Signals

SignalInputs

Connector (2): 50ΩBNC Female

RF

Frequency 100Hz - 10MHz

Level 0 to 1Vrms (Do not exceed 15dBM)

Impedance 50Ω or 1kΩ

Isolation A to B >85dB

Pulse/DC IRIG time code

Frequency 1PPS to 10MPPS

Level 0-6VP-P

DutyCycle 0 to 100%

Impedance 50Ω or 1kΩ

9611B_UserGuide_RevA.pdf.......................................................................... Page 37

Specifications

AM IRIG timecode

Frequency 1PPS to 10MPPS

Level 0-6Vp-p

Modulation Frequency Up to 1MHz

Code Format Any IRIG Format, IEEE 1344, NASA 36, 2137, XR3

Impedance 50Ω or 1kΩ

Outputs

Connector (12): 50ΩBNC Female

RF

Frequency 100Hz to 10MHz

Level 1V rms (15dBM max)

Gain Jumper selectable -3dB, +1.5dB, + 2.5dB

Harmonic <-40dBc

Non-Harmonic <-80dBc

Load Impedance 50Ω

Isolation >80dB

Additive Phase Noise

Measured at 10 MHz, +10 dBM input level

1Hz -125dBc

10Hz -135dBc

100Hz -135dBc

1kHz -145dBc

10kHz -155dBC

Pulse/DC IRIG

Frequency 1PPS - 10MPPS

Level 5V peak

Rise Time <20ns

Fall Time <20ns

Jitter <200ps rms

Skew <+/-2ns output to output

Load impedance 50Ω

Page 38 ..........................................................................9611B_UserGuide_RevA.pdf

AM IRIG Timecode

Frequency 1PPS to 10MPPS

Level 0-6Vp-p

Modulation Frequency Up to 1MHz

Code Format Any IRIG Format, IEEE 1344, NASA 36, 2137, XR3

Load Impedance 50Ω

Alarm Input

Normal State 2.2 to 5.0 V (TTL High) Configured via CLI.

Can be High or Low

Alarm State <0.8 V (TTL Low)

Connectors BNC

Qty 2 (1 for A input & 1 for B input)

Enable/Disable Confgiured via CLI. Default is disabled

9611B_UserGuide_RevA.pdf.......................................................................... Page 39

Status

Status

l Senses signal presence on all inputs and outputs
l Green/Red LEDs on front panel
l Relay contact close on rear panel
l RS-232 interface for monitor and control

EMC

The system has been tested and passed the following Electromagnetic Compatibility Standards that
are required for CEMark.

Radiated Emissions, 30 MHz – 1 GHz EN55022, Class A

Conducted Emissions, 150 kHz – 30 MHz EN55022, Class A

Immunity Characteristics EN55024, Class A

Electrostatic Discharge EN61000-4-2

Radiated RF Immunity EN61000-4-3

Electrical Fast Transient / Burst EN61000-4-4

Surge Immunity EN61000-4-5

Conducted RF Immunity EN61000-4-6

Power Frequency H-Field Immunity EN61000-4-8

Voltage Dips and Interruptions EN61000-4-11

AC Harmonic Emissions EN61000-3-2

AC Short and Long Term Flicker EN61000-3-3

FCC Certification

The system has been tested and passed the following FCC Part 15 emissions requirements for Class
A performance.

Radiated Emissions 30 MHz – 1 GHz

Conducted Emissions 150 kHz – 30 MHz

FCC Class A Radiated and Conducted Emissions (see following notes).

Note: This equipment has been tested and found to comply with the limits for a 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

Page 40 ..........................................................................9611B_UserGuide_RevA.pdf

radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Oper­ation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own expense.
Modifications not expressly approved by the manufacturer could void the user's
authority to operate the equipment under FCC rules.

Restriction of Hazardous Substances (RoHS)

2002/95/EEC Restriction of Hazardous Substances in Electrical and Electronic Equipment
Contains lead in solder per Annex exemption 7 for telecommunications infrastructure equipment.

Environmental Specifications

Operating Temperature 0 C to +50 C

Storage Temperature -40 C to +70 C

Humidity

Operating 10% to 90% non-condensing

Non-operating 5% to 95%

Altitude

Operating 0 to 5,000 feet

Ordinaryprotection:

This unit is for indoor use only. It is not sealed to prevent moisture from entering the enclosure.

PollutionDegree

2 per EN60950-1

Installation(Over-Voltage)

Category II for transient over-voltages per EN 60950-1

9611B_UserGuide_RevA.pdf.......................................................................... Page 41

Status

Mechanical

Chassis

l 1U, 19 inch rack mount

Note: Use four (4) 10--32 machine screws to secure front mounting flanges to rack.

FrontPanel

l 1 each, power LED labeled POWER (Green)
l 3 each, autoswitch LED, labeled INPUT A, AUTO and INPUT B (Tri-color: Green, Red,

Amber)

l 12 each, output signal LEDs, labeled 1 through 12 (Tri-color: Green, Red, Amber)
l 1 each, alarm LED, labeled ALARM (Red)
l 3 each, momentary-contact autoswitch pushbuttons, 1 ea. under the INPUT A, AUTO and

INPUT B LEDs

l 1 each, momentary-contact alarm-clearing pushbutton under the ALARM LED

RearPanel

l Rear Panel
l 2 each, input signal BNC connectors, labeled INPUT A and INPUT B
l 2 each, TTL alarm input BNC connectors, labeled ALARM A and ALARM B
l 1 each, AC power connector
l 1 each, earth ground screwterminal
l 1 each,. Female DB9 Standard Serial CLI Port, labeled COM

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l 1 each, 3-pin Form C alarm connector, labeled N. O., COMMON and N. C., and collectively

labeled ALARM (push-in terminals). Note: the terminals' labels should match the position of
the contacts when the relay is in its energized (no alarm) state.

Dimensions

l Height: 1.725”
l Width: 16.98”
l Depth: 15.0"
l Weight 7lbs

Power Supply

The AC power supply has been selected so that no fans are required for continuous operation in the
specified temperature range.

AC Power Supply
Power requirements: 100 - 240V, 50/60 Hz, 20W

9611B_UserGuide_RevA.pdf.......................................................................... Page 43

Index

Index

1

1PPS - 10MPPS 16

A

AM IRIG timecode Specs 38
Analog / digital inputs 12
Analog / digital outputs 12
Auto-switching capability 12

B

Basic Features\ 10
Basic Operation 7
Basic Operation and Features 7

C

Chassis 42
Command Line Interface 23
Configure Fault Inputs 27
Contact Information iv
Copyright iii

D

Dimensions 43
Display Current Configuration 27
Display Faults 28

E

Electrical Signals 37
EMC 40
Environmental Specifications 41

F

Factory/Test Mode 30
Fault Detection 16
Front Panel 10, 42
Front Panel Controls and Indicators 21

I

Input Comparator Duration 26

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Input Comparator Voltage 28
Input Impedance 25
Input Switching 28
Inputs 37
Installation 3
Installation Procedure 3
Installation Warnings 4
Introduction 1

L

Limitation of Liability iv
Limited Product Warranty iii
Logout 31

M

Making Connections 3
Mechanical 42
Mode of Switching 7

O

Output Specs 38
Output via relay contact 17

P

Power Supply 43
Pulse/DC IRIG time code Specs 37

R

Rack Mounting Instructions 3
Rear panel 42
Rear Panel 11
Reboot the DSP Software 30
Receiving Inspection 3
Restriction of Hazardous Substances (ROHS) 41
RF Specs 37
RF switching and distribution capability 16

S

Serial Remote management 16
Set Up the 9611B for Operation 33
Simplified Block Diagram 8
Specifications 37
Standards 37
Status 40
Symbols x

9611B_UserGuide_RevA.pdf.......................................................................... Page 45

Index

Symmetricom Customer Assistance v
System Clock 29
System Password 29
System Version 28

T

Tasks 25
Timecode switching and distribution 16
Turning System On 4
Two alarm inputs 16

U

Upgrade DSP Software 35
Upgrade FPGA firmware 34
Upgrade Software 33
User Interfaces 21

V

View the Help Menu 31

Page 46 ..........................................................................9611B_UserGuide_RevA.pdf