Precise Time and Frequency ptf 1226 Operation And Maintenance Manual

ptf

Precise Time and Frequency, Inc

ptf 1226 Auto Switch

Operation and Maintenance Manual

Document # 11323
Revision A

Certificate of Conformance

This certificate confirms that the following equipment:

Unit type: ptf 1226 Auto Switch

Serial Number: __________________________

has successfully passed a FINAL ACCEPTANCE TEST and conforms
in all respects of form, fit, and function to current specifications, including
regulatory requirements and certifications.

Inspected and verified by: Date:

_____________________ _____________________

For Precise Time and Frequency, Inc

Declaration of Conformity

This certificate confirms that the following equipment:
Unit type: ptf 1226 Auto Switch with Distribution
is in conformity with the relevant provisions of the following standard(s)
or other normative document(s):

EU EMC Directive 89/336/EEC:
EN55022 Limits and methods of measurements of radio disturbance
characteristics of information technology equipment

EN61000-3-2 (2001) Limits for harmonic current emissions (equipment

input current up to and including 16A per phase)

EN61000-3-3 (1995) Limitation of voltage fluctuations/flicker in low

voltage supply systems for equipment with rated
current # 16A

EN55024 (1998) Information technology equipment – immunity characteristics

- Limits and methods of measurement

EN61000-4-2 (1995) Electrostatic discharge immunity

EN61000-4-3 (1997) Radiated, radio frequency, electromagnetic field
Immunity

EN61000-4-4 (1995) Electrical fast transient/burst immunity

EN61000-4-5 (1995) Surge Immunity

EN61000-4-6 (1996) Immunity to conducted disturbances, induced by radio
frequency fields

EN61000-4-8 (1994) Power frequency magnetic field immunity

EN61000-4-11 (1994) Voltage Dips, short interruptions and voltage
variations immunity

EU Low Voltage Directive 72/23/EEC:

EN 60950-1 (2000) Safety of Information Technology Equipment,
including electrical business equipment

Introduction

Congratulations on your purchase of the ptf 1226 Auto Switch with Distribution
unit, with a comprehensive remote Monitor/Control interface!

This product meets the highest standards of quality and reliability, and Precise
Time and Frequency, Inc wants to insure that you enjoy the maximum benefits
and functionality that this unit can provide.

The technology within this unit uses the decades of experience in time and
frequency applications of our engineering team, to provide a unit that is highly
advanced, and gives a very powerful feature set in an inexpensive and compact
package,

Operation of the unit is straightforward and the contents of this manual are
designed to provide a basic understanding of the product, set-up and
functionality, and procedures for maintenance and repair.

If you have any questions or concerns, please do not hesitate to contact our
technical service department who will be pleased to provide assistance.

Please help us to live up to our stated objectives, our company motto is:

KNOW THE NEEDS AND EXPECTATIONS OF YOUR CUSTOMER…THEN DELIVER!

Once again, thank you for purchasing our product, and we look forward to you
utilizing Precise Time and Frequency, Inc. for your future time and frequency
instrumentation needs.

President
Precise Time and Frequency, Inc.

50L Audubon Road, Wakefield, MA 01880, USA

Tel: [phone] Fax: [phone] e-mail: [e-mail] www.ptfinc.com

CONTENTS

1. Technical Overview

2. Specifications

3. Unpacking/Inspection/Installation

4. Operation

5. Monitor/Control Interface

6. Maintenance

7. Contact Information – Technical Assistance

1. ptf 1226 Auto Switch with Distribution - Technical Overview

The ptf 1226 is an extension on the prvious ptf 1226A, and adds additional inputs
capability, additional output capability, and enhanced monitoring and control. The
unit is configurable according to application requirements and can house up to 3
channel pairs of auto switch input, and up to 36 distribution outputs all housed in
one, 2U high rack mounting unit.

The input signals accommodate either a 13dbm RF sine wave (1volt RMS), a
TTL digital input (usually 1PPS), or IRIG B amplitude modulated time code. The
channel characteristics are factory configured before shipment.

Each Switching Channel selects the primary input and routes it to a distribution
module to provide the required number of outputs. Detection logic embedded in
an on-board CPLD on the auto switch modules determines if there is a fault
condition on the primary input and then, if so, automatically switches to the
backup input, provided the backup input is in a “healthy” condition.

In addition, the unit continuously monitors all switching channel inputs and
distribution outputs, and provides a summary fault indication (change over relay
contacts) if any one of the primary or backup inputs or any of the distribution
outputs is reporting a fault.

The Auto Switch normally outputs the primary channel input signals, and
automatically switches to the back-up channel based on health status of the
measured inputs

Output (to BNC)

Input A

Input B

Figure 1. Photograph of internal Auto Switch Module

If the unit is fitted with RF distribution, it will also provide an indication of the
analog rms output level. This is derived by means of an RF to analog level
converter which is then routed to an on-board A/D converter to be read by the
processor module and output via the Monitor/Control interface.

The remote Monitor/Control interface monitors all channel inputs and outputs,
and provides a remote Ethernet TCP/IP interface (via telnet), an SNMP interface,
and an RS232 serial interface. In addition to monitoring status of the unit, the
remote Telnet and Serial interfaces can be used to control individual channel
modes (Auto or Manual) and to select channel inputs (Primary or Backup).

2. ptf 1226 Auto Switch/Distribution - Specifications

2.1.1. Electrical

RF Inputs – 2 per RF channel*

Frequency Range 900kHz to 20MHz
Level 1V rms/ 13dBm (nominal)
Load Impedance 50Ω
Connectors BNC

Digital Inputs – 2 per Digital channel*

Frequency Range 0.01 Hz to 10MHz
Levels TTL low (<0.5V) TTL High(>3V)

Time Code Inputs – 2 per Time Code channel*

Frequency Range 100 Hz to 1MHz
Level 3v pk-pk nominal (High) 1V pk-pk nominal (Low)

Note: Maximum number of input channel pairs (any combination) is 3

Switching

A/B Input Isolation > 50dB
Switching automatic < 3ms
Alarm Front panel Red LED
Summary alarm on change over relay.

Distribution Outputs

RF Outputs*

Frequency Range 900kHz to 20MHz
Level 1 V rms/13dBm (nominal) – will accept 0 to 15 dBm
Load Impedance 50Ω
Connectors BNC

Digital Outputs*

Frequency Range 0.01 Hz to 10MHz
Levels TTL low (<0.5V) TTL High(>3V)
Load Impedance 50Ω
Connectors BNC

IRIG B Time Code Outputs*

Frequency Range 100Hz to 1MHz
Level 3V pk-pk nominal(high) 1V pk-pk nominal (low)
Load Impedance 50Ω
Connectors BNC

*Note: Up to a total of 36 outputs maximum of any combination of above
in groups of 4.
Example configurations:

Configuration 1 12 RF, 12 Digital, 12 IRIG B

Configuration 2 36 RF

Configuration 3 24 RF, 8 Digital, 4 IRIG B

2.1.2. Power Input

Standard AC power input:
Input voltage 85 to 264 V AC
Input Frequency range 45 to 65 Hz

DC power input:

Input voltage 120 to 270 V DC

Optional DC Supply: 18 to 72 VDC
(in place of AC input)

2.1.3. Dimensions

ptf 1226 2U Chassis (HxWxD) 3.5 x 17 x 12 inches

2.1.4. Weight

Chassis <15 pounds

(dependent upon configuration)

2.1.5. Environmental

Operating Temperature: 0º C to +55º C

Storage Temperature: -40º C to +70º C

Relative Humidity up to 95% RH non-condensing

3. Unpacking/Inspection/Installation

3.1. Unpacking/Inspection

The ptf 1226 Auto Switch together with accessories is shipped in a
custom designed package. Upon receipt the equipment should first be
visually inspected for any signs of visible damage.

If visible damage is apparent immediate notification should be given to
both Precise Time and Frequency, Inc., and the carrier responsible for
shipment. Do not discard the shipping container, which should be made
available for inspection by the carrier.

For purposes of unit reference, the unit serial number located on the rear
panel of the unit should be quoted in all communications.

3.2. Chassis Installation

The ptf 1226 chassis is supplied with rack ears ready for simple
installation into a standard 19-inch rack frame/cabinet.
For adequate support when mounted into the rack, a rear supporting bar
or tray should be used as the rack ears are designed to secure the unit in
the rack, NOT to support the full weight of the unit.

Attention should be given to the internal rack environment to insure the
unit operates within it’s specified operating temperature range of 0 to 50
deg. C also noting that the unit relies upon convection for cooling, so
there should be sufficient air flow to accommodate this.

3.3. Power Connection

Power is supplied by connecting the supplied ac power cable to and AC
source, at 120 or 230 V AC, +/-15%. The AC input is a universal input –
no range switching is required.

3.4. Input/Output Connections

BNC connectors are provided for the standard ptf 1226 inputs and
outputs.

Connections are shown in the following section.

Ch 2

Ch 1

inputs

1 2

Channel outputs

1 through 36

1 2

inputs

Ch 3

inputs

1 2

pin 8

Common

Ethernet Port

Power input connector

4. ptf 1226 – Operation

Operation of the ptf 1226 is extremely straightforward. Once all of the required
input and output connections have been made power can be applied for the unit.

Ground
Stud

RS232 Control/Monitor
pin 2 Transmit
pin 3 Receive
pin 5 Ground

Fault Relay
pin 1 Normally Open
pin 7 Normally Closed

Rear Panel Port Connections ptf 1226

5. Monitor / Control Interfaces

5.1. Telnet

5.1.1. Command Format

The telnet interface is designed as a machine interface, and therefore
characters sent to the unit are not echoed as this imposes undue
difficulties on the transmitting device. Command format is of the form :

[Command][Space][Data][Enter]

Where;

Command is in the form DXX e.g. D01

Space is ASCII 32(decimal)

Data can be numbers, or characters according to the command

Enter is line feed/CR combination (ASCII 10 dec. and 13 dec.)

All entered characters are converted internally to UPPER CASE, therefore
either upper or lower case characters can be used

Some commands are “locked” when the correct conditions are not set,
e.g. the CH X input commands can only be executed when the desired
channel mode is selected as Manual.

There are also several special commands that are of the form;
[Command][Enter] e.g. the Status command.

Available commands are shown in section 5.1.3

In addition typing ;

[HELP][SPACE][COMMAND][ENTER]
or typing
[COMMAND][SPACE][?][ENTER]

Will display additional help information on the selected command.

5.1.2. Login

To login to the unit via the telnet interface, it is necessary to provide
a user name and password. The user name is user definable, e.g.
Admin. The password can be numbers only and the default
password is 123456.

5.1.3. Commands

Command Description Type Range Comments

D01 CH1 Input String Primary / Backup Locked when in

Auto
D02 CH1 Mode String Auto / Manual
D03 CH2 Input String Primary / Backup Locked when in

Auto
D04 CH2 Mode String Auto / Manual
D05 CH3 Input String Primary / Backup Locked when in

Auto
D06 CH3 Mode String Auto / Manual
D07 Reserved
D08
D09
D10
D11
D12
D13
D14
D15
D16
D17 Date (UTC) String MM/DD/YYYY Only valid dates

D18 Time (UTC) String HH:MM:SS 24 hour format

D19 IP xxx.xxx.xxx.xxx IP address
D20 NET MASK xxx.xxx.xxx.xxx Net Mask
D21 GATEWAY xxx.xxx.xxx.xxx Gateway
D22 DHCP String ON / OFF
D23 PASSWORD Number 1 > 2147483647
D24 Set Default Password
D25 Reserved
D26 Reserved
D27 Baud Rate Number 9600

Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved

19200

(Manual or NTP)

(Manual or NTP)

Baud rate for serial

port

57600

D28 IP SNMP

MGR
D29 SNMP Traps String On / Off
D30 IP NTP

SERV
D31 NTP u/d int Integer 0 to

D32 Man Timeout Integer 0 to

D33 TNET Port Integer 1 to 65536 Telnet port number
D34 TNET Timer Integer 0 to

D48 o/p Act. Integer 1 to 36 Set output active
D49 o/p Inact. Integer 1 to 36 Set o/p inactive
LOGOUT Telnet String Logout Logs out telnet

HELP Print Help String Help Prints help menu
VERS Version String Vers Displays s/w

Macno Macno String Macno Display unit MAC

Reset Unit Reset String Reset Restarts unit
Status Unit Status String Status Give channel

OPSTAT Digital Status String OPSTAT
ANSTAT Analog Stat. String ANSTAT Analog o/p values
D34 Reserved
D35 Reserved
D36 Reserved
D37 Reserved
D38 Reserved
D39 Reserved
D40 Reserved
D41 Reserved
D42 Reserved

xxx.xxx.xxx.xxx IP IP address of

SNMP manager

xxx.xxx.xxx.xxx IP IP address of NTP

server
0 = no timeout

100000(seconds)

0 = no timeout

100000(seconds)

0 = no timeout

100000(seconds)

session

version

#

status

5.1.4. Help Screens

When used with a standard interface such as Hyper terminal, it can be
helpful to be able to quickly see available commands and their formats.

The unit includes both a summary help screen, that provides a quick
reference for available commands, and reports the currently set values of
the various parameters, and also multi-line help for each of the
commands.

The summary screen is accessed by typing;
[HELP][ENTER]
at the command prompt and the multi line help for a single command is
accessed by typing either;
[HELP][SPACE][COMMAND][ENTER] or
[COMMAND][SPACE][?][ENTER]

Examples of the help screens as displayed using the windows telnet utility
are shown below;

Summary Help Screen

Expanded help on specific commands

5.1.5. Status, Opstat, and Anstat Commands

The Status command is provided as a means of obtaining a quick summary of
the status of the unit, and provides summary information on each of the Auto
switch channels, together with other settings such as the Manual mode and
telnet timeouts, Ethernet status etc.

Status Screen

The OPstat command is provides a summary of the status of the Digital Outputs,
and provides summary information on each of the output channels.

Opstat Screen

The Anstat command is provides a summary representation of the analog RF
output values for each of the RF channel inputs and outputs.

Anstat Screen

Note:

Internally the outputs are provided through individual modules referred to as
“Quad Blocks”, providing 4 outputs (either RF, Digital, or Time Code) per module.

The unit is also divided into three rows of 12 outputs, the top row being referred
to as Row A, the middle as row B, and the bottom as row C. Typically Quad
Blocks of the same type will be fitted in the same row, with the maximum number
of Quad Blocks per row being three. Standard configuration practice is to fit RF
Quad Blocks in row A, Digital in row B, and Time Code in row C, however some
configurations may not permit this i.e. if the unit is configured with 24 RF outputs
(6 RF quad blocks), 4 Digital outputs(1 Digital quad block), and 4 Time Code
outputs (1 Time Code quad block), the RF quad blocks would be fitted in rows A
and B, and the Digital and Time Code quad blocks would be fitted in row C.

5.2. RS 232

5.2.1. Configuration

5.2.2. Command Format

5.2.3. Login

5.2.4. Commands

5.2.5. Help Screens

5.2.6. Status Command

The RS232 port factory default setting is 57600-8N1, but may be
changed through the RS232 menu.

The RS232 command format has been designed to have an
identical look and feel as the telnet interface. The main difference is
that the RS232 is primarily provided for local control and therefore
the commands are echoed.

For the command format please refer to section 5.1.1

As the RS232 is designed for local access, no login is required to
access this capability as physical presence is assumed.

Available commands are exactly the same as for the telnet
interface. Please refer to section 2.1.3

The RS232 Help Screens are identical to those provided on the
telnet interface. Please refer to section 2.1.4

Format of the Status command is exactly the same as the format
for the telnet interface. Please refer to section 2.1.5

5.3. SNMP Agent

5.3.1. General

The Auto switch/Distribution unit includes an SNMP agent
(SNMPv1) using the standard UDP interface and providing basic
information on the unit (location, capabilities etc.) together with
traps on alarm conditions that are sent to the address set as the
SNMP manager IP address.

5.3.2. SNMP Queries and Traps

SNMP traps are available to provide summary event information to
the SNMP manager. Specific traps available are;

Trap#1 Channel Mode Change (Auto/Manual)
Trap#2 Channel Input Change (Primary/Backup)
Trap#3 Channel Primary Input Status (Fault/Okay)
Trap#4 Channel Backup Input Status(Fault/Okay)
Trap#5 Input Status Change (Fault/Okay)
Trap#6 Output Status Change (Fault/Okay)
Trap#7 Auxiliary Input Status Change (High/Low)

Traps can be enabled or disabled from either the telnet or the serial
Monitor/Control interface, or the SNMP interface.

Screen shots of the SNMP Query screen and trap ringer console after initiating a
number of “trap” events, are shown below;

SNMP Query Screen

SNMP Trap Ringer Screen

5.4. SNMP SMI/MIB Files

The SMI and MIB files for the SNMP manager are shown in the following
pages;

SMI File;

-- *****************************************************************

-- Precise-SMI.txt: Precise Time and Frequency Enterprise

-- Structure of Management Information

--

-- September 2003 Les Herbst

--

-- Copyright (c) 2003 by PTF Inc

-- All rights reserved.

--

-- *****************************************************************

Precise-SMI DEFINITIONS ::= BEGIN

IMPORTS
OBJECT-TYPE
FROM RFC-1212
enterprises,
mgmt
FROM RFC1155-SMI;

--

-- Node Definitions

--

-- try and add a small subset of SNMP2

-- 1.3.6.1.2.1
mib-2 OBJECT IDENTIFIER ::= { mgmt 1 }

-- 1.3.6.1.2.1.1
system OBJECT IDENTIFIER ::= { mib-2 1 }

-- 1.3.6.1.4.1.18507
preciseinc OBJECT IDENTIFIER ::= { enterprises 18507 }

-- 1.3.6.1.2.1.1.1
ptfproduct OBJECT IDENTIFIER ::= { system 1 }

-- Note, leaf nodes under ptfproduct 1-4 are

-- prod type

-- prod version

-- prod location

-- prod local support phone

-- then comes modules folder

-- 1.3.6.1.2.1.1.1.5
ptfmodules OBJECT IDENTIFIER ::= { ptfproduct 5 }

-- 1.3.6.1.2.1.1.1.6
ptfdata OBJECT IDENTIFIER ::= { ptfproduct 6 }

END

MIB File;

-- **************************************************************

-- **************************************************************

-- -- Copyright 2009 Precise Time and Frequency Inc

--

-- DESCRIPTION:

-- This file contains the ptf 1220X Auto Switch with Distribution

-- Remote Monitor private MIB.

--

-- **************************************************************

-- **************************************************************

PRECISE1220Xv3-MIB DEFINITIONS ::= BEGIN

IMPORTS
OBJECT-TYPE
FROM RFC-1212
preciseinc

-- ptf1220Xswitch_distr,

-- ptf1220Xmodules,

-- ptf1220Xdata
FROM Precise-SMI;

-- 1.3.6.1.4.1.18507.9
ptf1220XSwitch_Distr OBJECT IDENTIFIER ::= { preciseinc 9 }

-- Note, leaf nodes under ptfproduct 1-4 are

-- prod type

-- prod version

-- prod location

-- prod local support phone

-- then comes modules folder

-- 1.3.6.1.4.1.18507.9.7.10
ptf1220Xmodules OBJECT IDENTIFIER ::= { ptf1220XSwitch_Distr 7 }

-- 1.3.6.1.4.1.18507.9.8.8
ptf1220Xdata OBJECT IDENTIFIER ::= { ptf1220XSwitch_Distr 8 }

-- 1.3.6.1.4.1.18507.1
precise_name OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { preciseinc 1 }

-- 1.3.6.1.4.1.18507.2
precise_phone OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { preciseinc 2 }

-- 1.3.6.1.4.1.18507.3
precise_email OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { preciseinc 3 }

-- So it goes private-enterprises-preciseinc - ptfproduct -producttype

-- assume only one 'product' or device handled by one resident snmp agent

-- on that product

-- 1.3.6.1.4.1.18507.9.1
product_type OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220XSwitch_Distr 1 }

-- 1.3.6.1.4.1.18507.9.2
product_version OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220XSwitch_Distr 2 }

-- 1.3.6.1.4.1.18507.9.3
product_location OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-write
STATUS mandatory
::= { ptf1220XSwitch_Distr 3 }

-- 1.3.6.1.4.1.18507.9.4
location_support_phone OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-write
STATUS mandatory
::= { ptf1220XSwitch_Distr 4 }

-- 1.3.6.1.4.1.18507.9.7.1
has_ntpClient OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only

STATUS mandatory
::= { ptf1220Xmodules 1 }

-- 1.3.6.1.4.1.18507.9.7.2
has_telnet OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 2 }

-- 1.3.6.1.4.1.18507.9.7.3
has_snmp OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 3 }

-- 1.3.6.1.4.1.18507.9.7.4
has_http OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 4 }

-- 1.3.6.1.4.1.18507.9.7.5
has_RF_Sw OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 5 }

-- 1.3.6.1.4.1.18507.9.7.6
has_DIG_Sw OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 6 }

-- 1.3.6.1.4.1.18507.9.7.7
has_IRIG_Sw OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 7 }

-- 1.3.6.1.4.1.18507.9.7.8
has_RF_Distr OBJECT-TYPE

SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 8 }

-- 1.3.6.1.4.1.18507.9.7.9
has_DIG_Distr OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 9 }

-- 1.3.6.1.4.1.18507.9.7.10
has_IRIG_Distr OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xmodules 10 }

--

--

--

-- 1.3.6.1.4.1.18507.9.8.1
up_time OBJECT-TYPE
SYNTAX TimeTicks
ACCESS read-only
STATUS mandatory
::= { ptf1220Xdata 1}

-- 1.3.6.1.4.1.18507.9.8.2
last_status_change OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-only
STATUS mandatory
::= { ptf1220Xdata 2}

-- 1.3.6.1.4.1.18507.9.8.3
num_mode_changes OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory

::= { ptf1220Xdata 3 }

-- 1.3.6.1.4.1.18507.9.8.4
num_channel_changes OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
::= { ptf1220Xdata 4 }

-- 1.3.6.1.4.1.18507.9.8.5
num_faults_detected OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
::= { ptf1220Xdata 5 }

-- 1.3.6.1.4.1.18507.9.8.6
num_traps_sent OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
::= { ptf1220Xdata 6 }

--

-- Command and Control

--

-- 1.3.6.1.4.1.18507.9.8.7
send_traps_if_1 OBJECT-TYPE
SYNTAX Counter
ACCESS read-write
STATUS mandatory
::= { ptf1220Xdata 7 }

-- 1.3.6.1.4.1.18507.9.8.8
snmp_mgr_ip OBJECT-TYPE
SYNTAX OCTET STRING
ACCESS read-write
STATUS mandatory
::= { ptf1220Xdata 8 }

END

5.5. HTTP, Web Interface

The ptf 1226 web interface allows a sub set of the commands to be
entered via a web page through a standard web browser. The commands
available on the web interface are shown in the table below, and can also
be viewed on the web interface “vali commands” page;

Command Description Type Range Comments

D01 CH1 Input String Primary / Backup Locked when in

Auto
D02 CH1 Mode String Auto / Manual
D03 CH2 Input String Primary / Backup Locked when in

Auto
D04 CH2 Mode String Auto / Manual
D05 CH3 Input String Primary / Backup Locked when in

Auto
D06 CH3 Mode String Auto / Manual
D17 Date (UTC) String MM/DD/YYYY Only valid dates

(Manual or NTP)
D18 Time (UTC) String HH:MM:SS 24 hour format

(Manual or NTP)
D19 IP xxx.xxx.xxx.xxx IP address
D20 NET MASK xxx.xxx.xxx.xxx Net Mask
D21 GATEWAY xxx.xxx.xxx.xxx Gateway
D22 DHCP String Off or On
D23 Password integer Numbers only
D27 Serial Port

Baud Rate
D28 IP snmp mgr xxx.xxx.xxx.xxx
D29 SNMP traps String ON or OFF
D30 IP NTP serv. xxx.xxx.xxx.xxx
D31 NTP update integer 0, 2 to 100000 0=no update
D32 Man. timeout integer 0 to 100000 secs 0=no timeout
D33 Telnet Port integer 1 to 65536 Default=23
D34 Tnet timeout integer 1 to 100000 secs 0=no timeout
Status Status string Status Give channel status
Anstat Analog stats string Anstat Analog o/p values
Logout Logout telnet
Reset System

restart

9600, 19200,
or 57600

5.5.1. Web pages

To log onto the web pages the user must enter a user name and the
system password. User name for the web interface is “admin” (all lower
case).The log in screen and web pages are shown below;

Login Screen

Command Entry Page

Status Response Page

Anstat Response Page

To logout of the web interface close the browser.

5.6. Local (Front Panel)

The ptf 1226 Auto switch/Distribution unit front panel layout is shown
below;

5.6.1. Commands

Each of the (three) input channels of the unit can be configured as either
in Auto or Manual mode.

If a channel is in Auto mode, the Auto switch monitors the health of the
selected input and if the selected input goes unhealthy, the channel will
automatically switch to the other input.

Each channel of the unit can be toggled between Auto and Manual mode
by momentarily depressing the MODE membrane switch for that channel.

If a channel is in Manual mode, the input channel can be switched by
momentarily pressing the CHANNEL membrane switch. Pressing the
CHANNEL switch again will toggle the channel back to the original input.
In Auto mode the CHANNEL switch is not operational.

5.6.2. Monitors

Each switch channel includes indicators for channel mode (red LED
illuminates when channel mode is selected as Manual) and bi-color green
/red LEDs for channel input selected (green=primary, red=backup).

When in Auto mode, the unit will not switch to a faulty input, even if the
currently selected input goes into fault. In Manual mode, the input can be
switched regardless of whether or not the destination input is in a fault
mode. A local summary alarm monitor is provided on a 9 pin D type
connector located on the unit rear panel. The output is on clean relay
contacts.

Front Panel Layout

6. Maintenance

6.1. Overview

The ptf 1226 Auto Switch/Distribution unit uses state-of-the art solid state
and semi-conductor, primarily surface mount, components.

All of the components are selected for their inherent high reliability, and
advanced techniques with highly sophisticated equipment, are used for
assembly and test of the unit.

Due to the above, no periodic maintenance of the unit is required and the
units can be expected to deliver many years of trouble free operation.

Any maintenance or service of the unit should be performed at a Precise
Time and Frequency, Inc. authorized facility, to insure the appropriate
equipment and expertise is available.

7. Contact Information – Technical Assistance

The Precise Time and Frequency, Inc service department normal hours of
operation are from Monday to Friday, between the hours of 8.00 a.m. and

5.00 p.m. US Eastern Standard Time.

Before returning any equipment for service or repair please contact our
service department for an RMA number.

Tel: [phone]
Fax: [phone]
E-mail: service@ ptfinc.com

Shipping address is:

Precise Time and Frequency, Inc.
50L Audubon Road
Wakefiel, MA 01880
USA

Attn: Service Manager

Billing address is:

Precise Time and Frequency, Inc.
50L Audubon Road
Wakefield, MA 01880
USA

Attn: Accounts

50L Audubon Road, Wakefield, MA 01880, USA

Tel: [phone] Fax: [phone] e-mail: [e-mail] www.ptfinc.com