PTF 3207A Manuale utente

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ptf 3207A

Time and Frequency System

User Guide

Document #:

Revision:G

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NOTE: This manual is best viewed in electronic form. Clicking on any of

the Contents items will take you to that item. To return to the

contents page, click on the "Go to Contents" link at the foot of the

page.

Notices

All product names, service marks, trademarks, and registered trademarks

used in this document are the property of their respective owners.

The manual’s contents do not apply to previously released versions of ptf

3207A hardware or software.

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Contents

1: Equipment Overview ..............................................................................................................................4

ptf 3207A Time and Frequency System Description and Features.........................................................4

Clock Architecture...................................................................................................................................6

2: System Specifications..............................................................................................................................7

Mechanical/Environmental ....................................................................................................................7

Front Panel Display: ................................................................................................................................7

Serial I/O: User-selectable RS-232.................................................................................................7

AC Power Supply.....................................................................................................................................7

Status LED ...............................................................................................................................................7

System Time & Frequency Accuracy.......................................................................................................8

Standard Inputs and Outputs................................................................................................................10

ENET –Ethernet Port ............................................................................................................................12

3: Installation/Configuration.....................................................................................................................16

Installing the GNS Antenna...................................................................................................................16

GNS-related Accessories.......................................................................................................................17

Making Additional Connections............................................................................................................18

Connecting the Power Supply...............................................................................................................19

Navigating the front panel menu system .............................................................................................20

Configuring Ethernet Settings...............................................................................................................22

Using the Command Line Interface ......................................................................................................25

4. User Interfaces......................................................................................................................................34

Time and Status Displays ......................................................................................................................35

Additional status displays .....................................................................................................................36

5. Software Upgrades ...............................................................................................................................37

Step 1 - Down loading the new software .............................................................................................38

Step 2 - Transferring the down loaded upgrade file and installing on the instrument ........................41

Instructions for installing the TFTP utility.............................................................................................46

Instructions for allowing the TFTP utility through Windows Firewall ..................................................57

6. Sales and Customer Assistance.............................................................................................................64

7. Revision Record.....................................................................................................................................65

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1: Equipment Overview

ptf 3207A Time and Frequency System Description and Features

The ptf 3207A provides high-precision time and frequency signals. Its modular design allows factory

customization for a wide range of applications. In its standard configuration, the ptf 3207A functions as

a Time Code Unit which receives an IRIG time code input, synchronizes its internal oscillator to that

input, and produces time code and frequency outputs.

When paired with its internal timing-optimized GPS receiver, the ptf 3207A provides 1x10-12

frequency output accuracy, and better than 30 nS RMS accuracy to UTC (USNO). The ptf 3207A is

available in a 19-inch 1U or 2U chassis with rack mount ears for installation.

This new range of Time and Frequency Clocks incorporates a flexible architecture to meet the most

demanding clock synchronization requirements. The ptf 3207A incorporates a dual redundant

reference source design that enables high-availability of the clock source. To achieve high-availability,

the user configures the ptf 3207A with dual independent GPS receivers and antennas, or with one GPS

antenna/receiver and one time code or 1PPS reference. In addition, the 1U chassis, when configured

with two modules, provides dual redundancy and distribution in a single 1U unit.

Optional oscillator upgrades provide enhanced short term stability when locked to a reference source,

and improved holdover ‘flywheeling’ when a reference source is unavailable. See “P7: Oscillators” on

page 223 for more information.

Features and Options

Three user interfaces are available for managing the ptf 3207A:

• The web interface, available using a browser connected to the Ethernet port

• The command line interface, available from the serial port and standard Ethernet port (telnet)

• The keypad/display interface, available on the front panel of the ptf 3207A

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The ptf 3207A’s modular design allows factory customization for a wide range of applications. The

following range of features are available in the standard configuration:

• Voltage-controlled temperature-compensated crystal oscillator (VCTCXO)

• 1 PPS Output

• Digital Output 1/10/100 PPS, 1/10/100 kPPS,

1/5/10 MPPS, IRIG B 000 (DCLS)

1 PPM, 1 PHPH, 1 PPH

• Time Code Output (IRIG B 120 1kHz amplitude modulated)

•Alarm clean contact Output

• Time Code Input (AM or DC: IRIG- B)

• Auxiliary Reference Frequency Input (10 MHz)

• Ethernet Port (10/100 Base-T)

• Command Line Interface (Telnet and Serial Port)

• Simple Network Management Protocol (SNMP)

• Web Interface (HTML)

• Vacuum florescent display, 19-button keypad

• 90-264 VAC

In addition, the ptf 3207A’s standard features can be expanded with the following optional

configurations:

• GPS C/A Receiver References

• Network Time Server (NTP)

• T1/E1 Output

• RS485 Control/Monitor interface

• Oscillator Options: OCXO, ULNO, Rubidium

• DC Power Supplies for 18 to 72, and 48 VDC applications

• Redundant power supplies

Optional oscillator upgrades provide enhanced short term stability when locked to a reference source,

and improved holdover ‘flywheeling’ when a reference source is unavailable.

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

Clock Architecture

The following figure provides a simplified view of the ptf 3207A’s clock architecture.

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

2: System Specifications

Mechanical/Environmental

Operating Temperature:

0 °C to +55 °C (+32 °F to +104 °F)

Maximum Rate of Change:

8 °C per hour

Storage Temperature:

-55 °C to +85 °C (-67 °F to +185 °F)

Humidity: to 95% non-condensing

Operating Altitude:

Maximum 4 km (2.49 mi. or 13147 ft.)

Front Panel Display:

Vacuum Fluorescent Display (VFD)

3.27” x 0.88" (83mm x 20 mm). 256X60

pixels.

Displays startup messages, clock status, time

and day of year, and menu functions.

Keypad: 0–9, F1, F2, UP, DOWN, LEFT, RIGHT,

MAIN, MENU, ENTER

Serial I/O: User-selectable RS-232

communication protocol up to 115200 baud

AC Power Supply

Input:

Input connector: IEC 320 connector

Input voltage range: UL: 100 –240 VAC

Universal, 90 –264 VAC and 110 –370 VDC

Input freq. range: 47 Hz –440 Hz

Output:

+ 5 V, 15 watts, 0 to 3 amps

+ 15 V, 22.5 watts, 0 to 1.5 amps

-15 V, 7.5 watts, 0 to 0.5 amps

Wattage: 45 watts maximum

Power Supply Status:

Visual (green panel LED)

Status LED

Alarm Status LED:

Green LED on with no fault

Amber LED with fault

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

System Time & Frequency Accuracy

The tables below describe system clock accuracy while locked to the reference source indicated.

GPS Receiver Reference

1 PPS Output: UTC(USNO) 20 nS RMS, 100 nS peak

Frequency Output Accuracy: <1 x 10-12 @ 1 day

Frequency/Timing,

Allan Deviation, Stability

1 second 5 x 10-11

10 seconds 1 x 10-11

100 seconds 2 x 10-11

1000 seconds 5 x 10-12

10000 seconds 7 x 10-13

IRIG B (am) Code Output Accuracy: 10 µS to the 1 PPS output

DC Level Shift Code Output Accuracy 200 nS to the 1 PPS output

Time to System Lock <20 min. typical

Time Code Input Reference

1 PPS Output: 10 µS to the incoming code, IRIG B (am)

10 nS to the incoming code, IRIG B (DCLS)

Frequency Output Accuracy: 1x10-10, referenced to 5x10-11 carrier @ 1 day

Stability of Frequency/Timing

Allan Deviation: 5x10-9 @ 10 sec, referenced to 3x10-11 @ 10 sec carrier

Accuracy of IRIG B 120 (am)

Time Code Output: 10 µS to the incoming code

Accuracy of IRIG B 000 (DC Level Shift) 10 µS to the incoming code (IRIG B am)

Code Output: 10 nS to the incoming code (IRIG B DCLS)

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

1 PPS Input

1 PPS Output: <30 nS to the incoming 1 PPS

Stability of Frequency/Timing

Allan Deviation: 1x10-11 @ 10 sec

Accuracy of IRIG B 120 (am)

Code Output: 10 µS to the incoming 1 PPS

Accuracy of IRIG B 000 (DC Level Shift)

Code output: 100 nS to the incoming 1 PPS

Ext RF Input

Frequency output accuracy is equal to the reference < 1 x 10-12.

Note: Manually set the time and date, when using 1 PPS or Ext RF as the primary references. Set the

date (year) when using IRIG B 000, or IRIG B 120.

Chassis

1U Chassis: Standard 19" EIA Rack System, hardware included

Receiver Size: 1.75 in. x 17.1 in. x 16 in.

Weight: Standard configuration, without options <10 lb.

2U Chassis: Standard 19" EIA Rack System, hardware included

Receiver Size: 3.5 in. x 17.1 in. x 16 in.

Weight: Standard configuration, without options <14 lb.

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

Standard Inputs and Outputs

The following specifications describe the standard inputs and outputs on the ptf 3207A.

Serial I/O Port

The standard serial data port is a bi-directional EIA standard RS-232C interface. The serial data port

baud rate can be configured via the Keypad / Display, or Standard Ethernet port.

Control and monitoring is available through an RS232 port (female 9-contact D connector) and over an

Ethernet port (RJ45 connector). The RS232 port is configured as DTE, receiving data on pin 3 and

transmitting data on pin 2. Pin 5 is chassis ground. Pins 1, 4, and 6 are used for the instrument

summary alarm relay, see table below.

DB9 Connector

Pin #

Function

Comments

Alarm Relay NO

Closed when in alarm

TX Data (RS232)

RX Data (RS 232)

Alarm Relay NC

Open when in alarm

Ground (RS232)

Alarm Relay Common

Time Print Tx(RS232)

Optional

Time Print Gnd(RS232)

Optional

Interface:

RS-232, ground, receive and transmit only.

Data Rates:

4800, 9600 and 19200, 38000, 57,600 bps

Data Bits:

Parity:

none

Stop Bits:

Connector:

Male 9-pin D subminiature

Pin Assignment:

1------N/C

2------Rx (RS-232)

3------Tx (RS-232)

4------N/C

5------GND

6------

7------

8------

9------

Factory settings:

57,600, 8, N, 1

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