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Peak P701 L Installation And Operating

Band up/ downconverter
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Installation and Operating handbook
P700 L Band Up/ Downconverter
(Covering P701 Downconverter and
P702 Upconverter options)
Handbook Issue 3.1, Wednesday 27
November, 2001
th
Covering software versions V2.02 or later
2001
EN 55022 CLASS B
EN 50082-1
EN 60950
PEAK COMMUNICATIONS Ltd.
Kirklees House, 22 West Park Street
Brighouse, West Yorkshire
HD6 1DU, England
Phone +44 (0)1484 714200
Fax +44 (0)1484 723666
IMPORTANT NOTE: THE INFORMATION AND SPECIFICATIONS
CONTAINED IN THIS DOCUMENT SUPERSEDE ALL PREVIOUSLY
PUBLISHED INFORMATION CONCERNING THIS PRODUCT
PEAK Communications Ltd maintains a continuing programme of product improvement
and therefore reserves the right to change specifications without notice

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  • Page 1 Fax +44 (0)1484 723666 IMPORTANT NOTE: THE INFORMATION AND SPECIFICATIONS CONTAINED IN THIS DOCUMENT SUPERSEDE ALL PREVIOUSLY PUBLISHED INFORMATION CONCERNING THIS PRODUCT PEAK Communications Ltd maintains a continuing programme of product improvement and therefore reserves the right to change specifications without notice...

  • Page 2: Table Of Contents

    Table of Contents 1 INTRODUCTION ..................2 DESCRIPTION................... 2.1 FUNCTION......................2.2 MECHANICAL DESCRIPTION................. 2.3 EMC AND SAFETY ....................2.3.1 EMC ........................2.3.2 Safety; Standards ....................2.3.3 Safety; Environmental and Installation............2.4 FRONT PANEL DESCRIPTION................. 2.5 REAR PANEL DESCRIPTION................2.6 FAULT PHILOSOPHY ..................3 SUMMARY OF SPECIFICATIONS............
  • Page 3 6.3 PRINTER CONNECTION ................... 7 1 FOR 1 OPERATION ................7.1 THEORY........................7.2 SWITCHING PHILOSOPHY................7.3 PRACTICAL 1 FOR 1 IMPLEMENTATION ............ 8 APPENDIX A : P700 CONNECTOR PINOUTS ......... 8.1 ALARMS CONNECTOR ..................8.2 REMOTE CONTROL INTERFACE..............8.3 1 FOR 1 INTERFACE .................... 8.4 EXTERNAL DC......................

  • Page 4: Introduction

    INTRODUCTION The P700 is a fully synthesised L Band frequency Upconverter and Downconverter. It is housed in a 1'U' high 19" rack mount chassis and is designed to connect between a Modem IF, and provide an L Band interface for an external, antenna mounted, L to SHF Block Up/Downconverter. The P700 is especially suitable for systems requiring an IBS and Eutelsat SMS compliant high stability low phase noise frequency converter for both data and analogue TV signals.

  • Page 5: Emc And Safety

    2.3.1 EMC The P700 L Band Up/Downconverter has been designed to comply with the following standards; Emissions: EN 55022 Class B; Limits and methods of measurement of radio interference characteristics of Information Technology Equipment. Immunity EN 50082 Part 1; Generic immunity standard, part 1: Domestic, commercial and light industrial environment.
  • Page 6 circumstances this will be of an adequate length for installation in the rack. If the mains cord proves to be too short then any replacement must have a similar type fuse (if fitted) and be manufactured to similar specification: check for HAR, BASEC or HOXXX-X ratings on the cable. The connector ends should be marked with one of the following : BS1636A (UK free plug 13 amp);...
  • Page 7 Fig 1 Block diagram P700 P700.H P700 Installation and Operation Handbook Page 7...

  • Page 8: Front Panel Description

    Fig 2 Front and rear panel views of P700 P700.H P700 Installation and Operation Handbook Page 8...

  • Page 9: Rear Panel Description

    FRONT PANEL DESCRIPTION Keyboard The keyboard is of the membrane type (an integral part of the front panel), and is completely sealed against penetration of liquids. The keys provide audible feedback - the internal microprocessor recognises that the key has been pressed, and makes an audible 'beep'. There are 15 keys in total - number keys in the range 0 to 9, an up arrow key (↑), down arrow key (↓), MAIN key, YES/ENTER key, and NO/PREV key.

  • Page 10: Fault Philosophy

    Tx input This connector is a 50 Ω BNC female connector. The input frequency should be within the range of 50 to 90 MHz and the input level range is -10 to -30 dBm. Tx output This connector is a 50 Ω N type female connector. The output frequency is within the range of 925 to 1525 MHz and the output level range is 0 to -20 dBm.
  • Page 11 displayed), the current status can always be assessed. The Tx and Rx OK LEDs will only be operative if the unit is equipped with a transmit or receive path, otherwise they will remain unlit under all circumstances. STATUS (red/green) Green: There are no unit faults Red: A Tx or Rx unit fault exists.

  • Page 12: Summary Of Specifications

    SUMMARY OF SPECIFICATIONS UPCONVERTER SPECIFICATION Input frequency range 50 - 90 MHz 50 Ω, better than 18 dB Input impedance/return loss BNC, 50 Ω, female Input Connector type Output frequency range 925 - 1525 MHz 50 Ω, better than 14 dB Output impedance/return loss Group delay response fc ±...
  • Page 13 Output phase noise (when driven by a signal with phase noise -70 dBC/Hz @ 100 Hz 10 dB better than these figures) -72 dBC/Hz @ 1 kHz -78 dBC/Hz @ 10 kHz -90 dBC/Hz @ 100 kHz -108 dBC/Hz @ 1 MHz Internal reference frequency 10 MHz, ovenised crystal oscillator Output frequency stability...

  • Page 14: Downconverter Specification

    DOWNCONVERTER SPECIFICATION Input frequency range 950 - 1750 MHz 50 Ω, better than 14 dB Input impedance/return loss Input connector type 'N' type female Output frequency range 50 - 90 MHz 50 Ω, better than 18 dB Output impedance/return loss Group delay response fc ±...

  • Page 15: Common Specification

    10MHz Reference output level, 0 dBm, nominal Rx port (can be disabled via front panel) Alarms 1st LO lock fail 2nd LO lock fail Power supply voltages out of limits External Rx Alarm TTL input, will monitor an external contact closure, or TTL level signal.

  • Page 16: Unpacking And Installation

    UNPACKING AND INSTALLATION UNPACKING Prior to unpacking, inspect the exterior of the shipping container for evidence of damage during transit. If damage is evident, contact the Carrier immediately and submit a damage report. Carefully unpack all items, taking care not to discard packing materials, particularly the moulded foam inserts. Should the unit need to be returned, return to the address on the front of the manual USING THE ORIGINAL PACKING CARTON unless it has been seriously damaged.

  • Page 17: Power Up

    Q703/Q703a is 1.0 amp antisurge. POWER UP At power up the unit performs an initialisation procedure which lasts approximately 3 seconds, it is normal for the unit to beep 3 times during this process. During the power-up phase the unit will display the equipment identification, the unit Serial Number and the software version fitted will be displayed.

  • Page 18: Initial Equipment Configuration

    When selecting a configuration parameter, the last setting is displayed in brackets. To select the same option again, just press the YES Key. INITIAL EQUIPMENT CONFIGURATION When a unit is shipped it will have a default configuration loaded in non-volatile memory. Unlike other equipment the P700 does not expect the user to be able to remember all the parameters that need setting, and provides a facility that prompts the user for all required parameters.
  • Page 19 Fig 3 P700 menu structure P700.H P700 Installation and Operation Handbook Page 19...

  • Page 20: Operation

    OPERATION Selecting OPERATE from the main menu will display the following screens for the transmit and receive paths (unless a fault exists): Transmit Operate screen TxF:1500.000MHz Tx O/P:-20dBm ↑ 10 MHz:OFF 16.5:OFF CARR:OFF OK Tx Operate Screen The top line of the transmit operate screen shows the output frequency and power. These are selectable from the CHANGE - U/C CONFIG menu and are self evident.

  • Page 21: Changing The Configuration

    RxF:1300.000MHz RxG:29dB ↓ 10 MHz ref:OFF 16.5:OFF OK Rx Operate Screen The top line of the receive operate screen shows the output frequency and gain, these are selectable from the CHANGE - D/C CONFIG menu and are self evident. The bottom line shows the status of the 10 MHz reference, the external 16.5 V DC and the overall receive path status.

  • Page 22: U/C Configuration

    5.4.1 U/C Configuration Selecting (1) U/C Config from the CHANGE menu displays the following screen: U/C: 1:Freq 2:I/P Pwr 3:O/P Pwr 4:Carr 5:10M 6:16.5 7:SHF U/C Config Screen The following parameters can be changed: Freq(1) The user will be prompted to enter the desired transmit frequency. At L Band this must be within the range of 925 to 1525 with a frequency step size of 125 kHz.

  • Page 23: D/C Configuration

    SHF(7) Selection of this displays a further screen shown below; U/C (SHF) 1: SHF LO 2:Set SHF LO 3:SHF Gain/Loss 4:Set SHF Gain/Loss U/C Config, SHF Screen Use of the features on the SHF Config screen allows the user to manipulate the P700 LCD display to show the overall SYSTEM frequency and output power levels.
  • Page 24 Selecting (2) on the CHANGE menu will cause the following screen to be displayed: D/C: 1:Freq 2:Gain 3:SHF LO 4:Set SHF LO 5:10M 6: 16.5 D/C Config change screen The following parameters can be modified: Freq(1) The user is prompted to enter the receive input frequency. At L band this must be within the range of 950 to 1750 MHz with a frequency step size of 125 kHz.

  • Page 25: Remote Control

    Downconverter ON (2) or OFF (1) by pressing 1 or 2 on the keypad. The software then returns to the CHANGE menu. SHF:11350.000 RxG:29dB OK ↓ 10MHz ref:OFF 16.5V:OFF D/C SHF modified operate screen 5.4.3 Remote Control Selecting Remote Control (3) from the CHANGE menu displays the following screen: REMOTE CONTROL (Disable) 1: Disable 2:Enable RS485 3:Enable RS232 Remote Control Configuration screen...

  • Page 26: 10 Mhz Reference

    5.4.4 10 MHz reference Selecting 10MHz(4) from the CHANGE menu displays the following screen: Increment 10MHz ref: 10 MHz +/- 0.0 ppm ↑↓(YES) Change 10 MHz screen The P700 allows the user to adjust the absolute frequency of the 10 MHz reference, and therefore the frequency of both the L Band Up and 70 MHz IF Downconverted signals.

  • Page 27: Test Modes

    Receive(1) On selection the user is prompted to enter the system SHF input frequency. This is entered by selecting the correct frequency via the keypad (remembering that NO will correct errors) and then entering YES. The software will then display the required SHF input signal, the L Band Input centre frequency and the resultant IF frequency.

  • Page 28: Tx Test

    The Test mode of the P700 contains several features which will be of use to the operator for fault finding in the field, or testing the integrity of the unit. The test mode allows the user to modify local oscillator frequencies and gain stages separately, set up a RF loopback from IF to IF and finally to monitor the units internal power supplies.

  • Page 29: Rx Test

    Att 2/3(4) This allows the operator to change the combined value of the 2nd and 3rd attenuator (post mixer), By using the ↑ and ↓ keyboard functions and then entering YES. NOTE : ADJUSTMENT FROM THE OPTIMUM SETTING WILL AFFECT THE SPURIOUS LEVELS FROM THE UPCONVERTER.

  • Page 30: Rf Loopback

    POINT OF THE DOWNCONVERTER PATH. 5.5.3 RF Loopback RF loopback is a self validation function. With the addition of a L Band loopback cable and 30 dB attenuator between the Tx output and Rx input operation of the complete chain can be checked. RF loopbk Selecting this feature prompts the user to connect the Tx output to the Rx input with a 30 dB attenuator in the path.

  • Page 31: Log

    If Log (5) is selected from the main menu, the following screen is displayed: LOG: 1: Clear 2: View 3: Print Log Menu See Section 6 for more details. INFORMATION If INFO (6) is selected from the main menu, the following menu is displayed: INFO: 1: View Config 2:Print config 3: This Unit Information Screen...
  • Page 32 Rx Config(2) I/P Freq :1330.000MHz Conv gain:29dB 1st LO:1912MHz 2nd LO:652.000MHz Rx Configuration 1 screen Rx Atten 1:0db Rx Atten 2:0dB ↑ Rx Configuration 2 screen This shows the configuration of the Downconverter path. The top line provides output frequency and power whilst the rest of the information on the screen and on the other screen shows the units internal parameters.

  • Page 33: Memory

    MEMORY The MEMORY function allows the user to store unit configurations and reconfigure from memory. This allows the user to store ten complete configurations for specific satellite transponders and quickly change between them. Selecting MEMORY(7) prompts the user to select either Transmit(1) or Receive(2) memory. Selection of either of these options will change the display and prompt the user to either store the configuration or reconfigure the unit from a previously stored configuration.

  • Page 34: Hard Copy

    PRINTER CONNECTION The P1390 lead, available from Peak Communications, allows the P700 to be connected to the serial port of a Personal Computer. The PC should be set up to emulate a dumb terminal (or a printer). The PC can then capture the log printout onto disk as a permanent record, or act as an interface between the serial port and a parallel printer.

  • Page 35: 1 For 1 Operation

    1 FOR 1 OPERATION THEORY Any two P700s will operate as a 1 FOR 1 redundant pair, with no other equipment except for a single interconnecting lead, two power splitter/combiners and cables to parallel up the units. Both P700s operate continuously, performing their function on the incoming IF and L Band signals, but only one P700 enables its output, and drives the signals to and from the Modem and external Block Up and Downconverters.

  • Page 36: Practical 1 For 1 Implementation

    Detected failure A failure is defined as either a detected failure of the unit, or a catastrophic (power) failure. The P700s will change over if one fails, and if the other unit indicates that it is still operational. If both units fail simultaneously (which is likely to be caused by external circumstances), then no changeover takes place.

  • Page 37: Appendix A : P700 Connector Pinouts

    APPENDIX A : P700 CONNECTOR PINOUTS ALARMS CONNECTOR Connector type : 15 way 'D' type male Important note : N/O means 'normally open' in the non fail state Pinout: Comm Rx unit fault Tx unit fault (1) Tx unit fault (2) Ext Tx Mute Pin 6 active low Ext Tx Alarm...

  • Page 38: For 1 Interface

    Refer to the earlier section on 1 FOR 1 switching for details of 1 FOR 1 operation. A standard 1 FOR 1 lead is available from Peak Communications, part number P1391. The lead is 10 cm long, and is designed for use when two P700s are mounted vertically adjacent to each other in the rack.

  • Page 39: Front Panel Connector

    To connect the serial printer port (DIN plug) to a standard PC serial port (D type female), the following connections are required. (DIN pin 4 to `D' pin 3), (DIN pin 5 to `D' pin 2), and (DIN pin 2 to `D' pin 7). from Peak Communications, A standard test/printer lead is available part number P1390.

  • Page 40: Appendix B : Remote Control

    APPENDIX B : REMOTE CONTROL The P700 may be monitored and controlled remotely either via a five wire RS485 multidrop bus consisting of Data in (A and B lines), Data out (A and B lines) and signal ground, or a three wire RS232 interface consisting of Data in, Data out and signal ground.

  • Page 41: Appendix C : Alarm Fault Action Table

    ALARM FAULT ACTION TABLE The fault table for the P700 is listed overpage. The table shows the effect of each fault, actions are shown as stars in the respective sections of the table. As an example a Tx synthesiser failure ,fault number 12, will cause the output to be muted and be shown in the Log and LCD display as a Tx synthesiser fault.

  • Page 42: Alarm Table

    10.1 Alarm table Fault Description Tx log Mute Unit 1:1 Stat Carr Flt (32) (16) PSU - 5.0 V Q700 PSU + 5.0 V Q700 PSU + 12.0 V Q700 PSU - 5.0 V Q703(TV1) PSU + 5.0 V Q703(TV2) PSU + 15.0 V Q703(TV3) PSU - 5.0 V Q703A(RV1) PSU + 5.0 V Q703A(RV2)

  • Page 43: Appendix D : Intelsat And Eutelsat Frequency Assignments

    INTELSAT AND EUTELSAT FREQUENCY ASSIGNMENTS Introduction This Section is included to show that it is possible to achieve Intelsat and Eutelsat RF frequency assignments using a Modem with an IF synthesiser step size of 22.5 kHz and an Up/Downconverter with a step of 1 MHz.
  • Page 44 IBS traffic, and the diversity of frequency plans used on each. However, every case has been analysed, and there is always an RF converter frequency which will permit the exact RF channel to be obtained. Please call Peak Communications if you require further information. P700.H...
  • Page 45 17/5/1996 C band inversion added SHF D/C operate screen Fuse information added Installation information added Issue 3.0 16/4/1998 Peak Communications Error corrections Aux L band output SHF frequency input External Alarm with 1 for 1 Issue 3.1 28/11/2001 Peak Communications Corrections made.

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