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KWS AMA310/UMS Manual

Head end unit for return channel monitoring
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AMA 310/UMS
Head end unit for return channel monitoring
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  • Page 1 AMA 310/UMS Head end unit for return channel monitoring Manual...

  • Page 2: Table Of Contents

    Table of Contents Table of Contents Chapter 1 Notes on Safety, Usage, Maintenance and Service ............4 Safety Instructions ..........................4 Usage Notes ............................4 Maintenance of the Instrument ......................4 Cleaning of the Instrument ........................5 Calibration ............................5 Service ..............................
  • Page 3 Table of Contents 6.8.3 Displays in the Selective Mode ......................30 6.8.4 Final Remarks ............................ 31 Chapter 7 Analyzer Mode ......................32 Call-Up and Abort of the Analyzer ...................... 33 Cursor ..............................33 Level Display ............................33 Freezing of the Spectrum ........................34 MAX-HOLD Function ..........................
  • Page 4 Revisions Version Reason Chapter V18.0 First Publication V19.0 No changes for derivate AMA 310/UMS V20.0 No changes for derivate AMA 310/UMS V21.0 No changes for derivate AMA 310/UMS Reference Documents This operating instruction refers to the following other documents: • SW 024 Operating Instruction •...

  • Page 5: Chapter 1 Notes On Safety, Usage, Maintenance And Service

    Chapter 1 - Notes on Safety, Usage, Maintenance and Service Chapter 1 Notes on Safety, Usage, Maintenance and Service Safety Instructions This instrument has been built and tested in accordance with EN 61010-1, protective measures for electronic measuring equipment. The instrument has been supplied ex works in a perfectly safe condition.

  • Page 6: Cleaning Of The Instrument

    Chapter 1 - Notes on Safety, Usage, Maintenance and Service Cleaning of the Instrument The casing and the TFT display should be cleaned with a soft, lint-free cloth. Never use solvents such as cellulose thinners, acetone and the like, as otherwise the front foil coating may be damaged.

  • Page 7: Chapter 2 Technical Data

    Chapter 2 - Technical Data Chapter 2 Technical Data FREQUENCY RANGES RC (Return Channel) 4.32 – 65.76 MHz Resolution (RBW) 10 kHz Display Resolution 120 kHz OPERATION Input Illuminated silicone keypad (numeric keypad) Monitor 5.5" TFT, VGA Resolution 640*480) Display Separate LCD for measured values (320*64) User Prompting German and English...
  • Page 8 Connection BNC Socket Output Impedance 75 Ohm Management USB-A V1.1 (Full Speed) Switch Control USB-A KWS proprietary protocol and assignment; Control output to optional cluster switch SW 024 ETHERNET Management (front panel) RJ-45 10Base-T (10 MBit/s) Streaming (rear panel) RJ-45...
  • Page 9 Chapter 2 - Technical Data UPSTREAM MONITORING SYSTEM (UMS) Return channel measurement system (together with appropriate handheld devices VAROS 107) Measurements during active DOCSIS modem service Up to 10 handheld devices connectable Net data rate of DVB transport stream for data transmission between headend device and field devices: <...
  • Page 10 Chapter 2 - Technical Data QUANTITY OF DELIVERY Included in the delivery User Manual USB stick Power Cable 2 pieces clamping angle for 19‘‘ rack mounting 8 pieces M4 x 8 mm crosshead screws AMA 310/UMS V21.0...

  • Page 11: Chapter 3 Operating And Connection Elements, Connection Assignments

    Chapter 3 - Operating and Connection Elements, Connection Assignments Chapter 3 Operating and Connection Elements, Connection Assignments Front Panel Figure 3-1 Front panel Right Side of the Instrument The ventilation slots are on the right side of the instrument. They are positioned in such a way that they will not be covered if the instrument is mounted in a 19"...

  • Page 12: Back Panel

    Chapter 3 - Operating and Connection Elements, Connection Assignments Back Panel Figure 3-2 Back panel USB-A-Interface Pin 1 = Vcc (+5 V) Pin 2 = Data D - Pin 3 = Data D + Pin 4 = GND Figure 3-3 USB-A-interface According to the specification 1.1 the interface works in full speed with a maximum of 12 MBit/s.

  • Page 13: Ethernet (Management- And Streaming-Interface)

    Chapter 3 - Operating and Connection Elements, Connection Assignments Ethernet (Management- and Streaming-Interface) Pin 1 = TXD + Pin 2 = TXD - Pin 3 = RXD + Pin 4 = n. c. Pin 5 = n. c. Pin 6 = RXD - Pin 7 = n.

  • Page 14: Asi-In / -Out

    Control Output to optional Cluster-Switch SW 024 The control output to the optionally available return channel switch SW 024 is designed as USB socket. However, the pin assignment and the protocol used are KWS proprietary. AMA 310/UMS V21.0...

  • Page 15: Chapter 4 Initial Operation

    Chapter 4 - Initial Operation Chapter 4 Initial Operation Mains Operation The mains connection is located on the back panel of the instrument. The measuring receiver is operated by the two-pole mains cable supplied. The instrument has protection class II (protective insulation).

  • Page 16: Assembly With Half A 19" Rack Unit On The Top

    Chapter 4 - Initial Operation 4.2.1 Assembly with Half a 19" Rack Unit on the Top If the clamping angles are mounted as labelled with "right" and "left" when delivered, the half height unit is on the top. Figure 4-2 Clamping angle assembly with half 19" rack unit on the top AMA 310/UMS V21.0...

  • Page 17: Assembly With Half 19" Rack Unit At The Bottom

    Chapter 4 - Initial Operation 4.2.2 Assembly with Half 19" Rack Unit at the Bottom If the clamping angles are interchanged and assembled, the half rack unit is at the bottom, as shown in the graphic below. Figure 4-3 Clamping angle assembly with half 19" rack unit at the bottom Fan Control Two integrated fans supply sufficient ventilation for the electronic components.

  • Page 18: Connection Of The Instrument

    Chapter 4 - Initial Operation Connection of the Instrument For the operation as central unit of the Upstream-Monitoring-System, the instrument has to be connected to the mains supply and also to a receiver for the transport stream data, which serves to send the information to the field units VAROS 107 (see Chapter 6 et seq.).

  • Page 19: Chapter 5 Menu Structure

    Chapter 5 - Menu Structure Chapter 5 Menu Structure The instrument works in a clearly arranged menu structure. The individual menu items are to be selected by so-called soft keys (F1...F5). A menu page may include up to five menu items. In addition, the menu includes further menu pages.

  • Page 20: Navigation In The Menus And Editing Of Parameters

    Chapter 5 - Menu Structure Pressing the key MODE → Figure 5-2 MODE Menu Pressing the key F2 (LANGUAGE) → Figure 5-3 Language Menu Pressing the key F1 (GERMAN) switches the language to German. Navigation in the Menus and Editing of Parameters For navigating in the submenus and for editing the parameters the blue arrow keys (→, ←, ↓, ↑) as well as the numeric keyboard of the instrument are used.

  • Page 21: Editing Of Parameters Via The Numeric Keyboard

    Chapter 5 - Menu Structure 5.1.2 Editing of Parameters via the Numeric Keyboard 5.1.2.1 Numeric Parameters If a parameter is selected, it may be edited via the numeric keyboard. In case of the DS frequency from the example, the key sequence 6 → 3 → 4 → 0 → 0 has to be entered for a frequency of 634 MHz.

  • Page 22: Save Settings

    Chapter 5 - Menu Structure 5.1.3 Save Settings As mentioned above a setting is accepted by pressing the ENTER key. This induces the cursor to jump one position further. Now this parameter can be edited. In this way, it is possible to change from parameter to parameter until all settings have been made.

  • Page 23: Chapter 6 Measuring Mode Ums (Upstream-Monitoring-System)

    (Internet, mobile communication connection, …) is required. Further information can be found in the Application-Note "AN006 – Upstream-Monitoring-System UMS" on www.kws-electronic.de in "SUPPORT" → "Application Notes". Basically the overall measurement functionality is initiated from the field device, during on-going UMS operation virtually no operating steps are required at the AMA 310/UMS.
  • Page 24 Chapter 6 - Measuring Mode UMS (Upstream-Monitoring-System) Figure 6-1 Graphics screen content after starting the UMS measuring mode Now the LC display shows the following information: Figure 6-2 Start display of the LC display after starting the UMS (TS output via IP) The state "Idle"...

  • Page 25: Power Save Mode

    Chapter 6 - Measuring Mode UMS (Upstream-Monitoring-System) Figure 6-4 Start display of the LC display after starting the UMS (TS output via ASI) On the right bottom in the LCD, the current time and the date are shown. Power Save Mode If the saving mode is set (see chapter 8.1.1.3 - Power Save Mode), the graphics screen (together with the LC display illumination and the keyboard illumination) switches off automatically after a short time.

  • Page 26: Keyboard Lock

    This ranging is performed on one of the four TILT carriers (see also Chapter 8.1.5.3 - TILT Measurement). On the other hand the narrow-band signals may Can be found on the KWS homepage: www.kws-electronic.de →...

  • Page 27: Max-Hold-Function In The Spectrum

    Chapter 6 - Measuring Mode UMS (Upstream-Monitoring-System) be telemetry commands from field instruments, for example if a field instrument wants to change from the passive measuring mode into an exclusive access to the headend, e.g. for a frequency sweep. Ranging Peak Telemetry Figure 6-8 Ranging and telemetry signals in the return path spectrum 6.6.3...

  • Page 28: Mer/Ber Measurement And Quickcheck

    Chapter 6 - Measuring Mode UMS (Upstream-Monitoring-System) 6.6.5 MER/BER Measurement and Quickcheck The LC display here shows the status "BER-Measurem." as well as the storage place number within the UMS settings (here: 3) and the serial number (here: 61317) of the field instrument performing the quality measurement: Figure 6-11 LC display during MER/BER measurement by a field instrument Apart from all parameters defined above the display continues to show:...

  • Page 29: Report Generation By A Field Instrument

    Chapter 6 - Measuring Mode UMS (Upstream-Monitoring-System) settings (see Chapter 8.1.5.3 - TILT Measurement), can be seen. The following two figures show both display screens as an example. Figure 6-13 LC display during TILT measurement by a field instrument Figure 6-14 Graphics display during TILT measurement by a field instrument 6.6.7 Report Generation by a Field Instrument The field instruments can generate an automated report (protocol) as specified by the headend.

  • Page 30: Operation With Optional Cluster-Switch Sw 024

    Display of meta data within the transport stream (TS-Info) • MAX-HOLD function • Frequency sweep • MER/BER measurement and Quickcheck • Line-up assistance and TILT measurement • Report / protocol generation Can be found on the KWS homepage: www.kws-electronic.de → Support → Application Notes AMA 310/UMS V21.0...

  • Page 31: Displays In The Summary Mode

    Chapter 6 - Measuring Mode UMS (Upstream-Monitoring-System) After switch-on and if no field instrument is actively measuring in the system, the summary mode is active by default. 6.8.2 Displays in the Summary Mode The displays during measurements in the summary mode correspond to the displays shown in the preceding chapters.

  • Page 32: Final Remarks

    Chapter 6 - Measuring Mode UMS (Upstream-Monitoring-System) Figure 6-18 LC display during a frequency sweep by a field instrument at switch input 4 Figure 6-19 LC display during MER/BER measurement by a field instrument at switch input 4 Figure 6-20 LC display during TILT measurement by a field instrument at switch input 4 Figure 6-21 Graphics display during TILT measurement by a field instrument at switch input 4 6.8.4 Final Remarks...

  • Page 33: Chapter 7 Analyzer Mode

    Chapter 7 - Analyzer Mode Chapter 7 Analyzer Mode The AMA 310/UMS headend device may also be used as a "stand-alone" spectrum analyzer for the return path range. For the return path frequency range the spectrum analyzer may be selected from the basic state of the AMA 310/UMS.

  • Page 34: Call-Up And Abort Of The Analyzer

    Please take more detailed information from the Application Note AN005 - Spectrum Analysis. You can find it on our homepage www.kws-electronic.de → Support → Application Notes. Figure 7-3 Level measurement of a sinusoidal carrier with approx. 60 dBµV in the analyzer...

  • Page 35: Freezing Of The Spectrum

    Chapter 7 - Analyzer Mode Figure 7-4 Level measurement of a 6.4-MHz-QAM-carrier with approx. 60 dBµV in the analyzer Freezing of the Spectrum By selecting FREEZE the current spectrum can be freezed. In this state, the menu item FREEZE is shown inverted.

  • Page 36: Reference Line

    Chapter 7 - Analyzer Mode Figure 7-6 Graphics display of the spectrum with activated MAX-HOLD function Reference Line In all figures above a horizontal dotted line in red lettering "ref" can be seen. This is the level reference preset in the UMS settings (see Chapter 8.1.3 - Network Settings) which should correspond to the nominal input level of the CMTS.
  • Page 37 Chapter 7 - Analyzer Mode Figure 7-7 Graphics and LC display of the analyzer at a reference level of 75 dBµV The attenuation selected automatically by the measuring instrument can be manipulated by the menu item ATTEN. in 5-dB steps. -5dB reduces the input attenuation of the instrument, +5dB increases it.
  • Page 38 Chapter 7 - Analyzer Mode Figure 7-9 Analyzer: Reference level = 75 dBµV; attenuation = 10 dB Figure 7-10 Analyzer: Reference level = 75 dBµV; attenuation = 5 dB AMA 310/UMS V21.0...

  • Page 39: Operation With Optional Cluster-Switch Sw 024

    SW 024, as here the noise of all 24 input channels is added up at the RF input of the AMA 310/UM. Can be found on the KWS homepage: www.kws-electronic.de →...
  • Page 40 Chapter 7 - Analyzer Mode Figure 7-12 Analyzer operation with switch SW 024: summary path By the menu item SWITCHMATR (F4 key, see Figure 7-2) it is possible to switch between the inputs of the RF switch and the summary signal generation. Figure 7-13 Analyzer operation with switch SW 024: input selection The alias names shown here for the switch inputs can be configured.
  • Page 41 Chapter 7 - Analyzer Mode If the menu item SWITCHMATR is selected without connecting a RF switch, the following error message appears: Figure 7-15 Input selection in analyzer operation with switch SW 024 without connected switch AMA 310/UMS V21.0...

  • Page 42: Chapter 8 Ums Configuration

    Chapter 8 - UMS Configuration Chapter 8 UMS Configuration Settings Headend Device Before initial operation of the UMS, some settings have to be made at the headend. The menu for the basic settings can be called up via UMS SETUP from the basic state of the AMA 310/UMS.

  • Page 43: Transport Stream Settings

    Chapter 8 - UMS Configuration receiver have set. This made selecting menu item TSoIP CONF → DEST IPADR. The input behind the ":" corresponds to the destination port: Figure 8-1 Input of the destination IP address and port for the TS streaming interface - Unicast and Multicast UDP or UDP/RTP packets can be transmitted via a point-to-point connection (Unicast) or a point- to-multipoint connection (Multicast).

  • Page 44: Network Settings

    Chapter 8 - UMS Configuration 8.1.3 Network Settings By selecting the menu item NET an input window can be called up in which some settings regarding the cable network can be made. 16 characters each can be used for the network name (NetName) and the name of the clusters (ClustName).

  • Page 45: Modem Upstreams

    Chapter 8 - UMS Configuration 8.1.5.1 Modem Upstreams As the UMS operates when the DOCSIS modems are running, there must by no means be collisions with the upstream frequencies of the cable modems. Therefore, the UMS has to know on which upstream frequencies and with which bandwidth (symbol rate) the cable modems transmit in the network.

  • Page 46: Cluster Differentiation When Using The Rf Switch Sw 024

    Chapter 8 - UMS Configuration entering the frequency 0 a test carrier can be deleted from the system. Up to 24 DS channels can be defined. Digital channels with 64- and 256-QAM with EuroDOCSIS, US-DOCSIS or DVB-C modulation can be set. The symbol rates with DOCSIS are given by the standard, with DVB-C 6111 kSymb/s, 6875 kSymb/s and 6900 kSymb/s are possible.
  • Page 47 Chapter 8 - UMS Configuration Figure 8-2 Input of free text categories in the headend unit - page 1 Figure 8-3 Input of free text categories in the headend unit - page 2 These five categories shown above will then be displayed exactly like that on the field instrument and can then be filled with information by the technician (see the next figures).
  • Page 48 Chapter 8 - UMS Configuration Figure 8-5 VAROS 107 report menu page 2 - free text categories 3 to 5 After preparing the report an *.XML-File is generated, as mentioned. This can be opened and edited with standard spreadsheets. The file includes several workbooks with different measurements.
  • Page 49 Chapter 8 - UMS Configuration Figure 8-7 Report workbook "WOBBEL" with manually prepared frequency sweep curve AMA 310/UMS V21.0...

  • Page 50: System Plan

    Chapter 8 - UMS Configuration System Plan For supporting the input of the varied frequencies in the return path range the instrument provides a graphic representation of the system where all frequencies involved in the system are shown with their bandwidths. This graphics always appears when a frequency in the system is changed or added (see chapter 8.1.5 - Profiles).
  • Page 51 Chapter 8 - UMS Configuration Figure 8-9 System plan profile 2 when configuring the BER measurement with overlapping The height of the frequency bars does not say anything, it just serves for better differentiation. The width of the bars corresponds to the bandwidth used (symbol rate). The active modem frequencies are shown in light blue in the system plan.

  • Page 52: Chapter 9 Instrument Management

    Chapter 9 - Instrument Management Chapter 9 Instrument Management By selecting MODE the following menu can be called up in the basic state: Figure 9-1 MODE menu This menu consists of several pages and you can scroll between them by using >>> and <<<. By selecting BACK you get back to the previous menu level.

  • Page 53: Software Update Device Firmware

    MODE → FIRMWARE → ADVANCED a submenu can be called up listing the components, which can be programmed with the current device status. The update process is comparable to the software update of the device firmware. More detailed information can be gathered from the KWS service department and/or the internet page www.kws-electronic.de.

  • Page 54: Serial Number

    Chapter 9 - Instrument Management Serial Number Additionally to the printed serial number on the type plate on the back of the device, the serial number of the measurement receiver can be retrieved from a menu. This is done by MODE → SERIALNUM.. Figure 9-5 Query of the Serial Number By pressing the ENTER key the INFO window can be closed again.

  • Page 55: Factory Setting

    Chapter 9 - Instrument Management If no cluster switch is connected to the AMA 310/UMS the note "not plugged!" is given behind the item "SWITCH-MATRIX"! Factory Setting Via MODE → PRESET all non-volatile device settings can be reset to the factory setting. For this purpose the key ←...

  • Page 56: Formatting The Internal Flash Disk

    Chapter 9 - Instrument Management Note! If the power save mode is activated (see Chapter 8.1.1.3) the keyboard illumination is switched off while the return path monitoring is active despite the explicit activation in the above shown menu. "Chapter 6.3 - Power Save Mode"...

  • Page 57: Chapter 10 Output On File

    Chapter 10 - Output on File Chapter 10 Output on File The operating system of the measuring receiver supports the file system FAT32. In certain operating conditions this permits to save copies from the LC display and from the graphics screen as .BMP file for documentary purposes. The bitmap format works in an uncompressed way, i.e.

  • Page 58: Setting The Standard Drive

    Chapter 10 - Output on File By selecting FLASHDISK or USB-STICK the storage destination medium is provided. As soon as the file name has been completely edited, the cursor may be moved to the START field by pressing ENTER. After activating the ENTER key once more the content of the graphics display (and possibly that of the LC display in addition) will be written into a .BMP-file with the name entered before.

  • Page 59: Remove Bmp Files

    Chapter 10 - Output on File Figure 10-3 Directory FLASHDISK 10.4.1 Remove BMP Files When the directory is open, it is possible to move the cursor to the desired file name by pressing the keys ↑ and/or ↓ . By pressing the ENTER key the following choice appears. Figure 10-4 Deletion of a .BMP file in the directory FLASHDISK By the keys ←...

  • Page 60: Chapter 11 List Of Figures

    Chapter 11 - List of Figures Chapter 11 List of Figures Figure 3-1 Front panel ..........................10 Figure 3-2 Back panel ..........................11 Figure 3-3 USB-A-interface ........................11 Figure 3-4 Ethernet (management- and streaming-interface) ..............12 Figure 3-5 ASI input and output ....................... 13 Figure 4-1 Assembly of 19'' installation angle ..................
  • Page 61 Chapter 11 - List of Figures Figure 8-5 VAROS 107 report menu page 2 - free text categories 3 to 5 ..........47 Figure 8-6 Report workbook "Common“ with filled-in free text fields ............47 Figure 8-7 Report workbook "WOBBEL" with manually prepared frequency sweep curve ..... 48 Figure 8-8 System plan profile 2 when configuring the BER measurement without errors .....
  • Page 62 83109 Großkarolinenfeld about our products, solutions and services? Phone 00 49 .(0) 80 67 .90 37-0 KWS Electronic is at your disposal with expert Fax 00 49 .(0) 80 67 .90 37-99 advice. Call us or send us an e-mail.

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