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Wavetek 3HRV Operation Manual

Headend reverse sweep receiver
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OPERATION MANUAL
MODEL 3HRV
HEADEND REVERSE
SWEEP RECEIVER
This document contains information proprietary to
Wavetek. The information in this document
is not to be used or duplicated in any manner without
the prior approval, in writing, of Wavetek.
Wavetek
Wavetek
Wavetek
Wavetek
Wavetek
CATV Division
5808 Churchman Bypass
Indianapolis, IN 46203-6109
(800)851-1198
(317)788-5960
Fax: (317)782-4607
E-Mail: catvsupport@wavetek.com
Internet: http://www.wavetek.com
11/96 Rev. A
Manual Part No.
6510-00-0300

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  • Page 1 MODEL 3HRV HEADEND REVERSE SWEEP RECEIVER This document contains information proprietary to Wavetek. The information in this document is not to be used or duplicated in any manner without the prior approval, in writing, of Wavetek. Wavetek Wavetek Wavetek Wavetek Wavetek...
  • Page 2 This warranty is not transferrable and does not apply to used or demonstration products. The obligation of Wavetek arising from a Warranty claim shall be limited to repairing, or at its option, replacing without charge, any assembly or component (except batteries) which in Wavetek’s sole opinion proves to be defective within the scope of the Warranty.

  • Page 3: Table Of Contents

    Contents SECTION 1 - GENERAL INFORMATION 1.1 INTRODUCTION ..............1-1 1.2 SPECIFICATIONS ............. 1-2 1.2.1 Frequency ..............1-2 1.2.2 Level Measurement ........... 1-2 1.2.3 Hum Measurement ............. 1-3 1.2.4 Carrier to Noise Measurement ........1-3 1.2.5 Telemetry ..............1-4 1.2.6 Transmitter ..............1-4 1.2.7 Spectrum Mode ............
  • Page 4 3.2.4 Arrow Keys ..............3-4 3.2.5 Alpha-Numeric Entry Keys ........3-5 3.2.6 Printing ................ 3-6 SECTION 4 - OPERATION - HOW TO USE THE 3HRV HEADEND REVERSE SWEEP RECEIVER 4.1 INTRODUCTION ............. 4-1 4.1.1 Wavetek Stealth Reverse Sweep Concept ....4-1 4.1.2 Basic Reverse Sweep Procedure ......
  • Page 5 4.7 HOW TO MEASURE C/N ..........4-43 4.8 HOW TO MEASURE HUM ..........4-45 4.9 MODULATION ..............4-46 4.10 SPECTRUM ANALYZER MODE ........ 4-47 4.11 SWEEP MODE ..............4-52 4.12 FILE ..................4-54 4.12.1 How to Store/View/Delete Measurement Files ... 4-54 4.13 AUTO .................

  • Page 6: Section 1 General Information

    10 different technicians on the same cluster of nodes. The addition of the 3HRV to the Wavetek Sweep System takes the responsibility of the reverse sweep away from the 3ST. This serves to speed up the reverse sweep rate.

  • Page 7: Specifications

    The 3HRV is a standard 19" rack mount unit, that weighs approxi- mately fifteen pounds. Its 320 X 240 dot matrix LCD shows measure- ment data in both graphical and numerical form.

  • Page 8: Hum Measurement

    Digital Average Power Option Accuracy: +1.8 dB at 25°C 1.2.3 Hum Measurement (carrier > 0 dBmV) Non-scrambled channels only Range: 0 to 10% Resolution: <0.2% Accuracy: +0.7% 1.2.4 Carrier to Noise Measurement Non-scrambled channels only. No preselection required for 78 channels at +10 dBmV input level.

  • Page 9: Telemetry

    1.2.5 Telemetry Frequency: User defined, 5 to 1,000 MHz Modulation: FSK, 100 kHz deviation Spectrum Required: 1 MHz recommended 1.2.6 Transmitter Frequency Range: 5 to 1,000 MHz Level Range: +20 to +50 dBmV; settable in 2 dB increments Spectral Purity: Hars -30 dBc;...

  • Page 10: Intermodulation Distortion

    1.2.8 Intermodulation Distortion CSO / CTB Characteristics Out of Measurement Range Video Signal Level (dBmV) *Typical Specifications Range: 60 dB maximum Resolution: 1 dB 1.2.9 Depth of Modulation Assumes presence of white reference on any VITS line. Non- scrambled channels only. Range: 80 to 100% Resolution:...

  • Page 11: Powering

    Dimensions: 3HRV: 48.3 cm (W) x 13.3 cm (H) x 35.6 cm (D), 19" (W) x 5.25" (H) x 14" (D) Weight: 3HRV: 6.8 kg (15 lbs.) Operating Temperature Range: 0 to +50°C; 32 to 122°F 1.2.12 Powering Frequency 47 to 63 Hz ~ 100 VA Input Current: 1.2A @ 100 VAC.
  • Page 12 SBC-1 Charger for one spare Stealth Battery Cartridge SBC-6 Charger for up to six spare Stealth Battery Cartridges 1217-50-0151 Stealth Serial Printer Cable PP-75 Precision Preselector for Carrier-To-Noise and Intermodulation Distortion Testing (55 to 440 MHz) PP-55-110 Tunable Precision Preselector (55 to 110 MHz) PP-110-220 Tunable Precision Preselector (110 to 220 MHz) PP-220-440...

  • Page 13: Section 2 Installation

    International Customers, contact your local Wavetek Representative. 2.3 INSTALLATION Proper installation of the 3HRV is essential to correct operation of the system. The 3HRV is typically installed in a headend rack. There are two different recommendations for setting up the system. One entails...

  • Page 14: Warranty Information

    For example, if a telemetry signal level of +16 dBmV is desired on the system and the output of the 3HRV is set to +36 dBmV, a directional coupler value of 20 dB may be used, or the combination of a lower value directional coupler and an attenuator pad.

  • Page 15: Power Requirements

    2.5 POWER REQUIREMENTS The 3HRV operates on 90-265 VAC, 57-63 Hz single phase input power source. 2.6 CABLE SPECIFICATIONS There are two cables associated with the operation of the 3HRV; Stealth to Stealth, and a Serial Printer cable. The following informa- tion describes each of the associated cables.
  • Page 16 Serial Printer Cable The Serial Printer Cable, (1217-50-0151) can be used to print data directly from the 3HRV.

  • Page 17: Technical Support

    2.7 TECHNICAL SUPPORT We've worked hard to make the 3HRV as easy-to-use as possible. However, if you have a problem using your unit you can contact Wavetek's Technical Support for help. You can reach Wavetek's Technical Support, Monday through Friday between 8 am and 5 PM at (317) 788-5960.

  • Page 18: Section 3 User Interface

    SECTION 3 USER INTERFACE 3.1 INTRODUCTION This section will help you become familiar with the front-panel controls of the Model 3HRV. Included are descriptions of the front- panel and notes on the use of features. 3.2 FRONT-PANEL DESCRIPTION The hardware portion of the user interface consists of a 320x240 dot matrix LCD and a 40-key keypad.

  • Page 19: Measurement Mode Selection Keys

    3.2.2 Measurement Mode Selection Keys Measurement modes are chosen by pressing the appropriate Mea- surement Mode Selection key. There is a key for each of the eight major measurement functions. These keys are located directly below the display. LEVEL: Signal level measurements on individual channels are made by entering a specific channel number and pressing the channel key.

  • Page 20: Support Mode Selection Keys

    SCAN: Use the Scan mode to get a good look at absolute carrier levels. In this mode a bar graph showing all carrier levels is displayed. SWEEP: This mode monitors the signals injected into vacant spectrum areas by the 3SRVs. Also, through telemetry transmits to the field current condition of noise and ingress to any 3SRV Receivers that are connected to the system.

  • Page 21: Arrow Keys

    Allows the user to access measurement files. File: Auto: This function provides automated FCC 24 hour testing capabilities. Setup: The setup functions are used to set or adjust the operating parameters of the unit. Print: Allows the user to print the current measurement screen. 3.2.4 Arrow Keys The four Arrow keys are used for various purposes.

  • Page 22: Alpha-Numeric Entry Keys

    3.2.5 Alpha-Numeric Entry Keys The Alpha-Numeric keys are used to enter data as needed during the operation of the unit. There are three indicators associated with keypad entry. These indicators appear in the title bar to the left of the time. The three are as follows: C - alpha entry mode 3 - numeric entry mode - multiple choice mode...

  • Page 23: Printing

    Numeric Entry Mode In the numeric entry mode, only the numerals 0 through 9 and the decimal point can be entered. When negative values are allowed, the FCN, +/- key sequence toggles between positive and negative entry. The numeric value may also be incremented and decremented using the UP and DOWN arrow keys.

  • Page 24: Section 4 - Operation - How To Use The 3Hrv

    The headend reverse sweep receiver (3HRV) is set up to receive the reverse sweep sent from the field. When a reverse sweep is activated from a field test point, the 3HRV receives the telemetry signal that indicates which receiver is sending the sweep.

  • Page 25: Interfacing With Different Network Architectures

    4.1.3 Interfacing With Different Network Architectures Single Cable - Split Band Network The Model 3HRV is connected in the headend as shown in figure 1. The connections are similar to those made for forward sweep, with the monitor output connected to the combining network. This allows the 3SRV to receive telemetry signal from the 3HRV.
  • Page 26 Another common architecture, which is only slightly different from those described above, prescribes the use of fiber optics to "nodes". In these architectures the installation of the 3HRV in the headend is as shown in figure 3. The connection at the node may be as shown in figure 4.
  • Page 27 Figure 3. Transmitter Connections In Headend For Hybrid Fiber/Coax Networks Figure 4. Fiber Node Test Point Connections Dual Cable Network Another possible, though rare, network configuration is the "Dual Cable Network", in which a full bandwidth is used for both forward and reverse - essentially two cable systems overlaying each other with signals carried in opposite directions.

  • Page 28: How To Setup Your 3Hrv

    4.2 HOW TO SETUP YOUR 3HRV 4.2.1 HOW TO SETUP FOR REVERSE SWEEPING To setup the Reverse Sweep on the 3HRV, press the SETUP key and select the “Reverse” option from the Setup menu. The Reverse Sweep setup screen will appear.
  • Page 29 Forward Telemetry Level This is the level of the carrier that the 3HRV uses to transmit telemetry data. Use the edit box to set the Telemetry Level to an appropriate value. When adjusting the Telemetry Level, take into consideration the following losses;...
  • Page 30 Reverse Sweep Plans Reverse Sweep Plans are used to define the frequencies at which sweep points will be inserted by 3SRV units with the Reverse Sweep option. To access Reverse Sweep Plans, select the “Reverse Sweep Plans” option and then press the ENTER key. Selecting a Reverse Sweep Plan The Reverse Sweep Plan screen presents a list of all Reverse Sweep Plans stored in memory.
  • Page 31 Next, enter the Start Frequency. This will be the frequency of the first sweep point in the plan. Use the numeric keys followed by the ENTER key. Then press the OK soft key to continue.
  • Page 32 The Interval is entered next. This interval determines the spacing between sweep points. Use the numeric keys followed by the ENTER key. Then press the OK soft key to continue. Finally, you are asked to enter the Stop Frequency. There will be no sweep points generated beyond the Stop Frequency.
  • Page 33 Sweep points are generated beginning at the Start Frequency and continuing until the Stop Frequency is reached. The frequency of each point is calculated by adding the Step Interval to the frequency of the previous point. After it has been created, the new plan will appear in the Reverse Sweep Plan list.
  • Page 34 This screen shows a list of sweep points contained within the se- lected Reverse Sweep Plan. The list consists of the sweep point number followed by the frequency of the sweep point. Use the up and down arrows to scroll through the list. Note that the frequency of the selected sweep point also appears in the edit box below the list.

  • Page 35: How To Setup For Measurement Modes

    4.2.2 How to Setup for Measurement Modes The following procedure describes the steps to prepare the 3HRV for measurement modes. Building A Channel Plan 1. To build a channel plan, first enter the setup mode by pressing the SETUP key.

  • Page 36: Setup

    4.3 SETUP There are four setup modes for the 3HRV; General, Measurements, Channel Plan, and Reverse Sweep. General setup allows the operator to configure general aspects of the unit (not specifically related to measurements) for personal taste.

  • Page 37: General Setup

    4.3.1 General Setup Use the Up and Down soft keys to scroll to additional setup items. When lists are being displayed, the up arrow soft key dims when the first item in the list is reached and the down arrow soft key dims upon reaching the last item.
  • Page 38 Operator Name Allows the user to enter the operators name. The name will appear in the header section of the Auto Test report. Contrast Level Adjusts the contrast level of the LCD for optimum viewing by the operator. The level is varied on a scale from 1-15. Use the UP and DOWN arrow keys to adjust the contrast.
  • Page 39 Baud Rate The Baud rate is used when establishing communications between the 3HRV and another device. The Baud rates available are; 1200, 2400, 4800, 9600, and 19.2k. The UP and DOWN arrow keys are used to set the Baud rate.
  • Page 40 Diagnostics Note: If the Diagnostics selection does not appear on the screen, keep pressing the Down arrow soft key until it scrolls onto the list. Press the ENTER key to enter the diagnostic mode. The diagnostic mode allows the user to perform the following functions: Default to Factory Settings When this item is selected and the ENTER key is pressed, the unit will automatically set all parameters to the factory default values.

  • Page 41: Measurement Setup

    Warning: Subscriber interference could result, if the frequency is set to a local carrier frequency. • Sweep Telemetry On/Off - When turned on, will modulate the CW signal similar to the telemetry signal. 4.3.2 Measurements Setup Temperature Unit Use the UP and DOWN arrow keys to select the desired temperature units (°C, °F).

  • Page 42: How To Setup Your Channel Plan

    OK soft key to perform the calibration. The unit will display the system noise level when the calibration is complete. 4.3.3 How To Setup Your Channel Plan The procedure explained in Section 4.2.2 should be performed when first using the Model 3HRV. 4-19...
  • Page 43 Select Channel Plan Press the ENTER key to call up a list of existing channel plans. If the unit is being used for the first time, the only Channel Plan available will be the standard NCTA plan. Refer to the "Build Channel Plan" section to create a channel plan that matches your system.
  • Page 44 This sequence allows the user to create a channel plan by "learning" the channels on a cable system. NOTE: Ensure that the 3HRV is connected to the cable system. Step 1: Enter a name for the new channel plan that will be built.

  • Page 45: How To Edit Channel Parameters

    4.3.4 How To Edit Channel Parameters This setup feature allows the user to edit an existing channel plan. Press the ENTER key to initiate channel plan editing. A list of all channels contained within the active plan is presented. Use the UP or DOWN arrow keys to select the channel that you wish to edit.
  • Page 46 Press the Edit soft key to view and edit the following parameters: Note: If the parameter that you wish to edit does not appear on the screen, keep pressing the arrow soft key to scroll through the list. Enabled Y/N - If the channel is not enabled it will not be included in any measurement modes.
  • Page 47 Channel Number The channel number of the carrier. Enter channel number by using the numeric entry keys or the arrow keys. Label The label is provided to associate a channel's number with it's programming. Using the alpha keys, label the channel with a desired name (up to four characters).
  • Page 48 Tilt Channel Y/N - Designates which channels are used for the Tilt mode. Up to nine channels can be designated as Tilt channels. Scrambled Y/N - Select Yes if the channel is scrambled. When a channel is designated as scrambled, the sweep will only look at the video carrier as a sweep reference, instead of both the video and audio carrier.
  • Page 49 Use the Up and Down arrow soft keys to cursor to a channel. Use the C/N, HUM, and MOD soft keys to select the desired Auto Test measurements. Note: C/N, Hum, and Modulation cannot be measured on a scrambled channel or a sweep point. Hum and Modulation cannot be measured on a Digital type carrier.
  • Page 50 Edit Limits The Edit Limits function works in conjunction with the performance of an Auto Test. As the Auto Test measurements are made, the values are compared to the above limits. Use the Up and Down arrow soft keys to select the limit to be edited. Use the numeric entry keys or the UP and DOWN arrow keys to enter a value.

  • Page 51: Reverse Sweep

    4.3.5 Reverse Sweep 4-28...
  • Page 52 Forward Telemetry Level This is the level of the carrier that the 3HRV uses to transmit telemetry data. Use the edit box to set the Telemetry Level to an appropriate value. When adjusting the Telemetry Level, take into consideration the following losses;...
  • Page 53 IMPORTANT: The frequency the reverse telemetry carrier should be carefully selected such that it will not interfere with any existing carriers on the reverse plant. Reverse Sweep Plans Reverse Sweep Plans are used to define the frequencies at which sweep points will be inserted by 3SRV units with the Reverse Sweep option.
  • Page 54 Creating a New Reverse Sweep Plan Press the New soft key to create a new Reverse Sweep Plan. You will be asked to enter a name for the plan that you are creating. Use the alphanumeric keys followed by the ENTER key. Then press the OK soft key to continue.
  • Page 55 The Interval is entered next. This interval determines the spacing between sweep points. Use the numeric keys followed by the ENTER key. Then press the OK soft key to continue. Finally, you are asked to enter the Stop Frequency. There will be no sweep points generated beyond the Stop Frequency.
  • Page 56 Sweep points are generated beginning at the Start Frequency and continuing until the Stop Frequency is reached. The frequency of each point is calculated by adding the Step Interval to the frequency of the previous point. After it has been created, the new plan will appear in the Reverse Sweep Plan list.

  • Page 57: Editing A Reverse Sweep Plan

    4.3.6 Editing a Reverse Sweep Plan If desired, the selected Reverse Sweep Plan can be viewed and modified. IMPORTANT: You should verify that none of the sweep points contained within the Reverse Sweep Plan will interfere with existing carriers on the reverse plant. Press the Edit soft key to display the following screen: This screen shows a list of sweep points contained within the se- lected Reverse Sweep Plan.

  • Page 58: How To Perform Level Measurements

    Press the Add soft key to insert a new sweep point into the plan. The new point will be at the same frequency as the point that was selected when the Add soft key was pressed. You will need to set the new point to the desired frequency using the edit box.
  • Page 59 Information displayed in the Level mode is as follows: Label (up to four characters) Scrambled Channel Type: TV Channel Single Number Dual (0-999) Freq. Mode • Channel number or frequency • Channel label • Video carrier frequency and level (numerical) •...

  • Page 60: How To Measure Tilt-Balancing An Amplifier

    Scale Adjustment The UP and DOWN arrow keys can be used to adjust the reference level on the analog meter. This is helpful when the audio and video levels differ by large amounts. To automatically scale the analog meter, press the FCN key followed by the Scale second function key.
  • Page 61 Information displayed in the Tilt mode is as follows: • High and low carrier frequencies • High and low carrier levels • Tilt measurement • Reference level and scale • Selected channel plan • Test point compensation (appears only if a nonzero value is programmed during setup) When the TILT key is pressed the screen will automatically display up to nine video carrier levels that were defined in the Edit Channel...

  • Page 62: Scan Mode

    To adjust the Ref Level, press the Ref Level soft key. Now the Ref Level can be changed by using the UP and DOWN arrow keys or by entering a numeric value followed by the ENTER key. The refer- ence level is at the top of the graph. NOTE: The reference value is limited by unit and the scale setting.
  • Page 63 • Histogram graph of carrier levels • Delta between audio and video levels • Selected channel plan • Test point compensation (appears only if a nonzero value is programmed during setup) • Limits annunciators When the SCAN key is pressed a graph showing all carrier levels is displayed.
  • Page 64 Press the TILT soft key to turn tilt compensation on or off. Tilt channels must be programmed in the Channel Plan Edit mode, before this function can be implemented. The tilt is based on the levels of the highest and lowest channels configured for tilt. When turned on, the compensation value can be adjusted using the UP and DOWN arrow keys or by entering a numeric value followed by the ENTER key.
  • Page 65 When an out of tolerance condition exists a set of annunciators will appear below the scan graph. The annunciators indicate the following out of tolerance conditions: • Adjacent Channel Error • Video Level Too High/Low • ∆VA Too High/Low The limit annunciators are updated with each scan update. An "aggregate"...

  • Page 66: How To Measure C/N

    4.7 HOW TO MEASURE C/N It is a good engineering practice to use a bandpass filter on the input of the receiver when making C/N measurements. This is to ensure accuracy and extend measurement range. If a preamplifier is used to boost test point levels prior to measurement, it should be placed between the bandpass filter and the receiver.
  • Page 67 Information displayed in the C/N mode is as follows: • Channel number • Channel label • Carrier frequency • Noise offset frequency • Noise frequency • Bandwidth • C/N ratio • Channel plan To make a carrier to noise measurement, press the C/N key. The C/N ratio of the tuned channel or frequency will be displayed.

  • Page 68: How To Measure Hum

    4.8 HOW TO MEASURE HUM Hum is undesirable modulation of the television video carrier by power line frequencies and harmonics (e.g., 60 or 120 Hz), or other low frequency disturbances (FCC limit: < 3%). To measure Hum, simply press the Hum key when tuned to any non-scrambled chan- nel.

  • Page 69: Modulation

    NOTE: HUM measurements taken while the desktop charger is in use will affect the HUM reading. For the most accurate reading disconnect the charger prior to taking HUM measurements. 4.9 MODULATION This function allows you to monitor the video depth of modulation in graphical and precise numerical format.

  • Page 70: Spectrum Analyzer Mode

    4.10 SPECTRUM ANALYZER MODE The spectrum analyzer display provides a view of the system spectrum with variable spans from 50 MHz to 3 MHz and a dynamic range of better than 60 dB. When the Spectrum key is pressed, the following screen is displayed.
  • Page 71 Level Adjustments A LVL (level) soft key is used to adjust the vertical parameters of the graph. These parameters include Max Hold, Ref Level and Scale. The Max Hold function ensures that the highest signal over multiple sweeps is displayed. When the Max Hold soft key is pressed, as indicated in the left hand corner of the display, the highest signal level is displayed.
  • Page 72 How To Make FCC In-Channel Response Measurements (FCC limit: , + 2 dB) The frequency response of any channel can be measured using the spectrum analyzer mode. A flat signal source must be inserted at the input of the modulator or processor. In testing a modulator this source may be a full field multiburst signal, or a sweeping function generator.
  • Page 73 Press the OK soft key once the carrier has been turned off. The CSO/CTB measurement is now displayed. 4-50...
  • Page 74 The light trace represents the carrier prior to it being turned off. The dark trace represents the distortion products. The measurement value is computed by a ratio of the peak level of the video carrier to the peak of the distortion products of the second and third order beats.

  • Page 75: Sweep Mode

    The number of active users accessing return sweep information is indicated by the number of icons displayed below the level information. The 3HRV can handle up to 10 differ- ent technicians on the same cluster of nodes.
  • Page 76 Frequency Adjustments The FRQ (frequency) soft key is used to set the start and stop frequency (for the display only). A start and stop soft key is displayed to select the parameter to be changed. The frequency is varied by using the cursor keys or a specific value can be entered using the numeric keys followed by the ENTER key.

  • Page 77: File

    The scale parameter (1,2,5, & 10 dB/Div) can only be adjusted with the cursor keys. For example, if the reference level was set at 2 dB and the scale was set at 5 dB/div the first horizontal grid line above the center would be equal to 7 dB.

  • Page 78: Auto

    To view measurement files, press the Measurement Files soft key. A listing of all currently stored measurement files is displayed. Use the UP and DOWN arrow keys to select the file to be viewed. Once selected, press the View soft key. Scan measurements can be stored, but can only be viewed/printed using the Stealthware Data Analysis software.

  • Page 79: How To Create/Edit/Delete Test Locations

    4.13.1 How To Create/Edit/Delete Test Locations Test Locations allow the user to create specific test point location parameters used in the Auto Test report. The Test Locations can be created directly on the Stealth unit, or using the SteathWare Data Analysis software and downloaded to the Stealth unit.
  • Page 80 Press the New soft key to create a new Test Location file. The unit will then prompt for a file name. Once a name is entered, press the OK soft key to execute the operation. 4-57...
  • Page 81 Each location in the list has an associated type and values for the descriptive parameters. The parameters are shown in the following table. Parameter Default Units 1 Area 15 column alpha numeric field 2 Amp Id 15 column alpha numeric field 3 Power Configuration IN / OUT / THROUGH 4 Feeder Maker Config...

  • Page 82: How To Perform An Auto Test

    Characteristic Trunk Head Extender Fiber Field 1 Area 2 Amp Id 3 Power Configuration yes 4 Feeder Maker Config yes 5 Trunk Termination 6 Voltage Setting 7 Rev Pad 8 Rev Equalizer 9 Fwd Pad 10 Fwd Equalizer Editing of location files is done by pressing the Edit soft key. The optional fields will be enabled or disabled according to the location type selected (see table above).
  • Page 83 Auto Test Location Using the Up and Down arrow keys, select an Auto Test location. Select NONE if location information is not desired. Press the OK soft key when completed. To create a new Auto Test location, press the New soft key. Auto Test Characteristics 4-60...
  • Page 84 Use Up and Down arrow soft keys to scroll through the location characteristics for the test being performed. Press the ENTER key after each parameter is entered to update the display. If changes are made and you want them updated in the location file, press the Save soft key.
  • Page 85 Voltage Measurements Use the numeric entry keys to enter the following system voltage measurements: • AC Voltage • DC Voltage (regulated) • DC Voltage (unregulated) The voltage measurements are printed in the Auto Test report. Press the OK soft key when completed. 4-62...
  • Page 86 Test Point Compensation Test Point Compensation is used to account for loses associated with certain amplifiers. Use the UP and DOWN arrow keys or the numeric entry keys to enter the Test Point Compensation. (-100.0 to +100.0 dB in 0.1 dB steps). Press the OK soft key when the desired value has been entered.
  • Page 87 Results File Enter a file name for the Auto Test results to be stored. If an existing file name is used, a warning message will appear prompting the user to overwrite the existing file or create a new one. When the desired file name has been entered, press the OK soft key to proceed with the Auto Test.
  • Page 88 While the Auto Test is in progress, the measurement currently being performed (i.e. Level, C/N, Hum, or Modulation) is indicated on the screen. A bar graph showing the percentage of completion is dis- played. Scheduled If the Scheduled mode is selected, the start, stop, and interval information must be entered prior to commencing the Auto Test.
  • Page 89 Using the numeric entry keys, enter the start and stop information for the date and time as well as the interval amount. Press the ENTER key after each parameter is entered to update the display. Use the Up and Down arrow soft keys to select the parameter to be entered. Press the OK soft key to commence the Schedule Auto Test.

  • Page 90: Viewing/Printing Auto Test Files

    4.13.3 Viewing/Printing Auto Test Files Upon completion of the Auto Test, the unit will enter the Auto Test Results Mode to display the Auto Test files. This allows the user to view or print the Auto Test results. Use the Up and Down arrow soft keys to select a file, then press the View soft key.
  • Page 91 Information provided on each interval includes: • Interval number • Date measurement was made • Time measurement was made • Temperature • Pass/Fail test results An "X" in the Pass/Fail column indicates an overall failure of the measurements taken during that interval. A check mark indicates that all measurements were within the specified limits.
  • Page 92 ------------------------------------------------------------------------- WAVETEK STEALTH 24 HOUR TEST REPORT Model: 3HRV Serial No: 1234567 Cal Date: 06/21/95 ------------------------------------------------------------------------- Operator: JOHN File: PROOF1 ------------------------------------------------------------------------- Location Name: 1028_ELM_ST Location Type: Trunk Test Point Type: Forward Trunk In Test Point Compensation: +0.0 dB ------------------------------------------------------------------------- Area:...
  • Page 93 The channels with the asterisks indicate those channels that ex- ceeded the Max Delta Adjacent Channels limit. The limits that the readings were compared to, are printed at the bottom of the report. To the right of the limits, the report displays each interval that failed the specific limit.
  • Page 94 When viewing the list of C/N, Hum, and Modulation measurements, the following symbols will replace the measurement value if an error occurred: • UNDER - under range • OVER over range • ERROR - synthesizer unlocked The Print soft key can be used to print out the following report: 4-71...
  • Page 95 ------------------------------------------------------------------------- WAVETEK STEALTH AUTO TEST REPORT Model: 3HRV Serial No: 1234567 Cal Date: 06/21/95 ------------------------------------------------------------------------- Operator: JOHN File: PROOF1 Inverval: 1 Date: 07/20/95 Time: 15:18:09 Temp: 75 F ------------------------------------------------------------------------- Location Name: 1028_ELM_ST Location Type: Trunk Test Point Type: Forward Trunk In Test Point Compensation: +0.0 dB...

  • Page 96: Status

    4.14 STATUS To view the Status screen, press the FCN key followed by the Status second function key. The Status screen provides unit information to the user. An important feature is the amount of memory currently being used. This allows the user to decide if unwanted files should to be deleted to make more memory available for newer files.

  • Page 97: Appendix A: Status Indicators

    INTRODUCTION There are numerous status indicators/icons displayed on the Stealth 3HRV. The following is a list of all status indicators/icons and an explanation of each. The status indicators are displayed in the title bar as shown in the example below.

  • Page 98: Appendix B User Messages

    APPENDIX B USER MESSAGES INTRODUCTION There are numerous user messages that will appear on the unit. Some messages can be caused by improper operation or unit malfunc- tion. The following list provides an explanation of the condition that caused the message to appear, followed by the suggested response: Message ERROR...
  • Page 99 Message ERROR... Insufficient signal level to perform the measurement! Condition A minimum carrier level is required for C/N and HUM measurements. Response Choose another channel or frequency with greater than the minimum level. Message SORRY... This is an illegal name and cannot be used.
  • Page 100 Message ERROR... The selected reference has been corrupted! Condition The reference cannot be used because of a non-volatile memory failure. Response Delete the corrupted reference and select another. Message SORRY... Not enough sweeps have occurred to store an accurate reference. Please allow more time in SWEEP.
  • Page 101 Message SORRY... There is not enough memory to store a new file! Condition Memory is currently at maximum capacity. Response Delete unwanted files to make more memory available. Message WARNING... The selected sweep file will be deleted! Condition A sweep file is about to be deleted. Response Press OK to delete.
  • Page 102 cancel. Message SORRY... The active plan cannot be deleted! Condition An attempt to delete the active channel plan. Response Select a different plan as the active plan, then delete the desired plan. Message ERROR... This plan is corrupted and cannot be used! Condition The plan cannot be used because...
  • Page 103 Response Press OK to delete, STOP to cancel. Message SORRY... The last channel cannot be deleted! Condition An attemp was made to delete the last channel of a plan. Response A channel plan must contain at least one channel. If desired, delete the entire plan.
  • Page 104 Response Press OK to reset settings, STOP to cancel. Message ERROR... C/N cannot be measured on a scrambled channel! Condition A channel that has been programmed as scrambled in setup has been selected in C/N mode. Response Select a channel that is not scrambled.

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