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Harris SigmaPLUS Technical Manual

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T.M. No. 888-2430-001
© Copyright HARRIS CORPORATION
1997, 1998 All rights reserved
TECHNICAL MANUAL
SigmaPLUS™ IOT Transmitters
I
Introduction
II
Installation & Checkout
III
Operation
IV
Theory of Operation
V
Maintenance & Alignments
V I
Troubleshooting
VII
Parts List
VIII Subsections
12-07-98

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  • Page 1 TECHNICAL MANUAL SigmaPLUS™ IOT Transmitters Introduction Installation & Checkout Operation Theory of Operation Maintenance & Alignments Troubleshooting Parts List VIII Subsections T.M. No. 888-2430-001 12-07-98 © Copyright HARRIS CORPORATION 1997, 1998 All rights reserved...

  • Page 2: Returns And Exchanges

    (217/222-7041) or a TELEX service (650/372-2976). Replaceable Parts Service Replacement parts are available 24 hours a day, seven days a week from the HARRIS Service Parts Department. Telephone 217/222-8200 to contact the service parts department or address correspondence to Service Parts Department, HARRIS CORPORATION, Broadcast Division, P.O. Box 4290, Quincy, Illinois 62305-4290, USA.
  • Page 3 The installation, operation, maintenance and service of this equipment involves risks both to personnel and equipment, and must be performed only by qualified personnel exercising due care. HARRIS CORPORATION shall not be responsible for injury or damage resulting from improper procedures or from the use of improperly trained or inexperienced personnel performing such tasks.
  • Page 4 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 5 FIRST-AID Personnel engaged in the installation, operation, maintenance or servicing of this equipment are urged to become familiar with first-aid theory and practices. The following information is not intended to be complete first-aid procedures, it is a brief and is only to be used as a reference. It is the duty of all personnel using the equipment to be prepared to give adequate Emergency First Aid and thereby prevent avoidable loss of life.

  • Page 6: Table Of Contents

    System Control Panel ......1-4 SigmaPLUS Checkout Procedures ....2-13 Amplifier Control (Single Amplifier Configuration) .
  • Page 7 I/C Sound Modulator ..... . . 2-24 Digital Pot ....... . . 4-2 Aural/Visual Corrector Level (Common System Interface Panel .
  • Page 8 Detector Offset Null......5-8 Correction System For SigmaPlus ™ IOT Transmitter . . 4-24 Samplers and Pulse Generators ....5-8 Theory of Operation: Contactor and Circuit Breaker Sound 1 Bandpass Filter .
  • Page 9 Signal Pre-correction Adjustments (Common Mode) . . . 5-18 Section VII Linearity and differential gain....5-18 Parts List ICPM and Diff Phase......5-18 Appendix A Group delay .
  • Page 10 Start Up Procedure ......d-4 Measuring the Temperature......e-1 Glycol Cooling System.

  • Page 11: Section I

    A separate drawing package for the above transmitter and This section is the general description for the transmitter internal assemblies is supplied by Harris. Harris will also supply separate technical manuals for the Exciter Transmitter Cabinets 1.2.1 and IPA systems (schematic drawings for the Exciter and IPA The SigmaPLUS™...
  • Page 12 SigmaPLUS+ Figure 1-2. Single IOT Block Diagram 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 13 Section I - Introduction Figure 1-3. Multiple IOT Block Diagram 888-2430-001 WARNING: Disconnect primary power prior to servicing.

  • Page 14: Beam Supplies

    SigmaPLUS+ exciter/control cabinet and two or more power amplifier cabinets inhibitors for the system. For warm climates an optional closed for parallel power amplifier cabinets, depending on power level loop water system is available. Resistive test loads will be pro- and configuration.

  • Page 15: Amplifier Control (Single Amplifier Configuration)

    Section I - Introduction power metering circuits are also provided for combined reflected Normal Status Indicators are Green LEDs and indication is power and for up to 5 Reject Load circuits (to accommodate the provided for AC PRESENT, INTERNAL INTERLOCK, CAV- largest transmitter configuration).

  • Page 16: Rf Corrector

    SigmaPLUS+ Modulator is routed to the Aural and Visual Corrector for com- the Class A/B output stages. This provides dynamic correction mon mode amplification. for Average Picture Level (APL) variations. The I/C Sound Modulator assembly frequency modulates the The driver and output stages use a Motorola bipolar transistor combination of all baseband aural signals applied to the module which is capable of 150 W peak of sync per device.

  • Page 17: Klystrode Assembly

    Section I - Introduction • IOT Crowbar Assembly 1.2.14 Air cooling pipe • RF input cable • WARNING Output feeder • Reflected Power probe THE IOT CROWBAR ASSEMBLY RESIDES AT A HIGH VOLTAGE • Umbilical feed for HV cables POTENTIAL IN THE ORDER OF -35KV WITH RESPECT TO •...

  • Page 18: Size/Weight/Power Consumption

    SigmaPLUS+ MHz) and aural carriers at 41.25 and 41.00 MHz (nomi- Size/Weight/Power Consumption nally). Refer to Table 1-1. b. Circuitry to force the conversion gain of the previously-de- For power consumption data refer to the applicable AC Distribu- scribed circuitry (a) to unity gain, via the use of a servo tion schematic.
  • Page 19 Section I - Introduction Table 1-1. Shipping Weights and Measurements ITEM Net Weight Gross Weight Size Control Cubicle 362.44 499.46 106 x 84 x 208 41.7 x 33.1 x 81.9 Rear P.A. Cubicle 623.22 795.6 171 x 83 x 208 67.3 x 32.7 x 81.9 Front P.A.

  • Page 20: Installation And Check Out

    This section provides the information and instructions necessary lation materials (plumbing materials, wire, conduit and for the installation of the HARRIS SigmaPLUS Series TELEVI- accessories, loose hardware, etc.). Each piece of equip- SION TRANSMITTER. Guidelines in the form of installation ment should be inspected for shipping damage.

  • Page 21: Equipment Inventory And Placement

    SigmaPLUS™ Equipment Inventory and Placement 2.4.1 aged separately from the transmitter cabinets and will be rolled into the dry beam supply upon assembly. To remove from the Inventory the shipment using the packing check list received truck, a forklift can be used (winching the equipment to the rear from the carrier.

  • Page 22: Packing Check List

    Section II - Installation & Checkout Cardboard cartons should be opened with the carton in the proper e. Place Exciter/Control Cabinets, Amp Cabinets, Beam Sup- position (note “UP” arrows on carton). Parts inside are wrapped plies, RF System, LCC and Heat Exchangers, Pump Mod- and extreme care must be taken when unwrapping these parts so ule and Optional AVR per site plan.

  • Page 23: Klystrode Uncrating And Assembly

    SigmaPLUS™ Transmitter Transmission Line Height Adjustment CAUTION 2.5.8 a. Install the top half of the RF Breakaway/Harmonic filter THE IOT WEIGHS APPROXIMATELY 22 kg/50 lbs BY ITSELF; 86 kg/190 lbs WHEN THE WEIGHT OF THE SHIPPING FRAME IS assembly in the cabinet. An adjustable clamping bracket INCLUDED.
  • Page 24 Section II - Installation & Checkout Figure 2-1. Line Lengths for Phasing - Multi-Tube 11/30/1998 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 25 SigmaPLUS™ Figure 2-2. Line Lengths for Phasing - Multi-Tube 888-2430-001 11/30/1998 WARNING: Disconnect primary power prior to servicing.

  • Page 26: Rf System/Diplexer Placement

    Figure 2-3 Silver Solder 1/16 inch diameter, 30%-45%, Hard Stay-Silv Dual Square Tee Section on Saw Horses #45, Aladdin #45, HARRIS part number 099 0002 238 Paste flux (Engelhard Ultra-Flux 1 lb jar) HARRIS part number 099 0002 241 (HARRIS part number 086 0004 040, 16 oz bottle)
  • Page 27 SigmaPLUS™ Figure 2-5 Transmission Line Lateral Adjustment Figure 2-6. Transmission Line Vertical Support Adjustment 888-2430-001 11/30/1998 WARNING: Disconnect primary power prior to servicing.
  • Page 28 Section II - Installation & Checkout Figure 2-7 RF Breakaway Section Operation Figure 2-8. Probe Installation RF Breakaway Section Operation 11/30/1998 888-2430-001 WARNING: Disconnect primary power prior to servicing.

  • Page 29: Preparation For Installing Interconnecting Transmis

    The typical station layout drawing Soft silver solder (96.5% tin; 3.5% silver) such as Aladdin #450 (HARRIS part number 086 0004 038; three 1 lb rolls shows one method of proper installation of the transmission line.

  • Page 30: Crowbar Assembly Installation

    Section II - Installation & Checkout Crowbar Assembly Installation 2.6.7 CI X4 10 Way Klippon- Right side next to IPA CI X6 BNC-AM wire 0475 to Bulkhead BNC Jack center The crowbar assembly mounts horizontally on the rear right hand into in the IOT HV Cubicle wall of the High Voltage cubicle.
  • Page 31 SigmaPLUS™ Table 2-4. System Control Panel Links System Control Panel links: * Denotes Link Selection Link Select Function * a-b Solid LED if status equals selection. (Both LEDs flash if not equal) Solid LED from status and selection. Solid LED indicating only when status equals selection.

  • Page 32: Signal Interconnects

    Tuner/Klystrode RF input connection. X1-5 to X1-4 X1-5 to X2-1 PSU-2 X1-5 to X2-2 X1-5 to X2-3 SigmaPLUS Checkout Procedures X1-5 to X2-4 In performing the Transmitter checkout procedure the process Turn On Control Cabinet and Measure: X2-9 -24 VDC...

  • Page 33: Rf System/Mode Controller Checkout

    SigmaPLUS™ Power Supply Units for proper input voltage selection. WARNING (110/220 VAC) DO NOT TURN ON BEAM SUPPLY ISOLATOR SWITCH c. Apply primary power (110/220 VAC) to Control Cabinet if used in the System. e. Ensure phase sensor in HVPSU is Illuminated, if not d.

  • Page 34: System Checkout

    Section II - Installation & Checkout 3. 480/380 VAC input BX1-3 & 1 m. Test connector interlock circuit by removing each connec- tor on appropriate printed circuit boards and interconnec- 4. 380 VAC input BX1-4 & 5 tions to ensure all are operational. (See Table 2-12) 5.

  • Page 35: Logic Supplies

    SigmaPLUS™ e. Ensure all amplifier cabinet circuit breakers are switched b. Beam Supply Shorting Switch to Off. c. Beam Tap switch cover f. On the Line Control Cabinet turn on Circuit Breakers Q2 d. RF system mode switches Cabinet Power and Q3 Control.

  • Page 36: Collector Current Calibration/Overload

    Section II - Installation & Checkout g. Reset Lockout and Fault LED circuit to open circuit. 2.8.4.9 Collector Current Calibration/Overload a. Set cavity blower overload relay K1 to 2.5 Amps. • Combined Amplification trip 2.5A. b. Set the motor overload breaker to auto and remove the •...

  • Page 37: Cavity Arc

    SigmaPLUS™ • detector per circuit assembly and it is connected to the IOT 80 mA • Primary Cavity Arc circuit. Klystrode 120mA a. Remove the cover on the isolated supply. 2.8.4.16 3 Shot Overloads b. Connect a 1 kohm 20 watt Resistor between Grid Current meter - ‘...

  • Page 38: Crowbar Protection Part A

    Section II - Installation & Checkout Table 2-9. Digital and Analogue Interface Links Digital & Analogue Interface links: * = normal position a-b Sound notch out b-c Sound notch in a-b Link for Go Home remote O/P latching enabled b-c Link for Go Home remote O/P latching disabled a-b Link for Reject Power remote O/P latching enabled b-c Link for Reject Power remote O/P latching disabled Link to defeat panel I/L...
  • Page 39 SigmaPLUS™ Table 2-10. Logic & Control PCB Links Logic links: Link for black-heat Link for background heat Link for lockout O/P latching disabled Link for lockout O/P latching enabled Link for Go Home not AND with ready Link for Go Home to AND with ready...
  • Page 40 Section II - Installation & Checkout Table 2-11. Logic and Control Switches CAUTION FIT ISOLATED SUPPLIES COVER BEFORE PROCEEDING. j. For the Klystrode adjust the heater voltage such that the Logic switches: Transmitter current is the same as that specified in the CPI/EIMAC test S3 and S4 (120 sec) Switch on 1,2,3 &...

  • Page 41: Bias Current

    SigmaPLUS™ NOTE Table 2-13. EEV Minimum Coolant Flow Rates distilled glycol/mix distilled glycol mix 30 kW Body 4 LPM/1.1 GPM 8 LPM/2 GPM Collector 25 LPM/8 GPM 30 LPM/8.5 GPM 40 kW Body 4 LPM/1.1 GPM 8 LPM/2 GPM Collector...

  • Page 42: Ipa Forward Power

    Section II - Installation & Checkout c. Tune as per EEV tuning procedure. See EEV Tube assem- bly manual. 2.8.4.29 Tube Tuning a. Apply a low power sweep of 1.0 mW to the IPA input (cable 310). b. Care must be taken when the IPA input threshold is reached as the IPA appears to suddenly take off due to AGC action.

  • Page 43: Harmonic Generator

    SigmaPLUS™ 2.8.5.3 Harmonic Generator 2.8.5.7 Aural/Visual Corrector Level (Common Mode Ampli- fication) a. Set Harmonic Generator V2 Bias voltage to -4.2 VDC with R-9. a. Measure output of aural visual corrector on EX9 with just vision IF black level connected to EX1.

  • Page 44: Local Oscillator Distribution Amplifier

    Section II - Installation & Checkout NOTE d. Ensure SELECT switch selects exciter A and B as operated THIS PROCEDURE ASSUMES THAT THE IOT HAS and that the appropriate On Air’ LED is lit, in both local BEEN COURSE TUNED AND THAT THE TRANSMITTER and remote modes.

  • Page 45: Rf Corrector Power Control

    SigmaPLUS™ b. Adjust R42 so that the leading edge of the pulse is lagging Table 2-16. Distribution Amp Attenuators the trailing edge of the sync pulse by 1 to 1.5 usec.(Nor- mally fully counter-clockwise) c. When the correct timing has been achieved turn R19 fully DA attenuators: counter-clockwise.

  • Page 46: Linearity And Differential Gain

    Section II - Installation & Checkout 2.8.6.5 Group delay g. Adjustments can also be made to the IOT input tuning and Any group delay errors can be removed by careful adjustment of match. the three stages in the differential phase and intercarrier noise h.

  • Page 47: System Power Monitoring Setting Up Proce

    SigmaPLUS™ To observe and correct the aural phase cross modulation the c. The RF Power Meter should read approximately -23 dBm. demodulator is tuned and set up in the normal mode and the aural Disconnect the RF Power Meter from Link terminal 1 and deviation output (this output does not have aural de-emphasis) reconnect IF INPUT Link 1 - 2.
  • Page 48 Section II - Installation & Checkout Sound 1 Bandpass Filter 2.8.6.8.8 c. Trigger the oscilloscope with external sync. Refer to the response curves, illustrated on Figure 5-3, 5-4 or d. Observe the waveform as follows: 5-5. Select the appropriate curve for your system. a.

  • Page 49: System Output Power Meter Calibration

    SigmaPLUS™ Ballast Load 2.8.6.8.13 2.8.7.2 Minumizing Reject Load Power (Multiple Tube Sys- • tems) Connect a UHF RF source of 20 mW into X6. Check that the ballast load power meter drive on X1 pin 7 is 4 V. If a.

  • Page 50: Remote Control Interface

    250-0111-000 Cable 8 Cond 22 AWG *,** Remote Control Interface 2.9.1 The following kits will be required to interface the DC-128 to the SigmaPLUS transmitter. They may be purchased either through Harris or your local electronics supplier. Figure 2-12. Sound Signal Level Test Setup 11/30/1998...
  • Page 51 SigmaPLUS™ Table 2-18. PC-128 Interface Table 2-21. PC-128 Interface RX9 Commands: AMP CABINET RX5 STATUS: AMP CABINET pulsed relay status input BK HEAT pulsed relay BK HEAT status input STANDBY pulsed relay STANDBY status input BEAM pulsed relay BEAM status input...
  • Page 52 Section II - Installation & Checkout Table 2-22. PC-128 Interface Table 2-24 RX6 STATUS: AMP CABINET EX4 EXCITER SWITCHER COMMANDS: IPA POWER SUPPLY COMMAND RELAY TYPE 20-27 COMMON IPA POWER NORMAL MANUAL SELECT 1/2 OF LATCHING RF POWER NORMAL RELAY CROWBAR READY AUTO SELECT 1/2 OF LATCHING...
  • Page 53 SigmaPLUS™ Table 2-26. PC-128 Interface Table 2-28. PC-128 Interface SX1 RF SYSTEM CONTROL: SX10 STATUS: RF SYSTEM V1 + V2 pulsed relay MODE 1 (A + B) status input V1 ONLY pulsed relay MODE 2 status input V2 ONLY pulsed relay...
  • Page 54 Section II - Installation & Checkout Table 2-30. PC-128 Interface Table 2-33. PC-128 Interface BX6 COMMAND: SYSTEM CONTROL CABINET CX6 STATUS: SYSTEM CONTROL CABINET AURAL RAISE (DIPLEX ONLY) BEAM status STANDBY status BK HEAT BK HEAT status STANDBY status BEAM LOCAL status RESET...
  • Page 55 SigmaPLUS™ Table 2-35 Mode Controller (2 Transmitter System) Control Selection V1+V2 Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7 Pole 1 of Pole 2 of Pole 3 of Pole 4of Pole 5of Pole 6of...
  • Page 56 Section II - Installation & Checkout Table 2-36. Mode Control (2 Transmitter System + Standby) Control Selection V1 + V2 Designation Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7 Pole 1 Pole 2 Pole 3 Pole 4 Pole 5 Pole 6...
  • Page 57 SigmaPLUS™ Table 2-37. Mode Controller (2 Transmitter System + Emergency IPA mode) Control Selection EMERGENCY MODES V1+V2 V1 IPA 1,2 IPA1 IPA2 Designation Mode 1 Mode Mode 3 Mode 4 Mode Mode Mode 7 TO Pole 1 Pole 2 Pole 3...
  • Page 58 Section II - Installation & Checkout Table 2-38. Mode Controller (3 Transmitter System) Control Selection V1 + V2 + V3 V1 + V2 V1 + V3 V2 + V3 Designation Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7 Pole 1...
  • Page 59 SigmaPLUS™ Table 2-39. Mode Controller (4 Transmitter System) Control Selection V1+V2+V3+V4 V1+V2 V3+V4 Designation Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7 Pole 1 Pole 2 Pole 3 Pole 4 Pole 5 Pole 6...
  • Page 60 Section II - Installation & Checkout Table 2-40 Sigma Installation Kit 4-1/16" Line Systems Harris Part Number Descrption 358-2160-000 P1000T) SLOTTED CHANNEL, 1-5/8" SQ 20FT 358-2179-000 HTHR037) 3/8"-16 THREADED ROD 10’ 358-2202-000 HRCN037) 3/8"-16 COUPLER NUT 358-1131-000 P1008) 3/8"-16 SPRING NUT 358-2188-000 P2863) FLAT PLATE FITTING FOR 3/8"...
  • Page 61 SigmaPLUS™ Table 2-41 Sigma Installation Kit 6-1/8" Line System CP1 CP2 CP3 CP4 Harris Part Number Description 358-2160-000 P1000T) SLOTTED CHANNEL, 1-5/8" SQ 20FT 358-2179-000 HTHR037) 3/8"-16 THREADED ROD 10’ 358-2202-000 HRCN037) 3/8"-16 COUPLER NUT 358-1131-000 P1008) 3/8"-16 SPRING NUT 358-2188-000 P2863) FLAT PLATE FITTING FOR 3/8"...

  • Page 62: Operators Guide

    Section III Operators Guide CAUTION ual (Peak and Black) power metering. Also indicated by LEDs are normal amplifier operational status as well as fault status and HAZARDOUS RF POTENTIALS ARE PRESENT ON FLEXIBLE CO- operational amplifier status. AXIAL CABLES LOCATED IN THE VICINITY OF THE INTERME- DIATE POWER AMPLIFIER ASSEMBLY.

  • Page 63: Hand Held Ipa Diagnostics Box

    to read Beam volts, Beam current, Grid volts, Grid current, Ion Reflected Power 2; Monitor Power Amp 2A/2B VSWR current, Heater volts and Body current. Peak Power 1; Monitor Power Amp 1A/1B Fwd Power Peak Power 2; Monitor Power Amp 2A/2B Fwd Power Hand Held IPA Diagnostics Box 3.2.2 Collector Current 1;...
  • Page 64 Table 3-1 Amplifier Controls and Indications Amplifier Controls: LOCAL Tactile push switch with indicating LED with associated battery backed latching and battery failure default to local on power up. Used to control local, remote or system operation - selects whether control is local from panel or remote via external inputs.
  • Page 65 Table 3-1 Amplifier Controls (continued) Fault Status Indicators (Red LEDs (continued)) Foldback Active VSWR is exceeded by 1.2 to 1 and output power is being reduced. Lockout The 3-4 shot counter has expired without the amplifier remaining on for a period of 30 seconds or cabinet temperature is high or the collector temperature is high.
  • Page 66 Table 3-3 Auto Changeover Control Control (Exciter) Cabinet Local Enables local front panel control. Remote Enables remote control of the changeover unit. Auto Selects automatic selection of exciter output. Unit monitors the summary fault status LEDs to select appropriate to air. Manual Allows operation of the changeover unit front panel exciter selector switch.
  • Page 67 Crowbar Cavity Ion Pump Cabinet Control Exciter 1 Exciter 2 Focus Filament Blowers & Bias Fans Blower Heater Focus Adjust Figure 3-4. Circuit Breaker Front Panel 888-2430-001 WARNING: Disconnect primary power prior to servicing...
  • Page 68 Primary Secondary Cavity Arc Cavity Arc Test Test 100V Right Side View Under Current Trip Adjust Over Current Trip Adjust 100V Secondary Cavity Arc Test Primary Cavity Arc Test Figure 3-5. Circuit Breaker Assembly Tray - Top View Test Points and Controls 888-2430-001 WARNING: Disconnect primary power prior to servicing...
  • Page 69 Figure 3-6. IPA Hand Held Diagnostics Box 888-2430-001 WARNING: Disconnect primary power prior to servicing...

  • Page 70: Daily Turn On

    3.4 Daily Turn On 3.5 Daily Turn Off a. Depress Standby command. a. Depress OFF. After 5 minutes cool down, system will automatically shut down turning off blowers and pumps. b.Wait for Standby timer to energise. Allow 5 minutes for transmitter to warm up.This will be indicated by ‘Ready’...

  • Page 71: Theory Of Operation

    Section IV Theory of Operation Control Cabinet (Used only in multi- trigger A34 for input into the system power circuitry detailed on Sht 5. Local/Remote selection is accomplished through a front ple tube Configurations) panel contact closure to VCC which is routed via retriggerable Each transmitter is provided with a Control Cabinet.

  • Page 72: Meter Selection

    SigmaPLUS™ VSWR, and Reject Load summary fault inputs I33-39 are ap- This in turn generates the CLOCK 3 output to drive the power plied to line drivers A15 and A16 to, in turn, illuminate the control output detailed on sht 6. AND gate A18, NOR gate A20, appropriate system fault LED.

  • Page 73: Exciter/External Inputs

    Section IV - Theory of Operation 4.1.2.2 Exciter/External Inputs Load the Mode Controller will also issue Standby commands, Refer to Schematic Dwg 839 8121 125 Sht. 5 monitor amplifier status change and re-apply Beam command once the switch has reach its appropriate end stop. Exciter status inputs are routed from the associated Exciter/ex- citer Change-over unit via control cabinet cable harness to X22 (Refer to schematic 839 8121 169 Mode Controller Functional...

  • Page 74: Drive And Tally Select

    SigmaPLUS™ 4.2.1.5 Status I/P Matrix output drives the A/B select input of the quad 2- input multiplex- Refer to Sht. 2,3 of dwg 839 8121 161, and Table 2-32 ers A14, A13, A12. The Waveguide System /Output Switch Status inputs are fed into The selected quad 2-input multiplexer (A14, A13, A12) output the Mode Controller via opto-isolators A24, A25, A26.

  • Page 75: Auto Changeover Assembly General Description

    Section IV - Theory of Operation it in turn outputs a 1 into AND gates A60C, A69C. Next establish The Auto Changeover Unit consists of two basic assemblies a normal interlock condition via X15/5,6. This input is a logic 0 housed as one unit located between Exciter A and Exciter B in and is routed to A68B inverting Schmitt trigger.

  • Page 76: Rf Fault Detection

    SigmaPLUS™ 4.3.1.2 RF Fault Detection System Power Metering The exciter’s output is sampled and the sample detected by V10 A power meter in the System cabinet may be switched to read: V16. The detected output is in turn fed to a buffer amplifier •...

  • Page 77: Detailed Theory

    Section IV - Theory of Operation 4.5.2.2 Second Frequency Conversion Circuitry f. Separation of the aural carrier frequencies by filtering so After the original spectrum has been converted to the first-IF, at that their amplitudes may be measured using op-amp based mixer A30, it is again converted to an even lower frequency envelope detectors second-IF by mixer A35.

  • Page 78: Third Conversion Circuitry (To Provide Low Frequency Aural Carriers)

    SigmaPLUS™ feedback resistor R91 to R92 plus R93. The sample-hold circuit A18, diodes V12C, V12D, and A17. The aural carrier #2 output also inverts the polarity of the measured value. The voltage isthen is then applied to connector X3-4,10. Potentiometer R122 is used applied to A39.

  • Page 79: Technical Data

    Section IV - Theory of Operation The crystal oscillator circuit includes a lock detector which is o. Diplexer Load. used in conjunction with a search oscillator circuit to enable Down Converter locking between the oscillator and the input IF. The Local Oscillator input is fed to the mixer, A1 at pins 1 and 2 at a level of approximately 7 dBm, while the RF input at a level A Trip Supply circuit is also located on the Output Power Meter of approximately +13 dBm is fed via a 30 dB fixed attenuator,...
  • Page 80 SigmaPLUS™ The amplified output of the quadrature phase detector is filtered variable monostable A10B which supplies a negative going by A7A to confine the bandwidth of the double sideband portion output adjustable between 0.5 us and 1.5 us duration. of the IF input. The output of A7A is fed via the buffer A7B to A11A generates the 3 us black level sampling pulse after being the input of the integrator.

  • Page 81: Amplifier Control

    Section IV - Theory of Operation meter drive amplifiers A19B. Meter calibration is provided by Mixer Inputs Mixer Outputs (kHz) R195. System (MHz) Sound 1 Sound 2 Loc. Osc Sound 1 Sound 2 Ballast Load A sample of the ballast load power from the vision-sound com- B,G (IRT) 5.75 biner is fed to X6.

  • Page 82: Fault Indications

    SigmaPLUS™ Reset button. A non-volatile memory retains fault indications in the absence of the mains supply. If the transmitter has shut down due to a fault, other than a motor failure, a red Lockout LED will light until the logic is reset either by the Fault Reset button or remotely.

  • Page 83: Sigma™ Unitized High Voltage Beam Power Supply

    Section IV - Theory of Operation transmitter cabinet power supplies, and transmitter cabinet fans Access is easy; and there is no danger of tools falling to the and blowers is distributed and controlled in the cabinet. bottom of the oil tank because tools aren’t needed to remove the submersed components module.

  • Page 84: Theory Of Operation: Isolated Supplies Pcb

    SigmaPLUS™ 2. EXCITER RACK - a transformer input single phase Rheostat R2a/b is then adjusted to provide correct heater voltage switched mode unit serving the Exciters and system for the IOT. control functions for a dual Exciter System, paralleled The Secondary of T2 applies a stepdown voltage of 8.9 VAC to supplies are provided.

  • Page 85: Bias Volts Proving Circuit

    Section IV - Theory of Operation Crowbar Construction The variable 30-150 VDC output is then applied to an active 4.12.1 crowbar circuit which comprise V39,V34 and FS3. The crowbar The crowbar assembly consists of a base plate at earth potential is designed to limit output current during a short circuit on the to which the isolation transformer is fixed.

  • Page 86: Fdu/Thyratron Interface Pcb

    SigmaPLUS™ its timing components selected such that it produces a negative These circuit are shown on the front page of the schematic as pulse of 1.5 ms nominal. A1B provides an inhibit pulse to prevent subassemblies of the schematic and are referenced by page the pulse generator from being fired more frequently than once number.

  • Page 87: Ipa Power Normal

    Section IV - Theory of Operation Cavity Air Normal 4.13.2.3 IPA Power Normal 4.13.3.1.6 The serial data stream from the IPA module is fed to the Interface The Cavity Air Normal indication comes in via opto isolator PCB via X29 a SMC coaxial socket and is then fed into retrig- A39D and is then buffered by inverter A37F before being fed to gerable monostable A35A.

  • Page 88: Open Collector Outputs

    SigmaPLUS™ HV Current Metering 4.13.3.1.26 The Amplifier Normal indication comes in via opto isolator This input from the high voltage current meter shunt is filtered A41C and is then buffered by inverter A37D. by L5, L6, R258, R259 and C56 before being amplified in Reject Power 4.13.3.1.19...

  • Page 89: Digital And Analog Interface Pcb

    Section IV - Theory of Operation (Lockout) can be either by moving X28. The same is true for T38 Logic and Control PCB 4.14 (Amplifier normal) with X12 and T39 (Reject power) with X13. (Refer to Sch. 817 2336 172 Sht.1-15) Digital and Analog Interface PCB 4.13.4 Remote Controls...

  • Page 90: Cavity Cooling Timer

    SigmaPLUS™ in A65 to the required count. When the counters have reached then inverted in A4F to provide a high when the count signals are their designated count the output from A65 goes low, and if the equal. A low on the output of A36 will inhibit any further counts second input on A64A is also low, then the collector cooling will by being AND’ed with the clock in A43A.

  • Page 91: Contactor Drivers

    Section IV - Theory of Operation latch A81B is AND’ed in A76A and fed to A85A in order to to any other control state. AND gate A90B produces a high signal enable the clock for the 30 second counter. The other input to to fire the shunt trip via A86 when the transmitter is not on Beam A85A is controlled from the output of comparator A82 which is and C25 is charged and the /Q output from A90B is high.

  • Page 92: Iot Logic Link Positions

    SigmaPLUS™ IOT logic link positions 4.14.4 Internal interlock H1 Link settings. Black heat *a-b Cavity arc 2. 3 shot Standby b-c Cavity arc 2. single shot Transmit *a-b Cavity arc 1. 3 shot Remote/local b-c Cavity arc 1. single shot Thyratron ready *a-b Reflected power.

  • Page 93: Theory Of Operation: Iot Rf Corrector Pcb

    Section IV - Theory of Operation Power Control Loop Amplifier Theory Of Operation: IOT RF Cor- 4.15.2 4.15 A6b and components R16,R18,R50,C13 and C36 form the loop rector PCB amplifier V21 and R51 ensure that the output at V21 cathode can only go positive relative to ground.

  • Page 94: Signal Present Detector

    Residual differential gain and luminance non-linearity re- ward Correction maining after I/P correction is corrected on the visual IF For superior efficiency, the SigmaPlus IPA module is operated carrier. in class A/B operation. This is particularly important for high e.

  • Page 95: Power Distribution

    A1-10. The contactor will then be actuated via BAX7/1- SigmaPlus Interface panel X2/1-24 and the HV Power Supply 11 and primary power will be applied to the associated circuit. A terminal block X3/1-20. Switched primary power (380/415V...

  • Page 96: Control Circuitry

    K1 in the HV Power supply. This applies mains voltage HV Supply, Personnel or the IOT. The Beam Supply Breaker to the SigmaPlus Contactor and Circuit Breaker assembly (Dwg Tripped LED H4 will illuminate and may be t of the HV supply 839-8121-450 Sht.
  • Page 97 Section IV - Theory of Operation Figure 4-3. VSWR Fault Overload Input 888-2430-001 4-27 WARNING: Disconnect primary power prior to servicing.
  • Page 98 SigmaPLUS™ Figure 4-4. HV 2nd Step 4-28 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 99 Section IV - Theory of Operation Figure 4-5. Amplifier Normal Fault Counter Input Figure 4-6. Crowbar Fired Fault Overload Input 888-2430-001 4-29 WARNING: Disconnect primary power prior to servicing.
  • Page 100 SigmaPLUS™ Figure 4-7. Reject Power Overload Input 4-30 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 101 Section IV - Theory of Operation Figure 4-8. Tube Over Temperature Fault Circuit Figure 4-9. Motor Overload Fault Circuit 888-2430-001 4-31 WARNING: Disconnect primary power prior to servicing.
  • Page 102 SigmaPLUS™ Figure 4-10. Fault Counter Inputs Ion Current Overload Circuit 4-32 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 103 Section IV - Theory of Operation Figure 4-11. External Interlock Circuit 888-2430-001 4-33 WARNING: Disconnect primary power prior to servicing.
  • Page 104 SigmaPLUS™ Figure 4-12. Rear Door Panel Interlock Circuit Figure 4-13. Logic & Control Interconnect to Contactor Driver PCB 4-34 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 105 Section IV - Theory of Operation Figure 4-14. Internal Interlock Circuit 888-2430-001 4-35 WARNING: Disconnect primary power prior to servicing.
  • Page 106 SigmaPLUS™ Figure 4-15. Body Current Metering and Overload Input 4-36 888-2430-001 WARNING: Disconnect primary power prior to servicing.

  • Page 107: Maintenance

    Section V Maintenance 5.3.1.2 Electrical Performance General Transmitter Maintenance It is recommended that the following be checked and adjusted Information only if out of specification. See system test/adjustment for de- This section contains maintenance instructions for the Sig- tails. maPlus™ series of UHF Television Transmitters. Routine main- a.

  • Page 108: Interior Transmitter Cleaning

    Sigma+plus that support the fan shaft. Check for the presence of pillow e. Wipe off the high voltage insulators on the beam supply blocks on your unit and see if a lubrication fitting is and filter capacitors with a clean dry cloth. installed.
  • Page 109 Section V - Maintenance Table 5-1. Recommended Test Equipment Vestigial Sideband Demodulator Miscellaneous Test Equipment Tektronix 1450-1 37MHz IF (NTSC CCIR-M) or Booton RF Voltmeter with 50 Ohm adapter Tektronix 1450-2 38.9MHz (PAL CCIR-B) or Polaroid Oscilloscope Camera DS34W/613656 Hood Tektronix 1350 Bird Model 43 Wattmeter with 1W to 1kW elements Tektronix Sideband Analyzer 1405...

  • Page 110: Ipa And Cavity Air Flow

    Sigma+plus b. MINIMUM Flow rates (Glycol) should be as follows: INSULATING RUBBER GLOVES WHEN USING TOOLS THAT WILL TOUCH THE CENTER CONDUCTOR. IOT 7340 Collector 8.5 GPM (32 LPM) a. Have Magic T RF Switching system put the operable IOT Body 2.0 GPM (8 LPM) on air.

  • Page 111: Iot Replacement

    Section V - Maintenance k. Loosen two hose clamps on the break away outer sleeve Table 5-2. IOT/Magnet Connection Checklist and move the sleeve down to allow access to the inner conductor. Cathode Heater Connection l. Rotate inner conductor slip joint counterclockwise and Heater Connection slide it up from the lower break away assembly.

  • Page 112: System Tuning Sequence After Changing Tube

    Sigma+plus n. Correct the Klystrode output with the correction circuits above aural carrier indicating loading of the primary by the such that all the vision parameters and IPs are in spec. secondary. v. Adjust Primary cavity coupling loop for desired band- System tuning sequence after changing tube 5.6.5 width.

  • Page 113: Visual Power Calculation

    Section V - Maintenance f. Convert the average power to peak sync using the formu- b. Local Oscillator frequency. lae: c. Signal levels. System M - 1.68 x (Ave power) = Peak of sync power d. Detector Phasing. System G -1.772 x (Ave power) = Peak of sync power e.

  • Page 114: Signal Levels

    Sigma+plus 5.7.3.4 Signal Levels a. Connect the test equipment as shown and detailed in Figure 5-1. b. Connect the IF Oscillator to the Modulator and VSB Filter module. Connect the RF Power Meter to the DSB output of the Modulator and VSB Filter module. c.

  • Page 115: Sound 1 Bandpass Filter

    Section V - Maintenance Figure 5-2. Sound Signal Level Test Setup Note: f. Tune C63 coupling capacitor to obtain peak response as When using the probe at this point the pulse rise time will appear shown at S1 center frequency. slow.
  • Page 116 Sigma+plus Figure 5-3. Bandpass Filter Response Curves System G Digital 5-10 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 117 Section V - Maintenance Figure 5-4. Bandpass Filter Response Curves System I Digital 888-2430-001 5-11 WARNING: Disconnect primary power prior to servicing.
  • Page 118 Sigma+plus Figure 5-5. Bandpass Filter Response Curves System B, G, IRT, M 5-12 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 119 Section V - Maintenance Figure 5-6. Lowpass Filter Response Curves System B, G Digital 888-2430-001 5-13 WARNING: Disconnect primary power prior to servicing.
  • Page 120 Sigma+plus Figure 5-7. Lowpass Filter Response Curves System I Digital 5-14 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 121 Section V - Maintenance Figure 5-8. Lowpass Filter Response Curves System B, G IRT 888-2430-001 5-15 WARNING: Disconnect primary power prior to servicing.

  • Page 122: Reflected Vision

    Sigma+plus 5.7.3.10 Reflected Vision Procedure for Pre-correction of • Connect a UHF RF source of 11.6mW into X4. Check that Transmitter the reflected vision power meter drive on X1 pin 5 is 4V. If Note: This procedure assumes that Exciter is correctly set up, all necessary adjust R194 to achieve 4V.

  • Page 123: Intermodulation Product Correction For Common Mode Amplification

    Section V - Maintenance c. UHF input level required for Diplexed Operation mand. Depress the raise command for 15 seconds, this ensures the external AGC voltage is at its maximum. 1. 0.5 mW Visual Black Level for Visual Service Adjust R-19 for 110% output power then depress the lower 2.

  • Page 124: Feed Forward System (Common Mode Amplification)

    Sigma+plus Feed Forward System (Common l. Change video input to a ten step staircase and check the ICPM, Diff Gain, Diff Phase, and LF Linearity. These Mode Amplification) should all be very close in level to the input as detailed in step h.

  • Page 125: Diplexed Operation Feed Forward

    Section V - Maintenance this is used as a reference. The modulation is turned Off and the c. Adjust the line stretcher PH1 to minimize differential gain sensitivity of the oscilloscope increased so that the graticule from the IPA. represents 125Hz per vertical division (0.5% of full deviation per d.
  • Page 126 Sigma+plus Table 5-4 “N” = Amplifier Cabinet open for 24V operation NX27 SW4 - on/low Logic Board Jumpers and crowbar fired NX16 SW5 - off/high DIP Switch Settings Remote Controls a-b 3 shot SW6 - on/low Link for 5V to 12V opera- b-c singles shot SW7 - on/low tion...

  • Page 127: Exciter Correction

    Section V - Maintenance 5.11.1.4 Exciter Correction h. Switch the Demodulator to envelope detection and correct a. Reconnect the exciter correction circuitry; Diff Phase, Differential Phase using the Differential Phase corrector. ICPM, and Linearity Correctors. Switch the Demodulator back to synchronous detection. b.

  • Page 128: Final System-Level Adjustments

    Sigma+plus as much as possible; you may need to re-adjust this potentiometer Table 5-5. Digital & Analogue Interface in the final system installation. We will set potentiometers R93 (Blanking Level Adj) and R87 (Sync Stripper Threshold Adj) at final system installation. We P.C.B.

  • Page 129: Troubleshooting Guide

    Section V - Maintenance BK Heater Voltage Adjustment Troubleshooting Guide 5.13.3 5.13 The BK Heater Voltage Adjustment is located on the contactor AC Control Voltage 5.13.1 and circuit breaker control assembly in the front of the Amplifier This procedure checks and sets the proper amplitude of the three Cabinet.

  • Page 130: Control And Support Systems: Testing/Adjusting

    Sigma+plus d. Depress Off button. Open the amplifier logic panel and Table 5-6. Isolated Supplies P.C.B. adjust SW5 and SW6 switch settings for the proper time delay. R-120 Heater Volts Meter Cal WARNING R- 38 Grid Current Overload Set Point ALL OVERLOAD/INTERLOCK ADJUSTMENTS SHOULD BE necessary, repeat steps c.

  • Page 131: Body Current Metering Calibration & Overload Ad

    Section V - Maintenance overload condition. (Return transmitter to operating con- f. Utilize shorting stick to ground isolated supplies, AM dition) assembly, and thyratron deck assembly. g. Hang ground stick from thyratron deck assembly Body Current Metering Calibration & Over- 5.14.3 h.

  • Page 132: Bias Current Overload

    Sigma+plus n. Locate Pots R253 meter null, R243 body current calibrate, c. Reduce exciter/drive power to minimum by rotating R19 and R242 body current trip. Auto O/P Power pot on the IOT R.F. Corrector CCW. o. Adjust R253 to zero body current meter d.

  • Page 133: Motor O/L

    Section V - Maintenance 5.14.3.9 Motor O/L g. After 10 minutes of heater operation, depress beam on The motor overload protection for the cavity fan consists of an command. Collector current should be 0 Amps. After 30 overload sensor attached to contactor K1 in the Contactor and minutes, adjust bias voltage for 0.2 Amps collector current.

  • Page 134: Troubleshooting Section

    Section VI Troubleshooting Introduction After taking a reading, use breakers or disconnect switches to again remove all primary power to the Transmitter and peripheral In the event of a problem, the trouble area must first be isolated equipment before opening enclosure where test leads were to a particular area such as an Exciter, IPA input, IPA Power routed or connected.
  • Page 135 Sigma+plus Figure 6-1 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 136 Section VI - Troubleshooting Figure 6-2 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 137 Sigma+plus Figure 6-3 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 138 Section VI - Troubleshooting Figure 6-4 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 139 Sigma+plus Table 6-1 IOT WIRE NUMBER CROSS REFERENCE CHART CONNECTIVITY WIRE # COLOR SIZE SCHEMATIC # FROM 0101 1.0 SB 839 8121 112 CIX1/1 AX4/4 0102 BLACK 1.0 SB 839 8121 112 CIX1/2 AX4/5 0103 1.0 SB 839 8121 112 CIX1/3 AX4/6 0104...
  • Page 140 Section VI - Troubleshooting Table 6-1 (Continued) IOT WIRE NUMBER CROSS REFERENCE CHART CONNECTIVITY WIRE # COLOR SIZE SCHEMATIC # FROM 0160 YELLOW 0.5 T2 839 8121 112 SX1/3 0161 BLACK 1.0 SB 839 8121 112 SX1/4 0162 RED/GREEN 0.5 T2 839 8121 112 KX13/1 SX2/1...
  • Page 141 Sigma+plus Table 6-1 (Continued) IOT WIRE NUMBER CROSS REFERENCE CHART CONNECTIVITY WIRE # COLOR SIZE SCHEMATIC # FROM 0323 RG223 COAX 50 839 8121 109 RX17 0401 ORANGE/BLACK 0.5 T2 839 8121 111 RX7/21 AX1/12 0403 BLUE 0.5 T2 839 8121 111 RX7/4 AX1/14 0404...
  • Page 142 Section VI - Troubleshooting Table 6-1 (Continued) IOT WIRE NUMBER CROSS REFERENCE CHART CONNECTIVITY WIRE # COLOR SIZE SCHEMATIC # FROM 0461 839 8121 111 QX2/2 QP2/2 0462 839 8121 111 QX2/3 QP1/+ 0463 839 8121 111 QX2/4 QP1/- 0465 16-2 1CORE 839 8121 111 RX8/1...
  • Page 143 Sigma+plus Table 6-1 (Continued) IOT WIRE NUMBER CROSS REFERENCE CHART CONNECTIVITY WIRE # COLOR SIZE SCHEMATIC # FROM 0605 GREEN CIX3/12 AH/5 0606 16-2 2CORE 839 8121 111 CIX3/13 AF/X3 0607 BLUE CIX3/14 AF/X2 0608 16-2 2CORE 839 8121 111 CIX3/15 AM/1 0609...
  • Page 144 Section VI - Troubleshooting Table 6-1 (Continued) IOT WIRE NUMBER CROSS REFERENCE CHART CONNECTIVITY WIRE # COLOR SIZE SCHEMATIC # FROM 2016 BLACK 1.0 SB 839 8121 116 DX9/5 JX1/6 2017 0.5 T2 839 8121 116 DX9/1/9 JX1/7 2018 VIOLET 1.0 SB 839 8121 116 DX9/3...
  • Page 145 Sigma+plus Table 6-1 (Continued) IOT WIRE NUMBER CROSS REFERENCE CHART CONNECTIVITY WIRE # COLOR SIZE SCHEMATIC # FROM 2086 RG223 COAX 50 OHM 839 8121 116 FX10 EX11 2087 RG188 COAX 50 OHM 839 8121 116 DX11 EX21 2088 RG223 COAX 50 OHM 839 8121 116 DX25 2089...
  • Page 146 Section VI - Troubleshooting Table 6-2. Component Designators Letter codes for the designation of kind of item: Letter code Kind of item Examples Assemblies, subassemblies Amplifier with tubes or transistors, magnetic amplifier, laser, master. Transducers, from non-electrical quantity to electrical Thermo-electric sensor, thermo cell, photo-electric cell, quantity or vice-versa dynamometer, crystal transducer, microphone, pick-up,...
  • Page 147 Sigma+plus Power Meter PCB Troubleshooting All measured signal levels are grossly erroneous Disconnect coax jumper from X5 and X6 SMB connectors and connect a DC-coupled 10 dB attenuator between X5 and a spectrum analyzer set to observe 45.75 MHz (or 38.9 MHz if that is pix IF); if 1st coversion circuitry is working, you should see a pix carrier level at IF 10 dB below that at UHF;...

  • Page 148: Parts List

    Section VII Parts List Note A list of commonly used abbreviations are found at the end of this parts list REPLACEABLE PARTS LIST INDEX Table 7-1. FORMAT USA 90-150KW SIGMA+ WTR ..994 9650 001 Table 7-2.
  • Page 149 Table 7-47. POWER MONITOR PCB ASSY BASIC ..3913 466 7842000 7-43 Table 7-48. IOT2 INTERFACE PCB ....992 9384 001 7-46 Table 7-49.
  • Page 150 Table 7-104. INTERNAL AIR 50HZ SIGMA+ ....992 9455 001 7-73 Table 7-105. ISOLATED POWER SUPPLY ASSY ... 992 8742 001 7-73 Table 7-106.
  • Page 151 Table 7-1. FORMAT USA 90-150KW SIGMA+ WTR - 994 9650 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 817 2336 130 SAFETY CHECK LIST-SIGMA 0.0 EA 992 9487 001 SIGMA+ FRONT CABINET 3.0 EA 0010 992 9351 001 IOT2 REAR PROTO 3.0 EA...
  • Page 152 ORDER QTY 1 DO NOT ORDER AS(000) LAST DIGITS = CH NO PASSIVE POWER PROD MAGIC TEE COMBINER 620 2910 000 RF SYSTEM A14-19 DIE 4-1/16" 0.0 EA ORDER QTY 1 DO NOT ORDER AS(000) 620 2910 000 RF SYSTEM A14-19 DIE 4-1/16" 0.0 EA LAST DIGITS = CH NO DIELECTRIC COMMS MAGIC TEE COMBINER...
  • Page 153 ORDER QTY 1 QUINCY SUPPLIED 992 6742 005 PUMP MODULE 0.0 EA ORDER QTY 1 QUINCY SUPPLIED Table 7-2. INSTALLATION MATERIALS 90/120K - 992 8808 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 464 0242 000 CHAIN HOIST 10FT 1 TON 1.0 EA...
  • Page 154 PLIERS, ZIPPER TUBING 1.0 EA 994 8442 001 KIT, PROBE (1.5) CAPACITVE TUN 3.0 EA Table 7-3. IOT METRIC CONTINGENCY KIT - 917 2336 082 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2522 178 15085 SCR PNPZ ST ZN M4X16 10.0 EA...
  • Page 155 PLUG RF N FREE 50R RG214 2.0 EA Q1X2:Q2X2 Table 7-5. KIT, EXT WATER COOLING, - 943 5396 187 FIND # HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 0 ..843 5396 187 ..LAYOUT,PLUMBING, HD90/120 ..0.0 EA 1 .
  • Page 156 52 ..003 8020 060 ..CU, TBG 2.0 NOM DIA ... . 0.5250 FT 53 ..359 0984 000 ..REGULATOR, PRESS REDUCING ..3.0 EA Table 7-6. CALORIMETERY ASSY IOT OPTIONAL - 992 8812 001 HARRIS P/N DESCRIPTION QTY/UM REF.
  • Page 157 Table 7-7. GLYCOL PUMP MODULE, IOT - 992 6742 005 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 003 8020 113 TUBING POLYPROPYLENE 7.0 FT 041 1310 030 GASKET, RUBBER 8.40 FT #BETWEEN FRONT PANELS 055 0120 230 CONDUIT 3/4 IN. 6.0 FT...
  • Page 158 620 2726 000 GAUGE, PRESSURE 3.5IN DIAL 1.0 EA M001 646 0665 000 INSPECTION LABEL 1.0 EA 646 1483 000 HARRIS NAMEPLATE 1.0 EA 817 2336 123 RUNNING SHT, PUMP MODULE 0.0 EA 822 0218 001 STRAP, GND 1.0 EA...
  • Page 159 TUBE, 2.625 OD X 6.50 LG 1.0 EA 843 4578 001 ASSY INSTR PUMP DISC 0.0 EA Table 7-9. TANK RETURN ASSY - 952 9190 610 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 358 3457 000 FILTER HOLDER, NYLON 1.0 EA...
  • Page 160 Table 7-11. LINE CNTL CAB, 480V 60HZ - 992 8724 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 472 1706 000 XFMR 480V/380V 6KVA 60HZ 1.0 EA T002 560 0059 000 VARISTOR V511DB40 6.0 EA R004 R005 R006 R007 R008 R009...
  • Page 161 PWA, REMOTE SHUNT RESET FOR 1.0 EA 999 2787 001 WIRE/TUBING LIST. BASIC 1.0 EA Table 7-14. SOLID STATE RELAY ASSY - 992 8817 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 336 1198 000 SCREW 6-32 X 1/4 4.0 EA...
  • Page 162 843 5466 771 SCH, REMOTE SHUNT RESET 0.0 EA 843 5466 773 PWB, REMOTE SHUNT RESET 1.0 EA Table 7-17. CONTROL CABINET SYSTEM M - 992 9472 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 116 WIRING DIAG EXCITER 0.0 EA...
  • Page 163 917 2336 068 COVER - EXCITER PSU 2.0 EA 041 1310 030 GASKET RUBBER RIGHT ANGLED 4.40 ME 646 1483 000 HARRIS NAMEPLATE 6.72"x1.09" 1.0 EA 992 9367 001 MARSHALLING PCB ASSEMBLY 1.0 EA 2413 015 00606 TERM BLOCK 2 WAY (MK3) 1.0 EA...
  • Page 164 SKT RF BNC B/HD CRMP RG188 2.0 EA 2422 015 12166 TERM INSULUG M3 RED 20.0 EA Table 7-20. PSU DISTRIBUTION PCB - 992 8729 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 101 WIR DIAG EXCITER PSU DIST PCB 0.0 EA...
  • Page 165 3913 935 12013 IC 74HC08 2 I/P AND (DIL-14 4.0 EA 0000 A009:A018:A019 382 0777 000 IC 74HC30 8I/P NAND (DIL-14) 1.0 EA A006 3913 935 12047 IC 74HC86 8X 2 I/P OR (DIL-14 2.0 EA 0000 A027:A032 3913 935 12028 IC 74HC32 4X 2 I/P OR (DIL-14 3.0 EA 0000 A011:A017:A020...
  • Page 166 4.0 PK 0000 X015:X016:X017:X019: 2432 490 00002 SKT DIL 14WAY x 0.3" FL/FRAME 2.0 EA FOR A002:A040 Table 7-23. SYSTEM INTERFACE PCB - 992 9013 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 125 SCHEM SYSTEM INTERFACE 0.0 EA...
  • Page 167 382 0594 000 IC TL074ACN 7.0 EA A007 A008 A009 A010 A012 A013 382 0856 000 IC 74HC4078 NOR/OR (DIL-14) 1.0 EA A011 382 0813 000 IC 74HC240 OCTAL BUF (DIL-20) 7.0 EA 0000 A015:A018:A021:A024: A025:A026 A027 9338 827 36682 OPTO COUPLER 4N46 1.0 EA A029...
  • Page 168 1.0 EA FOR A027 2432 490 00004 SKT DIL 18WAY x 0.3" FL/FRAME 4.0 EA FOR A001:A002:A003 A004 Table 7-24. MARSHALLING PCB ASSEMBLY - 992 9367 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 84354690151 MARSHALLING PCB 1.0 EA 2413 015 00889 TERM SL12-V 9.0 EA...
  • Page 169 4.0 EA 0000 X002 X003 X004 X005 3913 465 53930 MODIFIED SOLDER TAG 1.0 EA Table 7-26. PCB ASSY-SYNC PULSE D/AMP - 3913 466 75660 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 461 75660 PCB - SYNC PULSE DIST AMP 1.0 EA...
  • Page 170 Table 7-28. KIT CABLES PHASNG KIT - 943 5396 193 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 8213 268 79020 PLUG RF TNC STRGHT 50R 13.0 EA K1X1:K1X2:K1X4:K2X1: K2X2 8213 268 79022 PLUG RF BNC CBL CRMP 50R RG223 2.0 EA...
  • Page 171 Table 7-32. MODE CONTROLLER P.C.B. ASSY. - 992 8934 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 161 SCHEM MODE CONTROLLER 0.0 EA 3913 461 78560 PCB MODE CONTROLLER 1.0 EA 382 0774 000 IC 74HC14 HEX SCHMIDT (DIL-14 8.0 EA...
  • Page 172 0000 K002:K003:K004:K005: K006:K007:K008:K009: K010:K014:K015:K016: K013: 3913 017 00080 RES NWORK 4K7 X8 SIL9 2.0 EA 0000 R001:R023: 3913 017 01430 RES NWORK 100K X8 DIL16 1.0 EA 0000 R002: 3913 017 01420 RES NWORK 330R X8 DIL16 2.0 EA 0000 R003:R004: 2322 156 14702 RES 4K7 1% 0W6 MTLFLM 6.0 EA...
  • Page 173 Table 7-33. CNTRL C/F-IOT 1EXC CNTRL CAB - 943 5396 184 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2413 015 00859 TERM BL4 3.0 EA BX01:CX02:PJ04 2422 034 18144 SKT 9 WAY D TYP CRIMP PIN 1.0 EA CX22 2422 025 04439 PLUG 12 WAY (QIKMATE) 1.0 EA...
  • Page 174 NUT FULL 10-32 SST 7.0 EA 306 0004 000 NUT FULL 6-32 SST 6.0 EA Table 7-36. SET OF CABLES. - 943 5396 190 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2411 027 07529 PLUG RF SMB 50R ELBW CRMP 6.0 EA...
  • Page 175 0000 C020:C024:C027:C028: C031:C032:C033:C034: C116:C041:C042:C043: C044:C045:C046:C130: C131:C132:C133:C134: C135:C136:C137:C138: C139:C140:C141:C142: C143:C144:C145:C146: C147:C148:C149:C150: C151:C152:C153:C154: C155:C156:C157:C158: C159:C160:C161:C342: C018:C022:C023: C019:C021:C025:C026: C029:C030 2000 501 11104 CAP 100N 10% 50V X7R CER 1206 4.0 EA 0000 C035:C036:C039:C040: 2000 075 04109 CAP 10U 10% 16V TANT Size C 2.0 EA 0000 C037:C038: 2222 683 10159...
  • Page 176 0000 R062:R234:R237:R238: R249:R250:R253:R254: R063:R064:R065:R066: 2322 156 13003 RES 30K 1% 0W6 MTLFLM 2.0 EA 0000 R075:R110: 2100 700 05309 RES 30R 5% 0.25W Size 1206 2.0 EA 0000 R058:R245: 2322 156 12703 RES 27K 1% 0W6 MTLFLM 2.0 EA 0000 R074:R109: 2100 700 05181 RES 180R 5% 0.25W Size 1206 4.0 EA...
  • Page 177 922 1206 086 MODIFIED SCREENING FENCE 4.0 EA 922 1206 088 MODIFIED SCREENING FENCE 2.0 EA Table 7-38. DISPLAY PCB COMBINED - 992 8891 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 461 78320 PCB DISPLAY 1.0 EA 9335 825 80682 IC ULN2004A DIL-16 3.0 EA...
  • Page 178 398 0018 000 FUSE,FAST CART 1.50A 250V 2.0 EA F001 F002 402 0201 000 CLIP, FUSE, DUAL MOUNTING 4.0 EA XF001 XF002 XF003 XF004 484 0425 000 FILTER LOW PASS 60MHZ 1.0 EA A033 484 0426 000 FILTER LOW PASS 225 MHZ 2.0 EA A027 A029 492 0833 000...
  • Page 179 C050 C051 C052 C055 C056 C067 C068 C069 C070 C071 C072 C073 C075 C076 C079 C083 C084 C091 C094 C098 C099 C100 C126 C127 C131 C132 516 0909 000 CAP 100PF 10% 200V 3.0 EA C048 C077 C096 516 0927 000 CAP 330PF 10% 200V 2.0 EA C001 C027...
  • Page 180 917 2406 001 COAX JUMPER 1.0 EA 999 2785 001 HARDWARE LIST, PWR MTR 1.0 EA Table 7-40. SIGMA+ FRONT CABINET - 992 9487 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 992 9384 001 IOT2 INTERFACE PCB 1.0 EA 0010 992 8734 002 1KW S.S.
  • Page 181 2513 712 02005 WSH CRKL ST 18-8 M4 2.0 EA 041 1310 001 GASKET RUBBER (STRAIGHT) 1.40 ME 646 1483 000 HARRIS NAMEPLATE 6.72"x1.09" 1.0 EA 943 5396 164 FITTINGS KIT-IOT CIRCUIT 1.0 EA 2413 015 06304 GROMMET PVC 12.7X2.4X 9.6 1.0 EA...
  • Page 182 2413 016 00515 END PLATE (TERM) 1.0 EA 448 1026 000 HINGE, METAL LIFT-OFF (RH) 2.0 EA Table 7-41. IOT2 CONT/MONTRNG - 992 9346 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 632 1179 000 METER 0-120% TO SPEC 2.0 EA 632 1180 000 METER 1-1.5% &...
  • Page 183 SCR PAN PHIL 4-40 X 3/8 SST 2.0 EA 922 1206 262 GUARD CONTROL LOGIC PSU 1.0 EA Table 7-42. KIT OF CBLS CNTRL/MON SIGMA+ - 943 5396 433 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 843 5396 433 DWG KIT CBLS CNTRL/MON SIGMA+ 0.0 EA...
  • Page 184 Table 7-44. DIGITAL & ANALOG I/FACE - 992 8739 002 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 151 WIRING DIAG ANALOG & 0.0 EA 3913 461 78140 PCB DIGITAL & ANALOGUE I/F 1.0 EA 9333 297 90682 OPTO COUPLER ILQ-74 6.0 EA...
  • Page 185 2000 003 04221 CAP 220U 25V ELEC AX 105deg 1.0 EA C076 2412 526 01041 BATTERY 3.6V POLARIZED 1.0 EA G001 9338 827 16682 OPTO/RX HFBR-2522 6.0 EA 0000 H001:H012:H013:H014: H015:H016 9338 827 15682 OPTO/TX HFBR-1522 1.0 EA H002 9337 437 90682 LED 3MM MV5474C GRN 9.0 EA 0000 H003:H004:H005:H006: H007:H008...
  • Page 186 2322 156 12202 RES 2K2 1% 0W6 MTLFLM 9.0 EA R064:R094:R275:R277: R010:R052: R021:R038:R283: 3913 017 00130 RES NWORK 10K X8 SIL9 12.0 EA R069:R070:R073:R074: R077:R078 R081:R082:R085:R086: R089:R090 3913 017 00210 RES NWORK 47K X8 DIL16 1.0 EA R289 2322 156 11202 RES 1K2 1% 0W6 MTLFLM 1.0 EA R286:...
  • Page 187 FOR:A009:A012:A014: A016:A020:A025 2432 490 00003 SKT DIL 16WAY x 0.3’ FL/FRAME 7.0 EA FOR:A001:A039:A040: A041:A042:A043:R289 Table 7-45. IOT2 LOGIC & CONTROL PCB ASSY - 992 9371 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 817 2336 172 SCHEM IOT2 LOGIC & CONTROL 0.0 EA...
  • Page 188 C001:C007:C101:C102: C103 C104:C105:C106:C107: C108:C109 C110:C111:C112:C113: C114:C115 C116:C117:C118:C119: C120:C121 C122:C123:C124:C125: C126:C127 C128:C129:C130:C131: C132:C133 C135:C136:C137:C138: C139:C140 C141:C142:C143:C144: C145:C146 C147:C148:C150:C151: C152:C158 C159:C160:C161:C163: C164:C165 C166:C167:C168:C170: C171:C172 C173:C174:C175:C176: C177:C178 C179:C180:C181:C182: C183:C184 C185:C186:C187:C188: C189:C190 C191:C192:C193: C194:C195: C028:C030:C038:C039: C040:C037 C045 C196:C197:C202:C205: C206:C207:C209:C210: C212:C214:C215:C216: C217:C218:C219:C225: C226:C227:C228:C229: C230:C231:C232:C233 C211 2000 500 00001 CAP 100N 20% 50/63V X7R SIP8 2.0 EA...
  • Page 189 2322 156 11003 RES 10K 1% 0W6 MTLFLM 38.0 EA R093:R094:R154:R155 R159:R160:R169:R186: R187:R198:R199:R202: R204:R206:R209:R233: R234:R242 2322 156 13003 RES 30K 1% 0W6 MTLFLM 1.0 EA R085 2322 156 13301 RES 330R 1% 0W6 MTLFLM 18.0 EA 0000 R004:R120:R121:R122: R123:R124:R125:R126: R127:R128:R129:R130: R131:R132:R134:R172: R173:R236 2322 156 18202 RES 8K2 1% 0W6 MTLFLM...
  • Page 190 FOR A086 2413 015 14085 TAB 2.8MM PCB MTG 8.0 EA X030:X031:X032:X033: X034:X035:X037:X038 Table 7-46. PWR MON PCB ASSY SYS M - 3913 466 7842004 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 466 7842000 POWER MONITOR PCB ASSY BASIC 1.0 EA...
  • Page 191 2013 751 15572 CAP 1N2 1% 350/400V MICA 1.0 EA C040 2000 501 01109 CAP 10P 5% 50V NPO CER 1206 2.0 EA C048:C049 2000 101 04159 CAP 15U 16V ELSOL RAD/WIRE 3.0 EA C032:C035:C036 2000 501 03159 CAP 15P 5% 50V NPO CER 1206 2.0 EA C096:C097 2222 809 09003...
  • Page 192 R033:R037:R046:R068 R075:R079:R081:R082 R086:R088:R091:R093 R109:R110:R112:R113 R117:R135:R136: R157:R158:R159:R160 R161:R162:R163:R164 R165:R168:R173:R203 R204:R205:R206:R207 R208:R209:R237 2100 700 05152 RES 1K5 5% 0.25W Size 1206 2.0 EA R083:R107 2100 700 05222 RES 2K2 5% 0.25W Size 1206 1.0 EA R092 2100 700 05272 RES 2K7 5% 0.25W Size 1206 1.0 EA R011 2100 700 05302...
  • Page 193 TAG SOLDER PCB TAIL 2.5 X 1.3M 1.0 EA 2413 550 00076 BOX SCREENING 20x20x10mm + LID 1.0 EA 0500 Table 7-48. IOT2 INTERFACE PCB - 992 9384 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 817 2336 190 SCHEM IOT2 INTERFACE PCB 0.0 EA...
  • Page 194 1.0 EA 917 2336 316 GUARD 2.0 EA 917 2336 313 SPACER 2.0 EA Table 7-50. CABLEFORM/KIT OF CABLES - 943 5396 432 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2500 400 98003 NUT HALF HEX BR AG M8 8.0 EA 0010...
  • Page 195 CBL 6MM2 (84/0.30) BLK 0.30 RL 0722 190 00076 CBL 2.5MM2 (50/0.25) GRN/YLW 1.50 RL Table 7-51. LOCAL OSC. D.A 3 WAY - 992 9736 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 466 78060 PCB-RF DIST AMP 3 WAY 1.0 EA...
  • Page 196 Table 7-54. IPA COOLING - 992 9435 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2622 890 11929 MOUNT ANTI-VIBRATION Studs M6 4.0 EA 952 9190 229 FAN HOUSING ASSY 1.0 EA 939 8121 589 CHANNEL 1.0 EA 939 8121 590 SUPPORT 2.0 EA...
  • Page 197 3913 461 70420 PCB - 3DB COUPLER 1.0 EA 0028 Table 7-57. SINGLE-PROBE IOT - 943 5396 405 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 466 17460 MON.PROBE ASSY (1 PROBE) 1.0 EA 3913 464 06760 PROBE SLEEVE (MEDIUM) 1.0 EA...
  • Page 198 V003:V005 3913 935 00007 REG 7812 +12V 1.5A TO-220 1.0 EA A001 Table 7-60. KIT OF CABLES 20W AMP - 943 5396 310 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 0722 100 10001 CBL RF 50R RG188A/U TO MIL-C-1 0.80 RL...
  • Page 199 Table 7-61. CA5800 AMPLIFIER PCB ASSY - 992 9095 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 472 SCHEM CA5800 AMP PCB 0.0 EA 843 5396 247 ASSY DWG CA5800 AMP PCB 0.0 EA 943 5396 246 PCB CA5800 AMPLIFIER 1.0 EA...
  • Page 200 1.0 EA R005 2113 256 02255 RES 4R7 5% 2W5 W/W 1.0 EA R004 Table 7-63. SIGMA+ FEED FORWARD A26-40 - 992 9433 002 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 470 SCHEM FEED FORWARD AMP KIT 0.0 EA...
  • Page 201 917 2336 308 SPACER 2.0 EA 922 1206 256 LABEL COMP DESIGNATOR(F/FRWRD) 1.0 EA Table 7-65. 3DB COUPLER LO POWER BD5 - 3913 466 56810 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 463 63920 FIXING STRIP 3.0 EA 3913 466 83810 COUPLER TUBE SUB ASSY(LO* 1.0 EA...
  • Page 202 Table 7-67. PROBE ASSY - 3913 467 11200 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 461 77460 PROBE LOOP 1.0 EA 3913 461 77470 PROBE BASE 1.0 EA 2100 700 02519 RES 51R 2% 0.25W Size 1206 1.0 EA 2400 031 00011 SKT RF SMC 50R PCB MTG STRGHT 1.0 EA...
  • Page 203 CU. TBG .750 OD 0.30 ME 2400 122 00003 SWITCH THERMAL 70 deg.C OPEN 1.0 EA Table 7-71. FITTINGS KIT-IOT CIRCUIT - 943 5396 164 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 943 5396 113 CABLEFORM IOT CCT ASSY 1.0 EA...
  • Page 204 FERRL B LACE 1.0MM2 3.0 EA 2422 026 02269 SKT 7 WAY SCR CBL DIN 2.0 EA X013:X014 Table 7-75. IOT2 FRNT CONT C/F - 943 5396 298 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2413 015 00884 TERM BL15 1.0 EA...
  • Page 205 CONDUIT FLEXIBLE 21.2 PASF21 0.750 RL 250 0539 000 CABLE, CONTROL COPPER BRAID 5.0 RL Table 7-77. IOT2 FRNT RF C/F - 943 5396 300 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 0711 101 01102 CBL RF 50R TRIAX 11820 9.0 ME...
  • Page 206 LABEL-HEATER VOLTAGES IOT TUBE 1.0 EA 646 1603 000 LABEL, CE MARK (38x38mm) 1.0 RL Table 7-80. IOT2 SW METER - 992 9345 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 822 1206 111 DWG RFI GASKET (RF CORRECTOR) 2.0 EA...
  • Page 207 Table 7-82. KIT OF CBLS SW METER SIGMA+ - 943 5396 377 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2432 020 00271 SKT RF BNC B/HD CRMP RG188 4.0 EA 0000 KX04:KX05:KX02:KX09: 2400 031 00014 PLUG RF SMC 50R CBL R/A RG188 3.0 EA...
  • Page 208 2000 501 11104 CAP 100N 10% 50V X7R CER 1206 28.0 EA C048:C049 C050:C051:C069:C070: C106:C122 C123:C124:C127:C128 2000 501 01109 CAP 10P 5% 50V NPO CER 1206 4.0 EA C016:C017:C055:C102 2000 501 03181 CAP 180P 5% 50V NPO CER 1206 1.0 EA C024 2000 501 03471 CAP 470P 5% 50V NPO CER 1206...
  • Page 209 2100 700 05473 RES 47K 5% 0.25W Size 1206 1.0 EA R173 2122 362 00148 POT 50K 10% LIN W5 TOP ADJ 2.0 EA R041:R160: 2122 362 00149 POT 100K 10% LIN W5 TOP ADJ 2.0 EA 0000 R019:R171 2100 700 05153 RES 15K 5% 0.25W Size 1206 1.0 EA R043...
  • Page 210 HEADER 6 WAY 0.1" PITCH 1.0 EA X013 2413 015 11076 CRADLE SELF ADHESIVE 2.0 PK Table 7-84. HANDHELD DIAGNOSTICS ASSY - 992 8810 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 822 1206 069 WIRING DIAG HAND HELD 0.0 EA...
  • Page 211 3.0 EA 0185 2413 015 14168 TAG SOLDER PCB TAIL 2.5 X 0.9M 2.0 EA Table 7-87. EPROM (A6) HAND HELD MONITOR - 3913 036 55900 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 935 20091 IC 27C128 EPROM 128K(95-200nS) 1.0 EA...
  • Page 212 CONTACT PLUG 22-20 AWG 3.0 EA 0713 152 07003 CBL 4 X 7/0.2 PVC SCRN 0.30 RL Table 7-89. CNTCTR SIGMA+ NO EXCTR PSU - 992 9353 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 450 SCHEM IOT2 CONT/CCT BRKR 0.0 EA...
  • Page 213 SCR CSKPZ ST ZN M4X6 4.0 EA 922 1206 255 LABEL COMP DESIGNATOR (BRKR) 1.0 EA Table 7-90. IOT2 C/CRKR CONT C/F - 943 5396 306 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2422 025 03827 SKT 24 WAY (QIKMATE) 2.0 EA...
  • Page 214 4.0 EA 0140 2422 025 03827 SKT 24 WAY (QIKMATE) 1.0 EA X008 Table 7-92. PSU DISTRIBUTION PCB - 992 8729 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 101 WIR DIAG EXCITER PSU DIST PCB 0.0 EA 3913 461 78120 PCB EXCITER PSU &...
  • Page 215 TERM SL5-V 1.0 EA X009 2413 015 14086 TAB 6.3mm Vertical PCB MTG 4.0 EA Table 7-94. FOCUS MONITORING ASSY - 992 9427 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2000 101 04688 CAP 6U8 16V ELSOL RAD/WIRE 1.0 EA...
  • Page 216 Table 7-95. IOT2 REAR PROTO - 992 9351 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 943 5396 392 DUMPLOAD 6WAY IOT 1.0 EA 952 9190 003 INTERLOCK & EARTHING SYSTEM 1.0 EA 0030 992 8742 001 ISOLATED POWER SUPPLY ASSY 1.0 EA...
  • Page 217 GLAND LOCKNUT 32MM ST 1.0 EA 424 0586 000 HOSE BLACK 2" ID 0.40 ME Table 7-96. IOT2 REAR CONT C/F - 943 5396 302 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2422 025 03827 SKT 24 WAY (QIKMATE) 1.0 EA...
  • Page 218 TERM INSULUG M5 YELLOW 3.0 EA 0140 2422 015 12182 TERM INSULUG M4 YELLOW 9.0 EA Table 7-99. IOT2 REAR CABLES KIT - 943 5396 305 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 8213 268 79242 PLUG RF N FREE 50R RG393 1.0 EA...
  • Page 219 Table 7-101. INTERLOCK & EARTHING SYSTEM - 952 9190 003 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 992 8814 001 SWITCH ASSY 1.0 EA 943 5396 078 EARTH SWITCH ASSY 1.0 EA 0015 922 0965 216 CONTACT ASSY 3.0 EA 922 0965 045 END BLOCK 1.0 EA...
  • Page 220 424 0625 000 HOSE BLACK 1.5 ID 2.0 ME 426 0077 000 ISOLATION MOUNT 4.0 EA Table 7-104. INTERNAL AIR 50HZ SIGMA+ - 992 9455 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 358 3397 000 HOSE BARB 1.5 ID HOSE 2.0 EA...
  • Page 221 NUT FULL 10-32 SST 3.0 EA 314 0007 000 SPLIT LOCK WASHER No;10 SST 3.0 EA Table 7-106. MODIDFIED CORE EC70 - 917 2336 154 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 414 0233 000 FERRITE CORE EC70 UNGAPPED 1.0 EA Table 7-107.
  • Page 222 2222 030 36109 CAP 10U 25V ELECT 2.0 EA 0000 C105:C106: 2013 017 01543 CAP 10U 20% 16V TANT 4.0 EA 0000 C107:C108:C121:C122 8213 268 75169 CAP 47N 3KV +-5% PAPER 1.0 EA C201: 2422 086 01015 FUSE 500MA T 5X20 LBC IEC127-3 1.0 EA F001: 2422 086 01005...
  • Page 223 2522 178 15062 SCR PNPZ ST ZN M3X12 6.0 EA 917 2336 078 LABEL - ISOL.P/S. FUSE VALUES 1.0 EA Table 7-109. DUMPLOAD 4WAY I.O.T. - 943 5396 106 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 468 13270 CABLE ASSY 2.0 EA...
  • Page 224 RES 50R 5% 250W B/OXIDE (TERM 4.0 EA 2522 615 04005 WSH LOCK INT STZN M3 8.0 EA Table 7-110. CABLE ASSY - 3913 468 13270 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 0722 100 31004 CBL RF 50R RG142B/U TO MIL-C-1 0.60 ME...
  • Page 225 LABEL BERYLLIA WARNING 15 X 30 1.0 EA 3913 081 65300 LABEL 15MM HAZARD-TOXIC 1.0 EA Table 7-113. CABLE ASSY - 943 5396 393 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 0722 100 31004 CBL RF 50R RG142B/U TO MIL-C-1 1.70 ME...
  • Page 226 Table 7-116. BODY / COLLECTOR CURRENT MON A - 992 8744 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 943 5396 112 C/F BODY/COLLECTOR CURRENT MON 1.0 EA 0010 2222 114 17682 CAP 6800U 40V ELECT 1.0 EA CAP 6800U 40V E C002...
  • Page 227 12.0 EA R011 R012 2113 116 13007 RES 25K 1% 0W5 MTLFLM 2.0 EA 0000 R013 R014 Table 7-120. CROWBAR ASSY SIGMA+ - 992 9410 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 817 2336 138 TEST SPEC CROWBAR ASSY 0.0 EA...
  • Page 228 922 1206 117 CORONA BUSTER CROWBAR 1.0 EA 922 1206 118 CORONA BUSTER CROWBAR 2.0 EA Table 7-121. CROWBAR CABLEFORM SIGMA+ - 943 5396 438 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 843 5396 438 ASSY DWG CROWBAR C/F SIGMA+ 0.0 EA...
  • Page 229 Table 7-122. FDU INTERFACE PCB ASSY - 992 8748 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 3913 461 78210 PCB FDU INTERFACE 1.0 EA 0010 506 0268 000 CAP 100N 5% 1600V PPS 1.0 EA CAP 100N 5% 1600V PP C001...
  • Page 230 SPLIT LOCK WASHER No;6 SST 2.0 EA 2422 015 01002 SOLDERTAG M3 SNGL BR SN 1.0 EA Table 7-124. TX SPARE PARTS SIGMA+ - 994 9659 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2422 135 03669 SKT RELAY 14P 2.0 EA...
  • Page 231 736 0243 000 EXCITER PSU 1.0 EA 430 0242 000 FAN 230V AC 50/60hZ 1.0 EA Table 7-125. SEMI CONDUCTOR/FUSE KIT - 994 9526 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 9330 745 40702 TRANS 2N3904 (TO-92) 1.0 EA 9330 791 70702 TRANS 2N3906 (TO-92) 1.0 EA...
  • Page 232 382 0773 000 IC 74HC11 3I/P & GATE (DIL-14 1.0 EA 382 0774 000 IC 74HC14 HEX SCHMIDT (DIL-14 1.0 EA 3913 935 12097 IC 74HC20 4 I/P NAND (DIL-14 1.0 EA 3913 935 12028 IC 74HC32 4X 2 I/P OR (DIL-14 1.0 EA 3913 935 12035 IC 74HC74 2X D F/F (DIL-14...
  • Page 233 9338 827 35682 DISPALY TLI311 1.0 EA 9338 827 51682 IC TL7705ACP (DIL-8) 1.0 EA 384 0205 000 DIODE 1N4148 5.0 EA 384 0268 000 RECT 7.5KV PIV 1.0 EA 384 0307 000 DIODE 1N916 1.0 EA 9330 635 30112 DIODE 1N4001 1.0 EA 384 0610 000...
  • Page 234 FUSE 10A F ATO SAE-J1284 5.0 EA 2422 086 00018 FUSE 250MA F 5X20 HBC IEC127-1 5.0 EA Table 7-126. PCB KIT SIGMA+ - 994 9658 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 992 8729 001 PSU DISTRIBUTION PCB 1.0 EA 992 8736 001 RF CORRECTOR P.C ASSY...
  • Page 235 4.0 EA 0010 2522 032 58207 SCR HEX ST 18-8 M6 X 10 4.0 EA 0008 Table 7-128. C/F BODY/COLLECTOR CURRENT MON - 943 5396 112 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 2422 015 12169 TERM INSULUG M6 RED 13.0 EA...
  • Page 236 SPLIT LOCK WASHER No;6 SST 2.0 EA 2422 015 01002 SOLDERTAG M3 SNGL BR SN 1.0 EA Table 7-130. ISOLATED SUPPLIES 2 PCB ASSY - 992 9080 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 839 8121 288 SCHEM ISOLATED SUPPLIES 2 0.0 EA...
  • Page 237 2013 017 01543 CAP 10U 20% 16V TANT 4.0 EA 0000 C107:C108:C121:C122 8213 268 75169 CAP 47N 3KV +-5% PAPER 1.0 EA C201: 2422 086 01015 FUSE 500MA T 5X20 LBC IEC127-3 1.0 EA F001: 2422 086 01005 FUSE 100MA T 5X20 LBC IEC127-3 1.0 PK F002: 2422 086 00013...
  • Page 238 SCR PNPZ ST ZN M3X12 6.0 EA 917 2336 078 LABEL - ISOL.P/S. FUSE VALUES 1.0 EA Table 7-131. SPARE IOT TROLLEY,TUBE & CCT - 992 9406 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 359 1113 000 PLUG 1/2"BSP FEMALE 2.0 EA...
  • Page 239 CABLEFORM IOT CCT ASSY 1.0 EA 378 0169 000 IOT+CCT WATER 60KW (IOT7360) 1.0 EA Table 7-132. SPARE IOT TROLLEY/CCT NO TUBE - 992 9407 001 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 359 1113 000 PLUG 1/2"BSP FEMALE 2.0 EA 359 1112 000 PLUG 3/4"BSP FEMALE...
  • Page 240 BASIC LINE CONTROL CAB 1.0 EA 999 2809 001 HARDWARE LIST, LINE CTRL 1.0 EA Table 7-134. TERM ASSY, X3, 380V 50HZ - 939 8205 046 HARRIS P/N DESCRIPTION QTY/UM REF. SYMBOLS/EXPLANATIONS 358 3000 000 PLATE, END STOP, DIN RAIL MT 2.0 EA...
  • Page 241 List of Commonly Used Abbreviations AURAL/VISUAL INTEGRATED CIRCUIT ADPT ADAPTER IMPs Intermodulation Products Automatic Gain Control INTRCNCT INTERCONNECT Automatic Line Control INTERMEADIATE POWER AMPLIFIER AMPLIFIER Intermodulation Products ASSY ASSEMBLY ISOLATED B LACE BOOT LACE LIGHT EMMITTING DIODE BRKAWAY BREAKAWAY LOCAL OSCILLATOR BRKT BRACKET LSI’s...
  • Page 242  ...
  • Page 243 Silver Solder 1/16 inch diameter, 30%-45%, Hard Stay-Silv flange-face to flange-face dimension of the outer conduc- #45, Aladdin #45, HARRIS part number 099 0002 238 tor and subtracting the dimension of the anchor connector Paste flux (Engelhard Ultra-Flux 1 lb jar) HARRIS part (bullet) shown in Figure A-3.
  • Page 244 Sigma+plus Figure a-4.Guide For Use With Hand Hack Saw Figure a-1. Outer Conductor Measurements Figure a-5. Cutting with Hand Band Saw Figure a-2. Measurements When Elbows Are Used Figure a-6. Swing Arm Band Saw Cutting Tips Figure a-3. Measurements for Cutback of Inner Conductor 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 245 Appendix A Cutting and Soldering Transmission Lines e. METHOD #5. Cut Off Saw. These saws are similar to radial arm saws. It is rare to find one big enough to cut 6-1/8" line. The set up is similar to the swing arm band saw. See Figure A-6.
  • Page 246 Sigma+plus Cleaning The Soldered Joint f. If the flux scale is particularly stubborn repeat the process. g. Rinse thoroughly when done with water and dry line Vigorous scrubbing with a wire brush and steel wool will remove before assembling. torch black with good results. In addition, cleaning with an acid solution can make this job easier.
  • Page 247 Appendix B Lightning Protection Recommendation Introduction b.1. hazards than lightning. Some of these mission lines causing large induced volt- What do you do with a 2 million volt pulse anomalies are listed and defined: age that destroy high voltage rectifier pushing 220,000 amps of current into your a.
  • Page 248 • Antenna coupling unit connected to an- tenna ground. π • The circuit is equivalent to the normal Tee used by Harris. • Underground coax. • Guy wire length broken by insulators and grounded at the bottom end. The transmitter building must be given Figure b-11.
  • Page 249 Appendix B Lightning Protection Recomendations • MCG Electronics, Inc. of entrance and in addition have a ferrite prevented. Install surge protection on all • EFI Corp. choke around it located between the en- incoming and outgoing lines at the wall of •...
  • Page 250 Sigma+plus Figure b-15. Basic Elements of a Properly Designed Antenna System Figure b-16. Surge Protectors and Ferrite Choke 888-2430-001 WARNING: Disconnect primary power prior to servicing.

  • Page 251: Surge And Lightning Protection

    Appendix C Surge and Lightning Protection and Grounding Considerations Surge and Lightning Protection c. Earth ground d. RF ground A lightning storm can cause transients in excess of 2 kV to appear on power or field signal lines. The duration of these transients varies from a few hundred nanoseconds to a few microseconds.
  • Page 252 Sigma+plus DC Ground c.2.3 inches (0.5 meters). The ground rods should be copper-clad steel, a minimum of eight feet (2.5 meters) in length and spaced apart DC grounds in the transmitter are connected to a ground bus, which in turn is routed to a common cabinet ground and then not more than twice the rod length.

  • Page 253: General Description

    Appendix D Heat Exchanger System • General Description Calorimeter Hardware and Digital Thermometer (for meas- uring transmitter power) - OPTION See Appendix E Introduction d.1.1 Equipment Characteristics d.1.5 This Appendix contains the information necessary to install, d.1.5.1 Electrical Requirements operate, maintain and service the Heat Exchanger System. The Table d-1 lists the electrical requirements of the Heat Exchanger parts listing for the Heat Exchanger System (Fluid Cooler, Pump System.

  • Page 254: Installation

    * Voltage & Frequency specified at time of purchase. list. If the contents are incomplete or if the unit is damaged electrically or mechanically, notify the carrier and HARRIS CORPORATION, Broadcast Transmission Division. 888-2430-001...

  • Page 255: Operation

    An adequate amount of soft silver The system cooling coil assembly should be located outside the solder (Harris part 086-0004-038) is supplied with the plumbing building on a level concrete pad and securely fastened with kit. Good silver brazed joints are acceptable but not required. A anchor bolts.
  • Page 256 Sigma+plus Table d-3. Controls and Indicators REF. CONTROL/INDICATOR FUNCTION FAHRENHEIT Indicates temperature of coolant to transmitter from 30 F (-1.1 C) to 220 F (104.4 TEMPERATURE gauge PRESSURE gauge Indicates pressure of coolant to transmitter from 0 to 100 PSI. PUMP A/OFF/B switch (S1) Selects between a primary or secondary pump and removes pump power from pump A or pump B to enable maintenance to be performed.
  • Page 257 Sigma+plus i. Allow pump to operate for approximately 30 seconds. At WARNING this time, the pressure gauge should rise to 70 to 90 psi. If pressure does not rise, shut off pump and vent air from pump casing by removing seal flushing fitting at top of ENSURE PRIMARY POWER IS OFF BEFORE JUMPER IS IN- pump casing.
  • Page 258 Sigma+plus j. When the pump operates within 70 to 90 PSI, the flow Allow water to circulate 30 minutes with the pump oper- control valves to the transmitter are adjusted to the correct ating. flow rates. Refer to the schematic package OVERALL o.

  • Page 259: Description Of Operation

    Sigma+plus pected, the system plumbing is not performing as expected. The Description of Operation reason should be located and corrected. Temperature Control d.4.1 Temperature control of the transmitter is accomplished by pump- ing a water/glycol fluid from the pump(s) through the tube collector and the RF Load(s), where the fluid absorbs heat.

  • Page 260: Maintenance

    Sigma+plus temperature of the fluid after it has gone through the cooler is has been chosen to provide sufficient transmitter cooling under worst case ambient and heat load conditions. used as a reference temperature. If the temperature of the outlet coolant is less than 90 F, no fans are running.
  • Page 261 Sigma+plus Table d-9. IOT Fluid Cooler 60Hz - 2, 3, 4, Fan Units Harris P/N Description QTY/UM REF. SYMBOLS/EXPLANATIONS 570 0357 000 Contactor K1, K2 430 0246 000 Fan Motor FA1, FA2 472 1758 000 Control Transformer 430 0244 000...

  • Page 262: General Introduction

    Appendix E Calorimetric Measurement (OPTION) General Introduction across the load seem to vary, take several readings over time and average them before applying them to the formula. The power output of a transmitter can be accurately verified by calorimetric measurement of the coolant passing through a reject The same averaging technique should be applied to reading the load.

  • Page 263: Specific Gravity

    Appendix E Specific Gravity The Ave indicated flow on the flow meter = 10 GPM ∆T = 180 - 120 = 60 The next step is to determine the coolant specific gravity. This is accomplished by using the hydrometer and cylinder supplied 180+120 =150 with the installation.

  • Page 264: Transmitter Operation

    Appendix E Next, we must determine the Ave specific gravity flowing thermal losses in bare 1 inch pipe are on the order of 1 F per 100 through the reject load (S.G. ). This is found in the same manner, feet of pipe.
  • Page 265 Appendix E Figure e-2. Correction Factor 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 266 Appendix E 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 267 Appendix E 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 268 Appendix E 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 269 Appendix E 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 270 Appendix E 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 271 Appendix E e-10 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 272 Appendix E 888-2430-001 e-11 WARNING: Disconnect primary power prior to servicing.
  • Page 273 Appendix E e-12 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 274 Appendix E 888-2430-001 e-13 WARNING: Disconnect primary power prior to servicing.
  • Page 275 Appendix E e-14 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 276 Appendix F Vendor Data 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 277 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 278 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 279 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 280 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 281 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 282 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 283 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 284 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 285 f-10 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 286 888-2430-001 f-11 WARNING: Disconnect primary power prior to servicing.
  • Page 287 f-12 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 288 888-2430-001 f-13 WARNING: Disconnect primary power prior to servicing.
  • Page 289 f-14 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 290 888-2430-001 f-15 WARNING: Disconnect primary power prior to servicing.
  • Page 291 f-16 888-2430-001 WARNING: Disconnect primary power prior to servicing.
  • Page 292 888-2430-001 f-17 WARNING: Disconnect primary power prior to servicing.
  • Page 293 Appendix G Beam Supply IOT BROADCAST BEAM SUPPLY - 736 0269 000 HARRIS P/N DESCRIPTION QTY/UM REF. SYSMBOL/EXPLANATIONS 510 0748 000 . . CAPACITOR, 30 UF, 660 VAC..3 ..C1,2,3 560 0081 000 .

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