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Harris Z3-48HD+ Technical Manual

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TECHNICAL MANUAL
888-2621-001
Z3-48HD+
Z3-48HD+
Rev. A1: Dec., 2007
T.M. No. 888-2621-001
© Copyright Harris Corporation 2007
All rights reserved

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Summary of Contents for Harris Z3-48HD+

  • Page 1 TECHNICAL MANUAL 888-2621-001 Z3-48HD+ Z3-48HD+ Rev. A1: Dec., 2007 T.M. No. 888-2621-001 © Copyright Harris Corporation 2007 All rights reserved...
  • Page 2 HARRIS Service Parts Department. Telephone 217/222-8200 to contact the service parts department or address correspondence to Service Parts Department, HARRIS CORPORATION, Broadcast Systems Division, P.O. Box 4290, Quincy, Illinois 62305-4290, USA. The HARRIS factory may also be contacted through a FAX facility (217/221-7096). NOTE: The # symbol used in the parts list means used with (e.g.
  • Page 3 Manual Revision History Z3-48HD+ Technical Manual REV. DATE Pages Affected Nov., 2007 Entire Manual Dec., 2007 Minor changes in Manual 12/5/07 888-2621-001 MRH-1 WARNING: Disconnect primary power prior to servicing.
  • Page 4 MRH-2 888-2621-001 12/5/07 WARNING: Disconnect primary power prior to servicing.
  • Page 5 • In the ten digit part numbers, if the last three numbers are 000, the item is a part that Harris has purchased and has not manufactured or modified. If the last three numbers are other than 000, the item is either manufactured by Harris or is purchased from a vendor and modified for use in the Harris product.
  • Page 6 12/5/07 888-2621-001 MRH-1 WARNING: Disconnect primary power prior to servicing.
  • Page 7 12/5/07 888-2621-001 WARNING: Disconnect primary power prior to servicing.
  • Page 8 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 9 12/5/07 888-2621-001 WARNING: Disconnect primary power prior to servicing.
  • Page 10 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.

  • Page 11: Table Of Contents

    Table of Contents Section I Operator Guide Introduction ....... . . 1-1 Installation Instruction .
  • Page 12 Table of Contents 888-2508-001 WARNING: Disconnect primary power prior to servicing.

  • Page 13: Operator Guide

    Section I Operator Guide Introduction This manual is to provide information regarding the Z3-48HD+ Transmitter System’s operation. In addition to the System Controllers, other System-specific functions are discussed. Any further site-specific functionallity will be discussed in the site-specific data packages provided with the Z3-48HD+ Transmitter System, including the individual Z16HD+ transmitter manuals.
  • Page 14 Z3-48HD+ Section I Operator Guide There are several methods of combining the analog (FM) and digital (HD) RF to create an IBOC signal - also known as Modulation Format - that may be used in a typical IBOC system including a backup mode. The four modes of operation are: FM - Analog RF only;...

  • Page 15: Installation Instruction

    Returns And Exchanges Damaged or undamaged equipment should not be returned unless a Return Authorization is issued. When communicating with Harris Corporation, Broadcast Division, specify the order number or invoice number. Include complete details regarding circumstances and reasons for return in the request. Custom or special order equipment is not returnable.
  • Page 16 AC feed should again be on a separate AC feed from the transmitter in case one transmitter breaker is off. Each Harris-made piece of equipment to be placed in an existing rack can be operated at 120 or 240 VAC depending on the AC input card position.

  • Page 17: Transmitter Operation

    SP2 outputs located in cabinet A (middle). Any reject power may be the result of a different connection from what was originally used at the Harris test facility. Additionally, some phase adjustment can be accomplished on the BoostPro GUI screen. See the BoostPro documentation for more details. Usu- ally, no adjustment of amplitude or phase will be necessary.

  • Page 18: Rf Metering

    (2-6 inches) to W900 at the transmitter C Exciter Switch board output. Reject power may be the result of a different con- nection from what was originally used at the Harris test facility. Usually, no adjustment of amplitude of phase will be necessary.
  • Page 19 Z3-48HD+ Section I Operator Guide Table 1-1 System Controller Average Power Metering ZD32 System Controller FM+HD 14kW As Indicated 3.5kW HD only As Indicated 1.75kW FM only 20kW As Indicated A REJ PWR reading of 100% will be one-fourth the total output power when the 3 dB hybrid combiner is used, such as with the ZD32 System Controller.
  • Page 20 Z3-48HD+ Section I Operator Guide Table 1-2 Expected Power Results for Failure Conditions FM + HD Full Operation One TX OFF One TX OFF Two TX OFF Two TX OFF One TX ½ Power One TX ½ Power Power Power Power Power Power...

  • Page 21: Control Functions

    Z3-48HD+ Section I Operator Guide 1.3.2 Control Functions Three momentary push-button switches allow system ON and OFF control functions to be exercised from the front of the System Controllers. These pushbuttons are: OFF, ON HI, and ON LOW. Depressing one of these three pushbutton switches will simultaneously command both transmitters controlled by that System Controller into the selected ON mode, or will return both transmitters controlled by that System Controller to the OFF mode simultaneously.

  • Page 22: Remote Control

    Z3-48HD+ Section I Operator Guide The REJ LOAD LED indicator is actually two indicators in one. One half of the indicator is an amber LED, the other is a red LED. If the RF power delivered to the combiner reject load associated with that System Controller exceeds a preset warning level, usually 90%, the amber portion of the LED will illuminate.

  • Page 23: Drive Functions

    Z3-48HD+ Section I Operator Guide 1.3.6 Drive Functions Exciter muting and main/alternate functions are controlled by transmitter C of the Z3- 48HD+. This is the cabinet on the left in a typical layout. Exciter Main/Alternate control can be accessed through the transmitter C controller LCD display screen.

  • Page 24: Hdx-Fm Exciter/Boostpro Control

    Z3-48HD+ Section I Operator Guide In this system, the HDx-FM Exciter's AUX output is used to drive the BoostPro boost amplifier(s) in the other TX cabinet. Phase of this drive will be shifted within the BoostPro and there are Phase adjustments in the BoostPro. If there is a phase delay beyond what these two adjustments can compensate for, some line length adjustment may be necessary for proper transmitter output phasing.

  • Page 25: Alignments

    Z3-48HD+ Section I Operator Guide Alignments NOTE: All adjustments required have been made at the factory using calibrated test loads and power meters to verify operating power levels. The following alignments are to be performed only in the event of a field replacement involving any of these components.
  • Page 26 Z3-48HD+ Section I Operator Guide Table 1-5 ZD32 System Controller: FM Only Mode TEST TARGET SET UP CONDITION SAMPLE POINT VOLTAGE 0.275 Volts 20kW of system forward power 0.075 Volts 800 Watts of simulated reflected power 0.275 Volts 100% of reject power; 5kW Table 1-6 Z3-48HD+ System Controller: FM+HD Mode TEST...
  • Page 27 Z3-48HD+ Section I Operator Guide To set the forward power metering calibration, set the transmitters as follows (see Table 1-9 on page 1-15): • Set transmitter system (only those controlled by that particular System Controller) to operate at 100% of normal operating power (not necessarily full power capability).
  • Page 28 Z3-48HD+ Section I Operator Guide • Reverse the reflected power coupler on the appropriate combiner output by loosening the hose clamps holding it to the transmission line and reattaching it to the line in its reverse position. This must be done without disassembling the coupler itself.
  • Page 29 Z3-48HD+ Section I Operator Guide Table 1-10 System Controller Remote Connections Terminal Terminal Function Remarks Remote Serial J1-1 J11-1 TX ON LOW Momentary connection to ground sets the system COMMAND to LOW POWER ON mode. Maximum open circuit voltage is approximately 15VDC J1-2 J11-14 TX ON HIGH...
  • Page 30 Z3-48HD+ Section I Operator Guide Table 1-10 System Controller Remote Connections J1-14 J11-20 LOW RF STATUS Provides ground connection through 200 Ohms when the forward RF output power level drops below a preset level. J1-15 J11-8 REJ PWR Provides ground connection through 200 Ohms WARNING when the forward RF output power to the combiner reject load exceeds a preset level.
  • Page 31 Section II Parts List Parts List Replaceable Parts List Index Table 2-1 XMTR, Z3-48HD+ HYB, FORMAT - - - - - - - - - - - 994 9712 005 Table 2-2 CABLE PKG, EXTENDER CABLES SYS CTRL - - - - 917 2332 878 (A) Table 2-3 CABLE PKG, RF &...
  • Page 32 Z3-48HD+ Section II Parts List Table 2-1 XMTR, Z3-48HD+ HYB, FORMAT - 994 9712 005 Harris PN Description Qty UM Reference Designators 250 0129 000 CORD, 3C 16AWG TYPE SJ 0 FT 250 0626 000 CORD, AC, IEC PLUG TO IEC RECP...
  • Page 33 Z3-48HD+ Section II Parts List Table 2-4 ASSY, DIR COUPLER - 927 8096 010 (E) Harris PN Description Qty UM Reference Designators 358 0498 000 CLAMP, HOSE DIA 2.563 MIN 3.50 MAX 2 EA 620 0581 000 COUPLING, SLEEVE, 3-1/8...
  • Page 34 Z3-48HD+ Section II Parts List Table 2-8 DISPLAY BD, DUAL TX CNTRL - 992 8388 005 (E) Harris PN Description Qty UM Reference Designators 000 0000 010 B/M NOTE: 0 DWG 358 1928 000 JUMPER 1/4 LG 1/8H 7 EA...
  • Page 35 839 8025 004 SCHEM, DISPLAY BD 0 DWG 843 5215 004 PWB, DISPLAY 1 EA Table 2-9 PWA, SYSTEM CONTROLLER - 992 8853 001 (M) Harris PN Description Qty UM Reference Designators 000 0000 010 B/M NOTE: 0 DWG 354 0309 000...
  • Page 36 Z3-48HD+ Section II Parts List 384 0720 000 DIODE, TVS (UNIDIR), 1.5KE15A 3 EA CR068,CR074,CR077 384 0743 000 DIODE ARRAY DUAL 8 ESD 3 EA U002,U014,U015 384 0838 000 DIODE, TVS (UNIDIR), 1.5KE36A 2 EA CR070,CR078 384 0854 000 DIODE ARRAY, 8 ISOLATED ESD 2 EA CR001,CR046 386 0085 000...
  • Page 37 SCHEM, PTD SYS CONTROLLER 0 DWG 843 5293 076 PWB, PTD SYS CONTROLLER 1 EA Table 2-10 XMTR, ZD24/32HD+HYB, FORMAT - 994 9712 003 (A) Harris PN Description Qty UM Reference Designators 2520003000A *WIRE, MIL, 20AWG 1000V WHITE 0.3 FT...
  • Page 38 Z3-48HD+ Section II Parts List 610 0538 000 PLUG, DSUB 15PIN CRIMP-POKE 2 EA J2,J3 614 0048 000 TERM BLK, 2ROW 4-TERM 20A 1 EA A1TB7 620 0498 000 ADAPTOR 3-1/8 6 EA 620 0544 000 CONN, ANCHOR INS 3-1/8; 50 OHM 2 EA 620 0581 000 COUPLING, SLEEVE, 3-1/8...

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