AR 750S1G6C Operating And Service Manual
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AR 750S1G6C Operating And Service Manual

Rf broadband amplifier
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Operating and
Service Manual
750S1G6C
Model
10051079
Part Number
Serial Number
160 Schoolhouse Road, Souderton, PA 18964 • 215-723-8181 • Fax 866-859-0582 • www.arworld.us

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Summary of Contents for AR 750S1G6C

  • Page 1 Operating and Service Manual 750S1G6C Model 10051079 Part Number Serial Number 160 Schoolhouse Road, Souderton, PA 18964 • 215-723-8181 • Fax 866-859-0582 • www.arworld.us...
  • Page 3 REGULATION (EC) 1907/2006 of the European Parliament and of the Council of 18 December 2006 concerning the Registration, Evaluation, Authorization and Restriction of Substances of Very High Concern Chemicals (SVHC) Supporting documentation is held by AR RF/Microwave Instrumentation’s Quality department in Pennsylvania, United States. Place of issue:...
  • Page 5 Instructions for European EMC Conformity WARNING It is the responsibility of the user of this equipment to provide electromagnetic shielding, filtering and isolation which is necessary for EMC compliance to Directive 2014/30/EU. The equipment must therefore be operated in a shielded area which provides a sufficient level of attenuation to meet the radiated emissions and immunity specifications.
  • Page 7 The caution symbol denotes a potential hazard. Attention must be given to the statement to prevent Your AR equipment may have more than one power supply cable. Use damage, destruction, or harm. only approved power cable(s). If you have not been provided with a Dangerous voltages are present.
  • Page 8 EQUIPMENT CONTAINING LASERS risk of serious injury due to unsafe AR Field Probes (FL/PL Series) and Field Analyzers (FA product handling should be a fundamental Series) are Class 1 laser products containing embedded consideration every user.
  • Page 9 Zur Vermeidung von Personen- oder Sachschäden gilt BEVOR SIE DAS GERÄT ANSCHLIESSEN es, die Hinweise zu beachten. Ihre AR-Ausrüstung hat möglicherweise mehr als ein Stromversorgungskabel. Gefährliche elektrische Spannungen sind vorhanden. Verwenden Sie nur zugelassene Stromkabel. Falls Sie kein Stromkabel oder Höchste Vorsicht ist geboten.
  • Page 10 Die meisten Geräte müssen während des Versands, der Montage und des Gebrauchs LASER-INFORMATION transportiert werden. Jeder Nutzer sollte sich AR - Feldsonden (FL/PL-Serie) und Feldanalysatoren (FA-Serie) über das Risiko von schweren Verletzungen sind Laserprodukte der Klasse 1 mit eingebetteten Klasse-4- durch unsachgemäße...
  • Page 11 électrode de mise à la Votre équipement AR peut disposer de plus d’un câble d’alimentation terre de protection. électrique. Utilisez uniquement un ou des câbles d’alimentation approuves.
  • Page 12 éliminer le risque injustifié de blessures causées par le levage est fournie par les méthodes de travail de NIOSH (publication Les sondes de champ AR (série FL/PL) et les analyseurs de n° 94-110) disponibles sur : champ (série FA) sont des produits laser de classe 1 contenant des lasers intégrés de classe 4.
  • Page 13 Er zijn gevaarlijke elektrische spanningen aanwezig. Wees uiterst voorzichtig. VOOR HET OPZETTEN VAN DE STROOM Uw AR-apparatuur kan meer dan een netvoedingskabel bezitten. Gebruik alleen goedgekeurde netvoedingskabel(s). Koopt een Wijst op een terminal aan die bedoeld is voor aansluiting netvoedingskabel die is goedgekeurd voor gebruik in uw land als u...
  • Page 14 APPARAAT DAT LASERS BEVAT distributie, de assemblage en het gebruik moeten worden behandeld, moet het risico AR-terreinsondes (FL/PL-serie) en terreinanalysatoren (FA- op ernstig letsel als gevolg van een serie) zijn laserproducten van klasse 1 met ingesloten onveilige behandeling van het product een klasse 4-lasers.

  • Page 15: Table Of Contents

    Model 750S1G6C TABLE OF CONTENTS TABLE OF CONTENTS ....................i GENERAL INFORMATION ................1 General Description ....................1 Specifications ......................1 Power Supplies ....................... 1 Protection Circuits ....................2 Installation ......................2 1.4.1 Location ........................2 1.5.2 Power ........................3 OPERATING INSTRUCTIONS ................
  • Page 16 Model 750S1G6C 2.9.1 No-Fault Control Actions ..................31 2.10 Remote Control Interfaces ..................32 2.10.1 GPIB (IEEE-488) Communications ..............32 2.10.2 RS-232 Communications ..................32 2.10.3 Fiber-Optic Serial Communications ..............33 2.10.4 USB Communications ..................33 2.10.5 Ethernet Communications ..................34 2.11...
  • Page 17 Low or No Power Output (DC Tests) (Diagram 10050484) ........ 55 4.3.9 Low or No Power Output (RF Test) (Diagram 10050484) ........56 FIGURES Model 750S1G6C Front Panel ................8 Model 750S1G6C Rear Panel ................9 Rear Panel 7-16 DIN Connector ................11 Align Connectors for Interface ................13 Placement of Wrenches on Connector ..............
  • Page 18 Model 750S1G6C...

  • Page 19: General Information

    Protection is provided by DC current limiting, over-temperature shut down and RF power limiting. • SPECIFICATIONS Refer to the AR Data Sheet at the end of this section for detailed specifications. All voltage measurements referenced in this manual are Direct Current (DC) unless stated otherwise. POWER SUPPLIES The Model 750S1G6C contains five switching power supplies.

  • Page 20: Protection Circuits

    Select an operating location that will permit air to circulate freely around the amplifier’s cabinet. The Model 750S1G6C utilizes air cooling and should be located where the normal flow of air into or exiting from the unit will not be restricted, diverted, or re-circulated through the unit itself; in particular, the flow of warm air exiting the rear of the amplifier should not be impeded.
  • Page 21 Model 750S1G6C 1.5.2 Power The Model 750S1G6C is designed to operate using AC primary power of 200–240 Volts Alternating Current (VAC), 50–60 Hz single phase, 5200 watts maximum. CAUTION: Dangerous voltages are present in the Model 750S1G6C whenever the unit is plugged into an AC outlet.
  • Page 22 Model 750S1G6C Rev E...
  • Page 23 Amplifiers Model 750S1G6C The Model 750S1G6C is a solid-state, Features: Class A design, self-contained, air- cooled, broadband power amplifier • 750 W CW, 1.0 - 4.2 GHz designed for applications where • 500 W CW, 4.2 - 6.0 GHz instantaneous bandwidth, high gain •...
  • Page 24 Model 750S1G6C • 750 W, 1.0 - 4.2 GHz • 500 W, 4.2 - 6.0 GHz Electrical Specifications Parameter Symbol Minimum Typical Maximum Unit Rated Power Output (1.0-4.2 GHz) PSAT >1100 Rated Power Output (4.2-6.0 GHz) PSAT >900 Input for Rated Output P3dB Power Output @ 3dB Compression (1.0-4.2 GHz)
  • Page 25 Model 750S1G6C • 750 W, 1.0 - 4.2 GHz • 500 W, 4.2 - 6.0 GHz Absolute Maximum Rating Exceeding any of the limits listed here may result in permanent damage to the device. Parameter Minimum Typical Maximum Unit RF Drive ∞...
  • Page 26 Model 750S1G6C • 750 W, 1.0 - 4.2 GHz • 500 W, 4.2 - 6.0 GHz Mechanical Specifications Parameters Typical Unit 57.3 x 136.0 x 67.1 Dimensions (26U Rack) (W x H x D) 22.6 x 53.5 x 26.5 Weight...
  • Page 27 Location, Type Ports Connector Location RF Sample Ports Front Front Rear Rear Contact your AR RF/Microwave Instrumentation Sales Associate for specific model configuration pricing. Envelope Drawing AR RF/Microwave Instrumentation • 160 Schoolhouse Rd, Souderton, PA 18964 • 215-723-8181 • info@arworld.us •...
  • Page 28 Model 750S1G6C • 750 W, 1.0 - 4.2 GHz • 500 W, 4.2 - 6.0 GHz TYPICAL PSAT POWER @ 0 dBm INPUT TYPICAL POWER @ P3 dB COMPRESSION AR RF/Microwave Instrumentation • 160 Schoolhouse Rd, Souderton, PA 18964 •...

  • Page 29: Power

    Model 750S1G6C • 750 W, 1.0 - 4.2 GHz • 500 W, 4.2 - 6.0 GHz TYPICAL POWER @ P1dB COMPRESSION TYPICAL SMALL SIGNAL GAIN @ -20 dBm INPUT AR RF/Microwave Instrumentation • 160 Schoolhouse Rd, Souderton, PA 18964 •...
  • Page 30 Model 750S1G6C • 750 W, 1.0 - 4.2 GHz • 500 W, 4.2 - 6.0 GHz TYPICAL 2 HARMONICS @ 600 W AR RF/Microwave Instrumentation • 160 Schoolhouse Rd, Souderton, PA 18964 • 215-723-8181 • info@arworld.us • www.arworld.us • ISO 9001:2015 Certified •...
  • Page 31 TYPICAL NOISE FIGURE AR RF/Microwave Instrumentation • 160 Schoolhouse Rd, Souderton, PA 18964 To order AR Products, call: 215.723.8181. For an applications engineer, call: 800.933.8181. Direct to Service call: 215.723.0275 or email: service@arworld.us For Faxing Orders: 866.859.0582 (Orders Only Please) info@arworld.us Approved for public release by AR RF/Microwave Instrumentation ISO 9001:2015 Certified •...

  • Page 33: Operating Instructions

    The 750S1G6C amplifier is protected from input overdrive by an automatic level control circuit. The 750S1G6C RF power transistors are protected from over temperature by sensing the chassis temperature near the RF output transistors.

  • Page 34: Control And Indicator Functions

    Model 750S1G6C CONTROL AND INDICATOR FUNCTIONS The Model 750S1G6C’s front panel is shown in Figure 2-1; the unit’s rear panel features are detailed in Figure 2-2. Figure 2-1. Model 750S1G6C Front Panel Item Title Function INHIBIT, LOCAL, REMOTE Keylock Switch, 3-position; key removal in INHIBIT position only...

  • Page 35: Interface Identification

    Model 750S1G6C Figure 2-2. Model 750S1G6C Rear Panel INTERFACE IDENTIFICATION This section describes all external interfaces used to operate the amplifier via the control software. A Local/Remote switch on the front panel can allow control from the Local Controls or Remote Communications Ports.
  • Page 36 Model 750S1G6C 2.3.1.2 POWER Button The momentary POWER button turns the main power to the amplifier on and off. The status of the green light- emitting diode (LED) in the switch indicates whether the amplifier’s power is on or off. The main power supply fans are active when power is on.

  • Page 37: Inputs And Outputs

    Model 750S1G6C INPUTS AND OUTPUTS The input and output connectors described in the following sections are located on the unit’s front or rear panels; refer to the Front and Rear Panel features drawings (Figure 2-1, Figure 2-2). 2.4.1 RF Input This Type N connector is the RF input to the amplifier.
  • Page 38 Model 750S1G6C 2.4.2.1.1 Center Conductor Inspection Index Description New Condition Normal Use-Slight gap Bent pin section-Discard connector Fingers spread or collapsed-Discard connector Broken pin or pin section-Discard connector 2.4.2.1.2 Center Pin Concentricity Index Description Centered Maximum allowable off-center Fall-off center-Discard connector 2.4.2.1.3...

  • Page 39: Align Connectors For Interface

    Model 750S1G6C 2.4.2.1.4 Cleaning Procedure 1. Remove loose particles on the mating surfaces, threads, and similar surfaces using low-pressure compressed air. Avoid forcing dirt down into the connector by applying the forced air at a slight angle. 2. Use only isopropyl alcohol 90% for cleaning the connector parts. Clean the threads of the connector with a narrow-tipped lint-free cotton swab dampened with isopropyl alcohol 90%.

  • Page 40: Placement Of Wrenches On Connector

    Model 750S1G6C Figure 2-5. Placement of Wrenches on Connector 2.4.2.4 De-Mating of 7-16 DIN Connectors De-mating of the 7-16 connectors can be achieved by utilizing a similar technique as described in the mating portion of this application note. To de-mate the 7-16 interface, place one wrench on the body of the connector, and a second wrench on the connecting nut of the attached device or adapter.

  • Page 41: Ieee-488, Usb, And Rs-232 Interfaces

    2.4.3 IEEE-488, USB, and RS-232 Interfaces The Model 750S1G6C’s remote interfaces allow remote control, via a computer, of all amplifier functions (except for the Keylock Switch position) that can be controlled from the front panel. When the amplifier is in the Remote mode (as determined by the position of the Keylock Switch), a special Remote display is shown.

  • Page 42: Local User Interface

    Model 750S1G6C LOCAL USER INTERFACE This section describes the user interface used during local operation of the amplifier as it pertains to the control system. 2.6.1 Menu Map Below is a menu map for the amplifier. The screens depicted are only example screens. The actual values and settings will be different on the actual amplifier depending on user settings and operating conditions.

  • Page 43: Main Menu Screen

    Model 750S1G6C 2.6.3 Main Menu Screen The Main Menu screen is only available when the Keylock switch is in the LOCAL position. At the top of the screen is a blue bar graph and associated number that can represent either the RF Gain, ALC Threshold, ALC Detector Gain, or ALC Response value.

  • Page 44: Select Screen

    Model 750S1G6C 2.6.4 Select Screen The Select screen is the same as the Main Menu screen except for the menu options. The menu options in this screen allow the user to select what parameter the ADJUST knob can adjust. Once a selection is made, the screen will automatically change back to the Main Menu screen.

  • Page 45: User Screen

    Model 750S1G6C 2.6.6 User Screen The User screen presents the user with the revision levels of all the firmware that is running on all the main control system components. For the Switch Breakout Board (SBB) assemblies, only the piggy-back assembly firmware is listed.

  • Page 46: Power Indicator Frequency Screen

    Model 750S1G6C 2.6.8 Power Indicator Frequency Screen The Power Indicator Frequency screen allows the user to enter the current test frequency and improve the accuracy of the forward and reverse power indicators using a factory-installed look-up table. The black text at the top of the screen represents the current setting. The grey text shown inside the black box represents the new desired frequency and will update while entering a new value using the keypad.

  • Page 47: I/O Screen

    Model 750S1G6C 2.6.10 I/O Screen The I/O screen is used to present the user with menu options pertaining to the remote I/O ports found on the rear of the unit and the interaction with the touch screen. These options include the GPIB address, RS- 232/Fiber-Optic Serial Baud Rate, and key beep.

  • Page 48: Rs-232/Fiber-Optic Serial Baud Rate Screen

    Model 750S1G6C 2.6.12 RS-232/Fiber-Optic Serial Baud Rate Screen The RS-232/Fiber-Optic Serial Baud Rate screen is used to select the baud rate used by both the RS-232 serial port and the Fiber-Optic serial port. To get here from the Main Menu, touch the User menu button followed by the I/O menu button and finally the Serial menu button.

  • Page 49: Remote Screen

    Model 750S1G6C 2.6.14 Remote Screen When the Keylock switch is set to the REMOTE position the Remote screen appears. This screen has all the same information as the Main Menu screen except that the blue bar graph and associated value are only for the RF Gain value.

  • Page 50: Alc Lockout Feature

    Model 750S1G6C 2.6.16 ALC Lockout feature The ALC lockout feature allows users to lock all ALC settings and remain in the ALC Internal Mode regardless of a power cycle. Under normal operating conditions these settings can be changed at any time and reset with a power cycle.

  • Page 51: Control States

    Model 750S1G6C CONTROL STATES This section defines the various control software states required for this amplifier. An example of typical control states is shown below. The subsections below, define any special responsibilities of the control system. One example would be to state that when transitioning from the RF ON state to the POWER OFF state, care must be taken to remove the bias voltage from the power modules before disabling the main power supplies.

  • Page 52: Control Lines

    Model 750S1G6C CONTROL LINES This section defines all required control lines to be utilized by the control software and any actions (faults or alerts) that the control software must perform. In the tables below, indicate the NO ACTION STATES (or the correct operating states) of each line required and any actions that are required if the line is out of bounds.
  • Page 53 Model 750S1G6C 2.8.1.3 Connector J5 Lines 3, 4: Supplies +3.3 Vdc via a 10kOhm pull-up resistor Lines 1-4: Guaranteed operation up to +30 Vdc Lines 3, 4: 0 Vdc or +3.3 Vdc TTL Inputs & OD Outputs: Guaranteed operation up to +5 Vdc...

  • Page 54: Switch Breakout Board (A29)

    Model 750S1G6C 2.8.2 Switch Breakout Board (A29) 2.8.2.1 Connector J9 Indicate a range representing a NO ACTION STATE (i.e. +1.2 Vdc << +2.3 Vdc) Notes Once activated, inputs are checked for all following control states Guaranteed operation between 0.0 Vdc and +3.3Vdc (damage occurs outside this range)

  • Page 55: Fault Definition

    Model 750S1G6C 2.8.2.3 Connector J5 Lines 3, 4: Supplies +3.3 Vdc via a 10kOhm pull-up resistor Lines 1-4: Guaranteed operation up to +30 Vdc Lines 3, 4: 0 Vdc or +3.3 Vdc TTL Inputs & OD Outputs: Guaranteed operation up to +5 Vdc...
  • Page 56 Model 750S1G6C Fault Details Drop to Inhibit? RF OFF? Control  = Yes  = Yes Line Fault Text Description (<15 Characters) No Fault A25A3 J5-32 0x0001 Interlock Interlock   A25A3 J5-31 0x0002 AC Interlock AC Interlock  ...

  • Page 57: No-Fault Control Actions

    Model 750S1G6C Fault Details Drop to Inhibit? RF OFF? Control  = Yes  = Yes Line Fault Text Description (<15 Characters) J5-19 0x040f 1039 Thermal A19 Thermal Fault, Module A19   J5-20 0x0410 1040 Thermal A20 Thermal Fault, Module A20 ...

  • Page 58: 2.10 Remote Control Interfaces

    Model 750S1G6C 2.10 REMOTE CONTROL INTERFACES This section describes remote operation of the amplifier using the provided General Purpose Interface Bus (GPIB), RS-232 serial port, fiber-optic serial ports, Universal Serial Bus (USB), and Ethernet port. All ports are always active; however, only one port may be used at a time.

  • Page 59: Fiber-Optic Serial Communications

    Core Size: 50um (minimum) to 200um (recommended) Connector Type: This port can be used in conjunction with a serial to fiber-optic or USB to fiber-optic interface, such as an AR IF7001 USB to Fiber-Optic interface. *NOTE: The IF7001 device uses SMA connectors, a fiber-optic cable is needed with ST connectors on one end and SMA connectors on the other.

  • Page 60: Ethernet Communications

    Once installed, the DeviceInstaller™ utility will scan the network and find all connected Lantronix Ethernet devices. This list of found devices will include any connected AR Ethernet devices. By selecting one of the connected devices from the list, its IP address and subnet mask can be changed along, with several other settings.

  • Page 61: Power On/Off

    Model 750S1G6C 2.11.1 Power On/Off This command controls the power state. No other command will be accepted until the POWER:ON command has been issued. It is good practice to wait a minimum of two (2) seconds before polling the status after issuing the POWER:ON command.

  • Page 62: Power Indicator Frequency

    Model 750S1G6C 2.11.5 Power Indicator Frequency This command sets the current frequency used to correct the forward and reverse power indicators shown on the display. The correction factors used by this feature are set from the factory and stored in non-volatile memory.

  • Page 63: Alc Mode

    Model 750S1G6C 2.11.7 ALC Mode This command sets the mode of the Automatic Leveling Control (ALC) feature to either a default mode (MANUAL) or a user-configurable mode (ALC INT). In the default mode (MANUAL), the ALC Detector Gain, ALC Response, and ALC Threshold settings do not affect the operation of the ALC feature because factory settings are used instead.

  • Page 64: Alc Response Setting Adjust

    Model 750S1G6C 2.11.10 ALC Response Setting Adjust This command sets the ALC response setting. Adjusting this setting changes the ALC’s response time when reacting to a detected increase in the RF Output that exceeds the ALC Threshold Level. LEVEL:RESP<resp setting>...

  • Page 65: Machine State Query

    Model 750S1G6C 2.11.13 Machine State Query This command queries the RF gain, detector gain, ALC threshold, and ALC response time. MSB? Query: RF<space>GAIN=<rf_gain>,DT<space>GAIN=<det_gain>,THRES=<alc_th Response Format: resh>,RESP=<resp><LF> The RF Gain setting (0-100%), padded with leading spaces to be 3 characters <rf_gain>: <det_gain>:...
  • Page 66 Model 750S1G6C Each hexadecimal character represents a 4-bit binary number, allowing for a total of 16 binary flags that can be used to indicate various states of the amplifier. The definition of what each bit of information represents can be found in the Amplifier State Response Table below. For help converting the ASCII characters into binary Hex Character to Binary Bits table.

  • Page 67: Forward Power Query

    Model 750S1G6C 2.11.15 Forward Power Query This command queries the internally detected forward power (values are corrected and linearized). FPOW? Query: FPOW=<power><LF> Response Format: The detected forward power (0-99999) in Watts (value is always five <power>: characters, padded with spaces).

  • Page 68: Faults Query

    Model 750S1G6C 2.11.19 Faults Query This command queries information about a currently active fault. FSTA? Query: FSTA=<space><status><LF> Response Format: A hexadecimal number (0000 to FFFF), padded with zeros to always be 4 <status>: characters wide. Example: To query the fault status, send the following command: FSTA?<LF>...

  • Page 69: Read Fault Log Count

    Model 750S1G6C 2.11.22 Read Fault Log Count Use this command to query the total number of faults currently stored in the fault log. FSTA:LOG:COUNT? Query: <count><LF> Response Format: <count>: A decimal number between 0 and 200 To query the fault log count, send the following command: Example: FSTA:LOG:COUNT?<LF>...

  • Page 70: Alc Board Firmware Query

    Model 750S1G6C 2.11.25 ALC Board Firmware Query This command queries the firmware of the ALC board assembly. *ALC? Query: ALC_SW_REV<revision><LF> Response Format: The revision of the ALC Board. <revision>: Example: To query the ALC Board firmware revision, send the following command: *ALC?<LF>...

  • Page 71: System Serial Number Query

    Model 750S1G6C 2.11.28 System Serial Number Query This command queries the serial number of the system. Query: <number><LF> Response Format: The serial number of the amplifier (6 to 8 characters). <number>: Example: To query the serial number, send the following command: SN?<LF>...
  • Page 72 Model 750S1G6C Rev E...

  • Page 73: Theory Of Operation

    3. THEORY OF OPERATION INTRODUCTION The Model 750S1G6C RF amplifier consists of a 1–6 GHz RF amplifier assembly. The RF amplifier assembly consists of a Pre-Amplifier (Pre-Amp), one (1) Quadrature-Coupled Amplifier (Quad Amp) used as a driver one (1) high power Quad amp, (1) 4-Way Splitter, (4) additional high power Quad amps, (1) 4:11 Way Combiner/Splitter (11) high power Quad amp finals, (1) 11-way Combiner and Directional Coupler assembly.

  • Page 74: A3, A5-A8 And A10-A20 Quad Amp, High Power

    Model 750S1G6C 3.2.3 A3, A5-A8 and A10-A20 Quad Amp, High Power The power module operates on a dual supply of VGG = -8V and VDD = +24V, with a VDD draw of 11.5 amps and VGG draw below 0.1 amps. Power-on sequence is to apply VGG first, and then VDD, reversing this sequency for power-off.

  • Page 75: Power Supplies (Ps1 Through Ps5)

    Model 750S1G6C POWER SUPPLIES (PS1 THROUGH PS5) PS1 is a multiple output supply. +5V and -15V is fed to the A31 Regulator Assembly. The Regulator Assembly supplies -5V, -12V and +15V to the A1 Preamplifier. -5V is also supplied to the A2 Quad Amplifier.
  • Page 76 Model 750S1G6C Rev E...

  • Page 77: Maintenance

    4. MAINTENANCE GENERAL MAINTENANCE INFORMATION The Model 750S1G6C requires very little maintenance since it is a relatively simple instrument. It is built with etched circuit wiring and solid-state devices that will ensure long, trouble free life; however, should trouble occur, special care must be taken in servicing to avoid damage to the devices or the etched circuit board.

  • Page 78: Troubleshooting

    GaN HEMTs and other ESD-sensitive devices. Troubleshooting the Model 750S1G6C in a logical manner can speed the solution to a problem. The settings of potentiometers (pots), capacitors (caps), or other variables should not be disturbed until other problems have been eliminated.

  • Page 79: General - Reading Faults

    RF energy when these doors are opened. NOTE: The Model 750S1G6C is shipped with a mating connector, which has a jumper between Pins 1 and 8 and 10 and 14, installed in the rear panel interlock connector. The unit will not operate unless the interlock circuit is closed.

  • Page 80: Power Supply Faults (Schematic 10050484)

    Model 750S1G6C 4.3.4.1 Interlock Fault 1. In the event of an Interlock Fault, the front panel display should read INTERLOCK FAULT. 2. Check to see if it is safe to be power up the unit—are there personnel present in the screen room, or are doors to the screen room open? 3.

  • Page 81: Alc Fault

    Model 750S1G6C 4. Verify the correct voltages to the modules. Troubleshoot any incorrect voltages. 5. A2: C2 = +24 ± 0.2V C1 = -5 ± 0.3V C3=logic high (no fault) A3: FL1, FL2 = +24 ± 0.2V FL4 = -8V ±0.3 V FL3=logic high (no fault) 4.3.7...

  • Page 82: Low Or No Power Output (Rf Test) (Diagram 10050484)

    1. The Model 750S1G6C’s typical gain response at -20 dBm input and 0 dBm input is shown in Figures 4-1 and Figure 4-2. The actual gain may vary considerably from that shown in these figures but should be ≥ 59 at -20 dBm input and ≥...

  • Page 83: Typical Response @ 0 Dbm Input

    Model 750S1G6C Figure 4-2. Typical Response at 0 dBm Input Rev E...
  • Page 84 Model 750S1G6C Rev E...
  • Page 85 These modules are not field-repairable and should never be opened outside of AR’s Microelectronics Lab. The modules in these product lines have a security label on two sides of the modules between the housing and lid/cover. If the security label is removed and or cut, the warranty of the module will be voided.

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