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Maintenance | 53

SECTION 5: MAINTENANCE

PREVENTIVE MAINTENANCE

The redundant amplifier assembly is of a completely solid state design. Normal periodic inspection for cleanliness and

mechanical integrity should be made in accordance with standard procedures.

To prevent long and costly downtime of the 1:1 Redundant Line Amplifier System, periodic monitoring of the overall

performance parameters that are most indicative of individual amplifier performance is necessary. A log should be

maintained that provides a permanent record of Line Amplifier performance and compares it to factory provided data. By

doing so, any long term degradation, erratic or abnormal performance can be detected early. The overall Line Amplifier

parameters that are most indicative of individual system component performance is the channel gain, noise figure,

switching functions and power supply voltage.

Any excessive change in Line Amplifier gain or noise figure indicates a malfunction in the performance of the RF signal

components. A failure in switch operation may be due to a faulty switch or switch driver failure.

DC VOLTAGE

The power supply voltages can be monitored through the amplifier system front panel LCD and user interface. If a voltage

is beyond tolerance reset the power supply using the tuning adjustment located on the top of the power supply.

GAIN OF THE REDUNDANT LINE AMPLIFIER ASSEMBLY

The following procedure is to be followed for gain measurements:

Connect the test equipment as shown in Figure 5-1.

Set the sweeper to cover the required input frequency range.

Set the attenuator on the log memory scope to 000 and memorize the input reference.

Connect the 1:1 Redundant Line Amplifier System to the test setup and measure the desired channel.

Record the gain of the Signal Channel.

The gain of the 1:1 Redundant Line Amplifier System should be periodically monitored to reveal deviations which would

indicate a possible malfunction.

Figure 5-1. Test Setup for Gain, Gain Ripple and Frequency Response Measurement

CORRECTIVE MAINTENANCE

If the 1:1 Redundant Line Amplifier System malfunctions during normal use or it the test mentioned in the previous section

reveals excessive discrepancies in amplifier performance, isolation and correction of the malfunction becomes necessary.

While it is difficult to fully anticipate and describe all possible failure modes in a complicated electronic system, this manual

contains sufficient information in the form of theory of operation and diagrams to enable an experienced technician to

isolate and remove the malfunctioning module. In addition, power supply failures can be corrected on the station level.

•

PROPER GROUNDING PRECAUTIONS

ARE REQUIRED AT ALL TIMES TO

PREVENT DAMAGE FROM ESD WHILE

HANDLING THIS UNIT

Oscilloscope

or Log Memory

Scope

Detector

Redundant

Amplifier

System

Stepped

Attenuator

Sweep

Generator

Содержание RL1-095145

Страница 1: ... Input Level Control Option 4 Output Level Control Option 11A 15 dBm output power at 1 dB compression Option 11B 20 dBm power at 1 dB compression Option 16A 40 dB minimum gain Option 16B 50 dB minimum gain Option 17C RS232 Remote Control Option 17D Contact Closure Remote Control Option 17H Ethernet Remote Control Option N Female RF Input Output Connectors 100 Davids Drive Hauppauge New York 11788 ...

Страница 2: ...ADDED ESD WARNING TO SECTIONS 2 AND 5 SECTION 3 3 2 6 2 SET SLOPE SCREEN ADDED TO MAIN MENU LIST SECTION 3 3 2 6 11 ATTENUATION SCREEN COMPLETELY REVISED SECTION 3 3 2 6 11 CHANGE ATTENUATION COMPLETELY REWRITTEN ADDED SECTION 3 3 2 6 12 SET SLOPE SCREEN ALL REMAINING 3 3 2 6 SECTIONS RENUMBERED AS PER ADDITION SECTIONS 3 4 ATTENUATION OPERATION AND 3 5 SLOPE OPERATION ADDED ALL REMAINING SECTIONS...

Страница 3: ...UMBERED ALL QUERY COMMAND SECTIONS FOLLOWING THIS ONE ADDED SLOPE TO REMOTE QUERY AND REMOTE SET COMMAND CHARTS SECTION 3 8 1 5 CHANGED a A1 A4 TO a Amplifier number 1 4 ADDED SECTION 3 8 3 REMOVED TEST EQUIPMENT 7 12 07 REV H TO REV J MANUAL REDESIGNED IN ADOBE INDESIGN SECTION 3 COMPLETELY RE WROTE COMMAND CODE SECTION AND ADDED ETHERNET SECTION BLOCK DIAGRAM 133232 REV G TO REV J 12 4 08 REV J ...

Страница 4: ...ERATING MODES 7 AUTO MODE 7 MANUAL MODE 7 LOCAL MODE 7 REMOTE MODE 7 FRONT PANEL 8 STATUS INDICATORS 8 FRONT PANEL OPERATIONS 8 Keypad Navigation 8 Liquid Crystal Display 8 Beep Operations 8 Display Timeout 9 Cursor Operations 9 Menus and Screens Operation 9 Default Screen 9 Main Menu 9 On Line Standby Screen 10 Current Monitor Screen 11 Voltage Monitor Screen 11 Current Limit Screen 11 Remote For...

Страница 5: ...ring Internet Protocol IP Operating Parameters 31 Configuring via Ethernet 32 Access via SNMP 40 SNMP Command Structure 40 Access via Telnet 42 EMERGENCY OPERATION 43 SHUTDOWN PROCEDURE 43 SECTION 4 PRINCIPLES OF OPERATION 44 INTRODUCTION 44 FUNCTIONAL DESCRIPTION 44 SUBSYSTEMS AND COMPONENTS FUNCTIONAL DESCRIPTION 47 CONTROL BOARD ASSEMBLY A4A1 47 CONTACT CLOSURE REMOTE INTERFACE BOARD A4A3 CONTA...

Страница 6: ...15 Figure 3 17b Attenuation Screen RL systems with slope equalization 15 Figure 3 18 Set Slope Screen 16 Figure 3 19 Alarm Menu 17 Figure 3 20 Remote Local Screen 18 Figure 3 21 Manual Auto Screen 18 Figure 3 22 Login Screen 33 Figure 3 23 Home Screen 34 Figure 3 24 Communications Screen 35 Figure 3 25 Time and Date Screen 36 Figure 3 26 Miscellaneous Settings Page 37 Figure 3 27 Event Log Page 38...

Страница 7: ... the amplifier will return to its original settings when power is restored The remote interface provides control and status of the amplifier unit from a remote location FEATURES Fault tolerant design Fully redundant hot swappable power supplies Remote control via RS485 or RS422 user selectable Automatic manual control from both local and remote mode Remote status Off line input output access Ampli...

Страница 8: ... dimensions 19 x 1 75 panel height x 20 maximum Connectors RF SMA female 3 5 mm compatible 22 GHz Summary alarm DEM 9P Remote interface DEM 9S for RS485 RS422 DB 25P for RS232 DC 37S for Contact Closure 919099 65 for Ethernet Primary power input IEC 320 A4A4 A4A5 A4A6 A1A1 A1A3 A1A2 A4A1 A4A13 A4A3 Hidden A2A2 A2A5 A2A4 A2A3 A2A1 A2A6 Hidden ...

Страница 9: ...nput Return Loss Input Output Impedance 30 dB minimum 40 dB minimum Option 16A 50 dB minimum Option 16B 0 4 dB any 40 MHz 1 0 dB peak to peak up to 500 MHz 1 5 dB peak to peak up to 800 MHz 2 0 dB peak to peak greater than 800 MHz 0 2 dB 10 MHz maximum 0 2 dB 24 hours constant temperature 10 dBm minimum 15 dBm minimum Option 11A 20 dBm minimum Option 11B 2 dB maximum 3 dB maximum 4 dB maximum 5 dB...

Страница 10: ...pment MOUNTING Slides are provided for mounting in a standard 19 equipment rack TURN ON PROCEDURE After mounting make all external connections per Table 2 1 Refer to next subsection for proper system configuration Refer to Section 1 for the physical configuration of the 1 1 Redundant Line Amplifier System Apply power to the equipment using the power On Off switches located on the rear panel of the...

Страница 11: ...indicating the status of the unit and also it s power supplies Ground Lug Connect the ground lug on the rear panel of the equipment to the Protective Earth connection of the building AMPLIFIER REPLACEMENT PROCEDURE A replacement amplifier can have different current high and low limits even if it is otherwise identical to the failed amplifier Refer to the amplifier data sheet for it s ambient curre...

Страница 12: ...imits only when an amplifier is being replaced in the field PRIMARY AMPLIFIER A Primary Amplifier is intended to remain On Line during normal operation If a Primary Amplifier fails and the backup amplifier is available the Primary Amplifier will be switched into Standby and the Backup Amplifier will be switched On Line in its place In a 1 1 configuration Amplifier A1 is the Primary Amplifier In a ...

Страница 13: ...EMOTE mode Amplifier faults are still monitored and reported but they will have no effect on the On Line Standby status LOCAL MODE When the RAU is in LOCAL control mode operational functions and parameters can be controlled and entered from the front panel Remote control of these functions and parameters is locked out However the control unit will still respond to remote monitoring of RAU operatio...

Страница 14: ...entry must be confirmed with an ENTER key press Any exceptions e g Attenuation Contrast will be noted in that section Menu Key Brings up Main Menu or escapes out of current mode If a change is pending needs confirmation this key cancels the change without implementing it When the unit is not waiting on a confirmation or screen has nothing that can be changed the Menu key displays the Main Menu Rem...

Страница 15: ...ault Screen The default screen displays the redundancy configuration and model number of the unit At start up the unit defaults to this screen In addition if another screen is active and a 50 second time period expires without any key presses the unit will default to this screen If a new alarm has been logged a message is briefly displayed on the default screen This message will expire after any k...

Страница 16: ...n Line Standby Screen If not already displayed use the MENU and arrow keys to select the ON LINE STANDBY screen then press ENTER Figure 3 4 On LIne Standby Screen To Change On Line Standby Status Point the arrow cursor to the desired amplifier status The UP and DOWN keys move the arrow cursor IF that amplifier is not on display for the 1 2 and Dual 1 1 models only the other amplifier s may be reac...

Страница 17: ...or Screen If not already displayed use the MENU and arrow keys to select the VOLTAGE MONITOR screen then press ENTER Slight variation should be expected Figure 3 6 Voltage Monitor Screen This screen updates to provide the latest readings from the voltage monitors of the power supplies The two digit fields on the left side of the LCD indicate the measured voltage of the 5 5V source The three digit ...

Страница 18: ...pped with the Contact Closure option as the remote bus interface Change Address ADDR RS232 RS422 RS485 and IEEE 488 Options Only Use LEFT RIGHT UP and DOWN keys to navigate the cursor to the after ADDR While the cursor is blinking the UP and DOWN keys can be used to change the address 0 30 for IEEE 488 and 64 95 for RS232 RS422 or RS485 RIGHT and LEFT keys still move the cursor horizontally and ca...

Страница 19: ...creen Dynamic IP Address Press the LEFT or RIGHT arrow key to highlight the IP Address field on the display Use the UP and DOWN arrow keys to scroll the numeric values entering zero for each digit in each octet of the IP Address Press ENT to accept the choice The display will remain at 000 000 000 000 but the unit will be assigned a Dynamic Address by the system Press the UP or DOWN arrow keys to ...

Страница 20: ...s until the desired password is set Press ENT to save the Password Press the UP or DOWN arrow keys to scroll to the next or the previous display Contrast Adjust Screen If not already displayed use the MENU and arrow keys to select the CONTRAST ADJUST screen then press ENTER Figure 3 14 Contrast Adjust Screen Changes to the contrast are accepted without the need for the ENTER key to be pressed Chan...

Страница 21: ... without being effected by the interruption Change the Time or Date Point the arrow cursor to either the Time or Date by using the UP and DOWN keys Use the RIGHT key to select that line UP and DOWN keys change the digit presently under the blinking cursor RIGHT and LEFT keys move the cursor horizontally If the cursor is moved all the way to the left the cursor will turn into an arrow any pending c...

Страница 22: ...irm Set Slope Screen If not already displayed use the MENU and arrow keys to select the SET SLOPE screen then press ENTER Figure 3 18 Set Slope Screen Exact screen format varies by model type Change Slope 1P represents slope adjustment applied to Amp 1 when in the Primary Path 1S represents slope adjustment applied to Amp 1 when in the Standby Path 2P represents slope adjustment applied to Amp 2 w...

Страница 23: ...To View Events If there are no events logged then the user will not be able to access the EVENT sub screen The events are ordered chronologically the most recent event will have the highest number and be displayed first Point the arrow to EVENTS using the UP DOWN LEFT and RIGHT keys Press ENTER key to select The display will read There is one screen for each event in the Event Log press the UP and...

Страница 24: ...do not have slope equalization attenuation is associated with the Online path and is independent of amplifier switching in that path In units that do have slope equalization attenuation is applied to both the Online and Standby paths and is not independent of amplifier switching in that path Attenuation settings are stored in nonvolatile memory and at startup they are reset to their last set value...

Страница 25: ...ny SET commands will be ignored and the unit will respond with and error code The response time from command to acknowledge is 100 ms maximum Since all bytes are ASCII printable characters a compatible terminal may be used to control the equipment or monitor traffic on the communication bus SERIAL MESSAGE FORMAT The serial message format is as follows HEADER ADDRESS COMMAND ERROR CODE PARAMETERS T...

Страница 26: ...checksum calculation return the checksum character for the message in array subtract 32 from each character before taking modulo 95 sum add 32 to the final sum mes_len message length char check_sum char array char mes_len char i sum for i 0 sum 0 i mes_len i sum array 32 sum 95 return sum 32 ...

Страница 27: ...I Amplifier Priority 1 2 unit only SLP Slope SWT On line Standby Status cmd same as P query same as S VLT Voltage and Current Readings ERROR Codes ASCII Character Function a Command not recognized b Illegal parameter or parameter out of range c Unit in Local mode d Busy SYSTEM FAULT STATUS ALR there is no SET command The QUERY command requires no parameters Command Parameters Remote Command Sequen...

Страница 28: ...ommand Parameters Remote Command Sequence ATTn Unit Response ATTnTttt n attenuator path number T attenuation indicator ttt attenuation in tenths of a dB For a 1 1 system with Input Attenuator n 1 Input Attenuator For a 1 1 system with Output Attenuator n 1 Output Attenuator For a 1 1 system with Input and Output Attenuators with no Slope n 1 Input Attenuator n 2 Output Attenuator For a 1 1 system ...

Страница 29: ...Response CLKYyyyyMmmDddHhhNnnSss Y Year indicator yyyy Year four digit ASCII numeric characters MSD transmitted first LSD last M Month indicator mm Month two digit ASCII numeric characters D Day indicator dd Day two digit ASCII numeric characters H Hour indicator hh Hour two digit ASCII numeric characters N Minute indicator nn Minute two digit ASCII numeric characters S Second indicator ss Second ...

Страница 30: ...s maximum Additional events will cause the oldest events to be aged out Command Parameters Remote Command Sequence LOGgg Unit Response LOGggCYyyyyMmmDddHhhNnnSssEeee gg Two digit ASCII numeric characters MSD transmitted first LSD last Indicating the log entry queried C Calendar Clock indicator Y Year indicator yyyy Year four digit ASCII numeric characters MSD transmitted first LSD last M Month ind...

Страница 31: ...tch2 Fault Recovery 36 Switch3 Fault Recovery 37 Switch4 Fault Recovery 38 Power Supply A Fault 39 Power Supply A Fault Recovery 40 Power Supply B Fault 41 Power Supply B Fault Recovery 42 Remote Local Control Mode Change 43 49 Reserved for future use REDUNDANCY MODE MOD The SET command requires one parameter a single digit in length representing the redundancy mode indicator Command Parameters Re...

Страница 32: ...git representing the path number The second parameter is a single ASCII character representing the sign of the slope The third parameter is two ASCII characters in length representing the magnitude of the slope in tenths of a dB Command Parameters Remote Command Sequence SLPnsbb Unit Response SLP The QUERY command requires one parameter The parameter is a single ASCII digit representing the path n...

Страница 33: ...ine A1 Standby Dual 1 1 a 1 A1 On line A2 Standby a 2 A2 On line A1 Standby a 3 A3 On line A4 Standby a 4 A4 On line A3 Standby 1 2 a 1 A1 On line A2 On line A3 Standby a 2 A1 Standby A2 On line A3 On line a 3 A1 On line A2 Standby A3 On line The QUERY command requires no parameters Command Parameters Remote Command Sequence SWT or S Unit Response SWTa b or Sa b 1 1 a 0 A1 On line A2 Standby a 1 A...

Страница 34: ... high 999 ma Remote Command Sequence A LIM2L000H999 Unit Response A LIM b B Query Alarm Status Combined The unit returns that there are no Alarms Remote Command Sequence A ALR z Unit Response A ALR000 K RS422 BUS TERMINATION A jumper selectable 120 ohm termination resistor is connected across the DATA IN and DATA OUT terminals Installing E1 places the resistor across the DATA OUT terminals and E2 ...

Страница 35: ...ORMAL 7 13 25 A2 FAULT 25 13 7 SIGNAL FRAME GROUND 4 Dual 1 1 Status Output Connector Contact Closure Option Only J2 Pin designations are indicated in Figure 3 3 TABLE 3 3 DUAL 1 1 STATUS OUTPUTS CONTACT CLOSURE J2 DESCRIPTION COMMANDS CLOSED COMMON OPEN A1 ONLINE A2 STANDBY 20 26 1 A2 ONLINE A1 STANDBY 1 26 20 A3 ONLINE A4 STANDBY 32 36 14 A4 ONLINE A3 STANDBY 14 36 32 AUTO 27 2 8 MANUAL 8 2 27 D...

Страница 36: ...UAL 7 6 5 DESCRIPTION STATUS A1 A2 ONLINE A3 STANDBY 8 11 9 10 A2 A3 ONLINE A1 STANDBY 9 11 8 10 A1 A3 ONLINE A2 STANDBY 10 11 8 9 LOCAL 26 27 28 REMOTE 28 27 26 AUTO 29 30 31 MANUAL 31 30 29 SYSTEM NORMAL 25 24 23 SYSTEM FAULT 23 24 25 A1 NORMAL 14 13 12 A1 FAULT 12 13 14 A2 NORMAL 17 16 15 A2 FAULT 15 16 17 A3 NORMAL 22 21 20 A3 FAULT 20 21 22 SIGNAL FRAME GROUND 36 Remote Interface Connector J2...

Страница 37: ... with the computer see Page 31 Table 3 6 Ethernet Cable Wiring Setup Setup of the Ethernet Interface should be attempted only after the unit is fully installed and functioning in accordance with the Operation and Maintenance O M Manual Once operating the Ethernet Interface may be configured Configuring Internet Protocol IP Operating Parameters An Internet Protocol IP address and associated paramet...

Страница 38: ...hether a connection was established ACCESSING THE SYSTEM Access via the Web Interface All system settings may be may be queried or modified via the Web Interface The web page designs have been optimized for the use with the Microsoft Internet Explorer MSIE Version 5 0 web browser or higher Use of Cookies must be enabled see the TOOLS INTERNET OPTIONS PRIVACY setting Web access may function properl...

Страница 39: ...logo along with the model number of the unit is displayed all pages Function Name Description Mode Select between Auto and Manual Redundancy Modes Remote Show the current Control Mode Amplifier Fault Show Amplifier Fault Status Switch Fault Show Switch Fault Status Power Supply Fault Show Power Supply Fault Status ...

Страница 40: ...n 34 Figure 3 23 Home Screen Home Page Function Name Description Amplifier Status Select Show Online and Standby Amplifier Paths Amplifier Currents Show Amplifier Currents Current Limits Set Amplifier Currents ...

Страница 41: ...s changing this value will reset the system IP Subnet Mask View or set the system IP Subnet Mask changing this value will reset the system IP Gateway View or set the system IP Gateway changing this value will reset the system System Contact View or set the SNMP System Contact parameter System Name View or set the SNMP System Name parameter System Location View or set the SNMP System Location param...

Страница 42: ...Time and Date Screen The unit is equipped with a real time clock which can be adjusted from the Time Page Simply use the pull downs to adjust the display for the desired settings pull down the unlock tab and submit the changes ...

Страница 43: ... Un lock All Pages Disables the screen locked function at each page Alarm Refresh Rate View or set how frequently the alarm indications will be refreshed on the Logs page Web Timeout View or set the time before a web user is logged off due to inactivity Old Password New Password Confirm New Password Update the system password 1 5 digits All three values must be entered If the old password does not...

Страница 44: ...he events stored in the event log The event log can be cleared by unlocking the screen and pressing the clear log button Log Page Function Name Description Log Listing View a listing of all system log entries Clear Logs Clear the system log Logout The user is logged off the system ...

Страница 45: ...Operation 39 Figure 3 28 Logout Page Pressing the Logout button will end the session and the page shown above will appear on the browser screen ...

Страница 46: ... 3 6 1 4 1 14994 1 4 r w Trap repetition rate ipAddr 1 3 6 1 4 1 14994 1 5 r w IP address for the system ipSub 1 3 6 1 4 1 14994 1 6 r w IP subnet mask for the system ipGate 1 3 6 1 4 1 14994 1 7 r w IP gateway address for the product firmwareLoad 1 3 6 1 4 1 14994 1 8 r w Permit remote firmware upgrading telnetEnable 1 3 6 1 4 1 14994 1 9 r w Permit system access via Telnet loginTimeout 1 3 6 1 4...

Страница 47: ...517 1 10 r w set get amplifier priority 1 2 unit only slope 1 3 6 1 4 1 14994 25 171517 1 11 r w set get slope using amp select value slopeDirect 1 3 6 1 4 1 14994 25 171517 1 12 w o set slope using amp path and slope value in cmd status 1 3 6 1 4 1 14994 25 171517 1 13 r o get system status swPos 1 3 6 1 4 1 14994 25 171517 1 14 r w set get On line Standby switch position voltage 1 3 6 1 4 1 1499...

Страница 48: ...reasons When a Telnet connection is established the Converter will request the password which should be sent in the standard MITEQ wrapper address byte ignored password checksum byte The default password is five numerical ones and can be type in as 11111 Figure 3 29 Opening Telnet Port Figure 3 30 Telnet Communications Once the connection is established standard serial commands may be sent and res...

Страница 49: ...ON In the event of a failure in LCL components refer to Section 5 to determine possible causes remedies SHUTDOWN PROCEDURE The Local Control Unit and Redundant Amplifier Assembly are completely shut down when the AC power is removed ...

Страница 50: ...7 FUNCTIONAL DESCRIPTION The 1 1 Redundant Line Amplifier System is equipped with fully redundant hot swap power supplies They are designed to allow a fault to be repaired and or routine maintenance to be performed without disruption of signal transmission The Redundant Amplifier Assembly consists of two amplifiers one on line A1 and one in standby mode A2 A fault condition in an on line amplifier...

Страница 51: ...Principles of Operation 45 Figure 4 1 Block Diagram Local Control Unit ...

Страница 52: ...Principles of Operation 46 Figure 4 2 Block Diagram Redundant LNA Unit ...

Страница 53: ...ps below 4 5V It also contains a watchdog timer which must be periodically reset by the microprocessor Failure to do so indicates a circuit failure and causes a reset pulse to be generated The analog section monitors the DC voltage fault levels for the power supplies and the current sensor interface CONTACT CLOSURE REMOTE INTERFACE BOARD A4A3 CONTACT CLOSURE OPTION ONLY The Contact Closure Interfa...

Страница 54: ...91 5 725 6 725 0 4 1 2 1 20 SMA female RL1 584643 111907 4 5 845 6 425 0 3 1 2 1 23 SMA female RL1 640720 122280 6 4 7 2 0 3 1 2 1 23 SMA female RL1 725840 117660 7 0 8 5 0 4 1 2 1 20 SMA female RL1 107128 111895 10 7 12 75 0 3 1 2 1 23 SMA female RL1 137148 122551 12 7 15 0 0 4 1 2 1 20 SMA female RL1 177212 133049 17 7 22 0 0 5 1 2 1 20 SMA female RL1 177220 133049 17 7 22 0 0 5 1 2 1 20 SMA fem...

Страница 55: ...1 75 0 95 2 15 1 50 1 80 2 00 2 70 3 40 4 20 4 50 4 80 5 725 6 725 5 845 6 430 6 40 7 20 7 25 8 40 10 70 12 75 13 75 14 8 17 70 21 20 17 70 22 00 27 50 31 00 31 00 33 00 Noise Figure Below 4 2 GHz 4 2 12 75 GHz 12 75 14 5 GHz Above 14 5 GHz 2 dB maximum 3 dB maximum 4 dB maximum 7 dB maximum Gain 37 dB minimum 47 dB minimum Option 16A 57 dB minimum Option 16B Gain Flatness 0 3 dB p p any 40 MHz 0 ...

Страница 56: ...A female RL1 177220 136040 1 TBD TBD TBD TBD TBD RL1 275310 136040 2 TBD TBD TBD TBD TBD RL1 310330 136040 3 TBD TBD TBD TBD TBD ISOLATORS A2A8 Model Number Part Number Frequency GHz Insertion Loss dB VSWR 50 Ohms Isolation dB min Connectors RL1 095145 116853 2 0 95 1 45 0 4 1 15 1 20 SMA female RL1 095175 116853 5 0 95 1 75 0 4 1 15 1 20 SMA female RL1 095215 127169 0 95 2 05 0 4 1 15 1 23 SMA fe...

Страница 57: ...RL1 177220 135962 Ka2 17 70 22 00 2 0 1 30 1 5 RL1 275310 135962 Ka3 27 50 31 00 2 0 1 30 3 5 RL1 310330 135962 Ka4 31 00 33 00 N A 30 3 5 ISOLATORS A2A12 Model Number Part Number Frequency GHz Insertion Loss dB VSWR 50 Ohms Isolation dB min Connectors RL1 095145 116853 2 0 95 1 45 0 4 1 15 1 20 SMA female RL1 095175 116853 5 0 95 1 75 0 4 1 15 1 20 SMA female RL1 095215 127169 0 95 2 05 0 4 1 15 ...

Страница 58: ...Principles of Operation 52 OUTPUT ATTENUATOR OPTION 4 ONLY PIN DIODE ATTENUATOR A2A13 See Table for Pin Diode Attenuator A2A11 ISOLATOR A2A14 See Table for Isolator A2A12 ...

Страница 59: ...wer supply GAIN OF THE REDUNDANT LINE AMPLIFIER ASSEMBLY The following procedure is to be followed for gain measurements Connect the test equipment as shown in Figure 5 1 Set the sweeper to cover the required input frequency range Set the attenuator on the log memory scope to 000 and memorize the input reference Connect the 1 1 Redundant Line Amplifier System to the test setup and measure the desi...

Страница 60: ...upply check the AC voltage input to the power supply Isolate the malfunctioning supply and remove it Check the power supply fuse and replace it if necessary If the AC input and fuse are good replace the power supply as described on Page 5 and adjust it to the proper voltage levels ...

Страница 61: ...ons 9 display timeout 9 keypad navigation 8 LCD 8 menus and screens alarm menu 17 attenuation screen 15 contrast adjust screen 14 current limit screen 11 current monitor screen 11 date time screen 15 default screen 9 ethernet parameter 13 main menu 9 manual auto screen 18 online stanby screen 10 priority screen 14 remote local screen 18 remote format screen 12 set slope screen 16 voltage monitor s...

Страница 62: ...nsor board 47 amplifiers 49 contact closure remote interface board 47 control board assembly 47 input attenuator 51 input monitor 50 isolators 48 output attenuator 52 output monitor 50 power supplies 47 power supply connector board 47 RF switch 48 W Wiring crossover cable 31 direct cable 31 Index ...

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