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Spectracom 8197, Инструкция по эксплуатации

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Spectracom 8197 Скачать руководство пользователя страница 35

_____________________________________________ Section 2:  Installation 

8197 Instruction Manual 

Page 2-11 

2.8 RECEPTION 

TROUBLESHOOTING 

Please review this section prior to calling the Spectracom Customer Service 
Department.  If the reception problem can not be solved following the guidelines 
outlined in this section, please call for Customer Service at 716.381.4827. 

2.8.1 No 

Reception 

Cable or connector problem

:  Measure the antenna cable resistance to verify 

the integrity of the cable and connectors.  Remove the antenna cable from the 
rear panel of the receiver and measure the resistance from the coax center to 
shield.  Refer to Table 2-2 for typical resistance values of the antenna and inline 
amplifier alone and when combined. 

DEVICE RESISTANCE 

8225 180 

ohms 

8227 165 

ohms 

8225 and 8227 

85 ohms 

TABLE 2-2   TYPICAL ANTENNA CABLE RESISTANCE VALUES 

Failed impulse suppressor

:  The Model 8226 has a high impedance when 

measuring from the center conductor to ground and a low throughput resistance.  
A failing impulse suppressor may be tripping prematurely.  The easiest way to 
test the Model 8226 is to temporarily replace it with a Type N barrel connector.  If 
the receiver begins tracking satellites within 20 minutes, the impulse suppressor 
has failed and must be replaced.  

Cable length

:  Excessively long or improper cable type may prevent the receiver 

from tracking satellites.  Refer to Section 2.2 for GPS cable recommendations.  

Antenna location

:  The antenna must be installed outdoors and have a good 

view of the sky.  Refer to Section 2.1 for antenna installation guidelines. 

GPS reset

:  In rare occasions, the GPS receiver may require a reset to set the 

receiver to default values.  The receiver must be placed in Test Mode to issue 
the GPS Reset command.  Issue the GPS Reset command, 

RGPS

, as shown 

below: 

 Type: 

TM ON <ent> 

The unit will respond with a message stating Test Mode has been enabled.  
During Test Mode operation, the Major and Minor alarms are asserted. 

Type: 

RGPS <ent> 

Содержание 8197

Страница 1: ...OSCILLATOR INSTRUCTION MANUAL SPECTRACOM CORPORATION 95 Methodist Hill Drive Suite 500 Rochester NY 14623 PHONE 585 321 5800 FAX 585 321 5219 REVISIONS IF ANY ARE LOCATED AT THE END OF THE MANUAL MAN...

Страница 2: ...will make the repairs or replacement of components and charge its then current price which buyer agrees to pay Spectracom shall not have any warranty obligations if the procedure for warranty claims i...

Страница 3: ...2 RS 485 Com 1 11 1 5 12 Input Power 1 12 1 5 13 Mechanical 1 12 1 5 14 Environmental 1 13 1 5 15 Model 8225 GPS Antenna Specifications 1 13 1 5 15 1 Electrical Specifications 1 13 1 5 15 2 Mechanical...

Страница 4: ...equency Outputs 3 6 3 2 2 1 Signature Control 3 6 3 2 2 2 Output Options 3 8 3 2 3 1544 kHz and 2048 kHz Timing Outputs 3 8 3 2 3 1 RS 485 Outputs 3 9 3 2 3 2 Major Alarm Contacts 3 10 3 2 4 Data Cloc...

Страница 5: ...LP 4 18 4 2 14 LOCATION 4 19 4 2 15 SIGNATURE CONTROL 4 20 4 2 16 SET MODE 4 21 4 2 17 STATUS INFORMATION 4 22 4 2 18 TIME 4 23 4 2 19 TEST MODE 4 24 4 2 20 TIME ZONE OFFSET 4 25 4 2 21 UTC TO GPS TIM...

Страница 6: ...8140TA Line Extender Amplifier 5 4 5 2 1 4 Model 8140MT MultiTap 5 5 5 2 2 Design of Distribution Networks 5 6 5 3 OPTION 06 12 8 MHZ OUTPUTS 5 8 5 4 OPTION 07 5 MHZ OUTPUTS 5 9 5 5 OPTION 08 1 MHZ O...

Страница 7: ...13 TABLE 3 5 RS 485 COM PIN ASSIGNMENTS 3 14 TABLE 3 6 DATA SYNC PIN ASSIGNMENTS 3 16 TABLE 3 7 ALARM OPERATION 3 19 TABLE 3 8 DC POWER CONFIGURATIONS 3 19 TABLE 4 1 ALPHABETICAL LIST OF RS 232 COMMA...

Страница 8: ...NECTOR 3 8 FIGURE 3 5 RS 485 OUTPUT 3 9 FIGURE 3 6 SINGLE ENDED CONNECTION 3 10 FIGURE 3 7 DATA CLOCK CONNECTOR 3 10 FIGURE 3 8 RS 485 LINE DRIVER 3 12 FIGURE 3 9 COM CONNECTOR 3 14 FIGURE 3 10 RS 485...

Страница 9: ...MODEL 8197 SECTION 1 GENERAL INFORMATION 1 0 INTRODUCTION 1 1 FEATURES 1 2 WARRANTY INFORMATION AND PRODUCT SUPPORT 1 3 MANUAL ERRATA AND SPECIAL DOCUMENTATION 1 4 UNPACKING 1 5 SPECIFICATIONS...

Страница 10: ...proven Ageless Oscillator technology provides continual automatic frequency control A long term averaging algorithm compensates for oscillator aging and temperature drift The Model 8197 is ideally su...

Страница 11: ...tracom continuously strives to improve its products and therefore greatly appreciates any and all customer feedback given Please direct any comments or questions regarding application operation or ser...

Страница 12: ...report shipping damaging immediately may forfeit any claim against the carrier In addition notify Spectracom Corporation of shipping damage or shortages to obtain a replacement or repair services Remo...

Страница 13: ...er Acquisition Sensitivity 105 dBm to 137 dBm Tracking Sensitivity 139 dBm Timing Accuracy 50 nanoseconds with SA on in Position Hold mode 1 5 2 Standard Frequency Outputs Signal 10 MHz sine wave deri...

Страница 14: ...ard Stability Locked Accuracy 24 Hour Average accuracy is typically 1 x 10 12 when locked to GPS Unlocked Accuracy Corrections are applied to the Rubidium oscillator based upon learned aging Holdover...

Страница 15: ...cation port 1 5 5 1544 kHz Timing Outputs Signal 1544 kHz derived from the GPS disciplined 10 MHz oscillator Connector RJ 11 rear panel Signal Level RS 485 Duty Cycle 50 2 Accuracy Typically 1 0 x 10...

Страница 16: ...synchronized within 500 nanoseconds of other Model 8195A 8197 receivers having the same 1PO offset The 9 6 kHz output is leading edge synchronized to within 150 nanoseconds of the Data Clock 1PPS out...

Страница 17: ...ption 06 12 8 MHz outputs changes the 64 kHz output to 50 kHz 1 5 9 Indicator Lamps Front panel LEDs when lit indicate the following Power Primary power source is connected and switched ON Tracking GP...

Страница 18: ...een disabled Short Gate Gate time is shortened for test purposes measurement resolution is reduced Minor Alarm A minor alarm is asserted when failures detected do not immediately affect output accurac...

Страница 19: ...ired Factory default is 1 minute This is a Minor Alarm that also extinguishes front panel TRACKING GPS lamp The AT1 Alarm resets upon acquisition of at least four qualified satellites for one minute A...

Страница 20: ...s NO NC and Common Contact Rating 30 VDC 250 milliamps 1 5 11 Communication Ports The Model 8197 has a front panel RS 232 and a rear panel RS 485 communication port The communication ports are used to...

Страница 21: ...IEC 320 C 13 rear panel DC Standby 24 VDC 5 10 Watts Powers the oscillator and GPS receiver whenever AC power is removed Fuse 2 Amp 250V Slo Blo Connector 6 position terminal block rear panel DC Power...

Страница 22: ...Hz Temperature Range 30 to 80 C 22 to 176 F Gain 30 dB Connector N type Female Recommended Cable RG 213 Maximum Cable Length 200 feet or 20 dB cable loss before additional preamplifier is required Pow...

Страница 23: ...__________________________________ Page 1 14 8197 Instruction Manual VSWR 1 1 1 or better Insertion Loss 0 1 dB maximum 1 5 17 Model 8227 Inline Amplifier Connectors Type N Female Gain 20 3 dB VSWR 1...

Страница 24: ...1 MODEL 8225 ANTENNA 2 2 ANTENNA CABLE 2 3 MODEL 8226 IMPULSE SUPPRESSOR 2 4 MODEL 8227 INLINE AMPLIFIER 2 5 MODEL 8195A PREPARATION FOR USE 2 6 INITIAL OPERATION 2 7 QUALIFYING THE INSTALLATION 2 8...

Страница 25: ...ring 3 5 inches in diameter 2 1 1 Antenna Installation The GPS antenna must be installed outdoors in a location where an unobstructed view of the sky exists Rooftops generally make good locations due...

Страница 26: ...s weather ability temperature range UV resistance and attenuation characteristics Do not allow the antenna cable to be placed in standing water as water may permeate through the coax jacket over time...

Страница 27: ...SE SUPPRESSOR Spectracom recommends the use of an inline coaxial protector for all products with an outside antenna Spectracom offers the Model 8226 Impulse Suppressor to protect the receiver from dam...

Страница 28: ...amplifier is required whenever GPS antenna cable lengths cause greater than 20 dB attenuation Using Spectracom CAL7xxx or Belden 8267 coax an amplifier is needed whenever antenna cable lengths exceed...

Страница 29: ...in Figure 2 5 represent Spectracom CAL7xxx cable The equivalent cable loss expressed in dB is provided for use with other cables Place the inline amplifier within 100 feet 10 dB cable loss of the ante...

Страница 30: ...receptacle NOTE The Model 8197 accepts the complete range of 90 to 264 VAC without a change in instrument setup Do not change the AC fuse or line voltage selector On AC powered units the DC power con...

Страница 31: ...chassis to a single point ground system may be required in some installations to ensure optimum lightning protection A separate earth ground is also recommended in installations where excessive noise...

Страница 32: ...formance and status logs provided by the receiver Commands to retrieve operational information are issued through the front panel RS 232 Comm port To communicate with the receiver a terminal or comput...

Страница 33: ...10 when in 3 D Fix mode and 0 0 when in Position Hold mode Quality A passed message indicates the receiver is tracking at least 4 qualified satellites A failed message indicates the received GPS signa...

Страница 34: ...00016 7 01004 8 02580 Q 03600 TIME 14 00 00 DATE 2000 03 21 QUALIFIED HISTOGRAM 0 00000 1 00000 2 00000 3 00000 4 00000 5 00000 6 00000 7 00067 8 03533 Q 03600 TIME 15 00 00 DATE 2000 03 21 QUALIFIED...

Страница 35: ...del 8226 has a high impedance when measuring from the center conductor to ground and a low throughput resistance A failing impulse suppressor may be tripping prematurely The easiest way to test the Mo...

Страница 36: ...cable type may cause low GPS quality due to cable attenuation Long GPS antenna lengths may require an inline amplifier Refer to Section 2 2 for GPS cable recommendations and Section 2 4 for inline am...

Страница 37: ...and ACD Alarm Timeout AT1 1 Minute Command AT1 Alarm Timeout AT2 2 5 Hours Command AT2 Alarm Timeout AT3 30 Days Command AT3 CTCSS Tone 67 00 Hz Option 14 Command CTC Event Output ON Command EO Signat...

Страница 38: ...MODEL 8197 SECTION 3 OPERATION 3 0 INTRODUCTION 3 1 FRONT PANEL FUNCTIONS 3 2 REAR PANEL FUNCTIONS...

Страница 39: ...s for one minute The lamp turns off when fewer than four qualified satellites are tracked and Alarm Timeout 1 AT1 expires The lamp turns back on when at least four satellites are reacquired and qualif...

Страница 40: ...out 2 The period of time AT2 allotted for operation without tracking a minimum of four qualified satellites has expired Factory default period is 2 5 hours An AT2 Alarm is also asserted during start u...

Страница 41: ...______________________________________________Section 3 Operation 8197 Instruction Manual Page 3 3 FIGURE 3 1 MODEL 8197 FRONT PANEL...

Страница 42: ...ogram is below 3000 Replace Battery Internal battery pack Option 02 only has failed daily test needs replacement Refer to Section 6 Service Information for battery replacement instructions Antenna Pro...

Страница 43: ...parity and xon xoff flow control FIGURE 3 2 RS 232 COM PIN NUMBERING PIN SIGNAL I O DESCRIPTION 2 RXD O Receive Data 3 TXD I Transmit Data 5 GND Signal Common 6 DSR O Data Set Ready 7 RTS Request to...

Страница 44: ...el 8197 is shown in Figure 3 3 The following paragraphs describe each of the rear panel functions 3 2 1 GPS Antenna This type N connector is the antenna input to the GPS receiver The Model 8225 GPS An...

Страница 45: ...______________________________________________Section 3 Operation 8197 Instruction Manual Page 3 7 FIGURE 3 3 MODEL 8197 REAR PANEL...

Страница 46: ...3 Built in Distribution Amplifier Option 06 12 8 MHz Outputs Option 07 5 MHz Outputs Option 08 1 MHz Outputs 3 2 3 1544 kHz and 2048 kHz Timing Outputs Each of these RJ 11 receptacles provide an RS 48...

Страница 47: ...output 3 2 3 1 RS 485 Outputs RS 485 is a balanced differential transmission requiring twisted pair cabling Refer to Figure 3 5 for a schematic representation of the RS 485 output driver Relative to R...

Страница 48: ...m relay is energized causing continuity between Pin 4 and Pin 6 When a Major Alarm is asserted the relay is deactivated causing continuity between Pin 4 and Pin 5 The relay remains in alarm condition...

Страница 49: ...O the outputs can be offset from 0 to 1 second in 0 1 microsecond steps Refer to Section 4 for additional information on the 1PO Command The 18 kHz output is not made leading edge synchronized 3 2 4 1...

Страница 50: ...asserted Pin 4 switches to high impedance open circuit Refer to Section 3 1 2 for a complete description of Major Alarms 3 2 5 Set Up Switches The Set Up Switches configure the RS 485 address baud rat...

Страница 51: ...1 13 1 0 1 1 0 29 1 0 1 1 1 14 0 1 1 1 0 30 0 1 1 1 1 15 1 1 1 1 0 31 1 1 1 1 1 1 SWITCH ON 0 SWITCH OFF TABLE 3 4 ADDRESS SELECTION 3 2 5 2 RS 485 Baud Rate DIP switch 6 is reserved for future imple...

Страница 52: ...5 A Terminal 4 Receive RS 485 B Terminal 5 Ground Cable Shield 6 Ground Cable Shield TABLE 3 5 RS 485 COM PIN ASSIGNMENTS The RS 485 address and termination are selected by the rear panel DIP switch a...

Страница 53: ...NNECTION 3 2 7 Data Sync Timing Outputs This connector provides RS 485 clock signals of 17 2 3 Hz 33 1 3 Hz 18 kHz 64 kHz and Major Alarm relay contacts The connector is a 15 Pin series D female numbe...

Страница 54: ...17 2 3 Hz signals with the selected CTCSS outputs 1 and 2 respectively Option 06 12 8 MHz outputs changes the 64 kHz output to 50 kHz Refer to Section 5 Options and Accessories for additional informat...

Страница 55: ...he B Terminal for a Binary 1 The A Terminal is positive to the B Terminal for a Binary 0 B A RS 485 OUTPUT FIGURE 3 12 DATA SYNC DRIVERS 3 2 7 2 Major Alarm Contacts Major Alarm relay contacts are fou...

Страница 56: ...the Major Alarm relay is energized The energized relay causes continuity between common contact Pin 2 and the normally open contact Pin 3 A Major Alarm or power failure de activates the relay causing...

Страница 57: ...or allows connection of a backup power source The backup source powers the oscillator and GPS Receiver whenever AC power is interrupted Backup power speeds recovery time when AC power is restored by e...

Страница 58: ...power G G FIGURE 3 14 DC POWER CONNECTOR 3 2 10 AC Power The standard Model 8197 receives primary power from a 90 to 264 VAC 50 60 Hz power source A detachable line cord is furnished in the ancillary...

Страница 59: ...ations to ensure optimum lightning protection A separate earth ground is also recommended in installations where excessive noise on the power line degrades the Model 8197 receiver performance 3 2 13 B...

Страница 60: ...MODEL 8197 SECTION 4 SOFTWARE COMMANDS 4 0 INTRODUCTION 4 1 RS 232 COMMAND STRUCTURE 4 2 RS 232 COMMAND DESCRIPTIONS 4 3 RS 485 COMMAND STRUCTURE 4 4 RS 485 COMMAND DESCRIPTIONS...

Страница 61: ...ds contain a hierarchy of Read Set and Test modes Figure 4 1 illustrates the Model 8197 command structure Read Mode is the base level and when in Read Mode the user may access standard commands From R...

Страница 62: ...2 14 SC Signature Control SET 4 2 15 SM Set Mode 4 2 16 STAT Status Information READ 4 2 17 TIME Time READ SET 4 2 18 TM Test Mode 4 2 19 TZO Time Zone READ SET 4 2 20 U2G UTC to GPS Time Offset READ...

Страница 63: ...000 000 to 000999 999 microseconds To enter a cable delay place the clock in Set Mode operation issue the ACD command as follows Type ACD XXXXXX XXX ent Where XXXXXX XXX 000000 000 to 000999 999 micro...

Страница 64: ...le to reacquire qualified satellites within the assigned time out periods the expired time out alarm is asserted An AT1 alarm is classified as a Minor alarm AT2 and AT3 are Major alarms To read the cu...

Страница 65: ...not reset by this command The indicator alarm lamps remain on until the fault condition is corrected When a CA command is issued the unit responds with a change in status report This report time stamp...

Страница 66: ...ment will temporarily clear the alarm The alarm may reassert upon performing the daily battery test at midnight When a CA BAT command is issued the unit responds with a change in status report This re...

Страница 67: ...t up switches All other parameters are configured using RS 232 or RS 485 command sets To retrieve configuration information issue the CONF command as shown below TYPE CONF ent Default Response TIME ZO...

Страница 68: ...atus and active alarms To retrieve the alarm log issue the DAL command as shown below Type DAL ent Example Response TIME 12 57 53 DATE 2000 03 24 STATUS CHANGE TEMP 43 0 COOLING FAN OFF ALARM RELAYS M...

Страница 69: ...y 04 April DD Day of the month 01 to 31 Hyphen To set the date place the clock in Set Mode then issue the DATE command as follows Type DATE YYYY MM DD ent Where YYYY MM DD As defined above The clock r...

Страница 70: ...ous midnight value To display the last frequency measurement issue the DFM command as shown below Type DFM ent Example Response DFM DRIFT 0003 ns 3 5E 14 2000 03 24 Adding the ALL parameter to the DFM...

Страница 71: ...e GPS receiver gates RAM contents etc 5 Start up occurs at power on 6 First satellite found occurs when the 8197 detects a satellite for the first time since power on This entry does not happen after...

Страница 72: ...PHASE ERROR 001 22 nSEC TIME 14 31 31 DATE 2001 03 21 PHASE ADJUSTMENT AVG LEN 04B0 TOTAL FFFFF230 DAC A422 64 TEMPERATURE 41 5 PHASE ERROR 001 44 nSEC TIME 14 51 31 DATE 2001 03 21 PHASE ADJUSTMENT A...

Страница 73: ...meter P causes the histogram to display one page at a time In paged mode the user may quit or continue the display after each page is displayed The tracking histogram is useful in verifying receiver a...

Страница 74: ...03 24 TRACKING HISTOGRAM 0 00000 1 00000 2 00000 3 00000 4 00000 5 00000 6 00055 7 02478 8 01067 Q 03600 TIME 12 00 00 DATE 2000 03 24 TRACKING HISTOGRAM 0 00000 1 00000 2 00000 3 00000 4 00000 5 000...

Страница 75: ...e generated The Event Output command EO can enable or disable the automatic output of these entries The factory default is enabled To view the Event Output configuration issue the EO command as follow...

Страница 76: ...31 08 052 AA 04 03 08 048 AA 05 15 08 051 A2 06 18 08 051 AA 07 13 08 049 AA 08 19 08 051 AA The overall tracking and mode status is presented in the format shown below TRACKING N SATELLITES GPS STATE...

Страница 77: ...Time Avail 02 AGC Set 07 Ephemeris Acquire 03 Freq Acquire 08 Avail for Position 04 Bit Sync Detect STREN Signal strength value relative to SNR 00 55 The higher the number the greater the received si...

Страница 78: ...YTHEPERFORMANCELOG DFM DAILYFREQUENCYMEASUREMENT DH P DISPLAY THE HISTOGRAM LOG STAT DISPLAY STATUS INFORMATION DS GSS GPS SIGNAL STATUS DSS SS DATE YYYY MM DD CURRENT DATE D TIME HH MM SS CURRENT TIM...

Страница 79: ...ew position using this command has no effect Also after initial installation the receiver will keep its current position in Non Volatile RAM so that on subsequent power cycles the unit will reach firs...

Страница 80: ...r a Major Alarm is asserted The Model 8197 is factory shipped with Signature Control off To read the Signature Control configuration issue the SC command as follows Type SC ent Response SIGNATURE CONT...

Страница 81: ...rational parameters are entered The unit times out of Set Mode and returns to Read Mode operation if no commands are issued for 15 minutes To read the Set Mode status ON or OFF issue the SM command as...

Страница 82: ...PS tracking status position battery status temperature cooling fan operation and alarm status To retrieve operational status information issue the STAT command as follows Type STAT ent OR DS ent Examp...

Страница 83: ...tes 00 59 SS Seconds 00 60 To set the time place the clock in Set Mode and issue the TIME command as follows Type TIME HH MM SS ent Where HH MM SS As defined above The clock responds with a time messa...

Страница 84: ...o commands are issued for 15 minutes Major and Minor alarms are asserted whenever the clock is in Test Mode To read the Test Mode status ON or OFF issue the TM command as shown below Type TM ent Respo...

Страница 85: ...American Time Zone offset values for periods of Standard time and Daylight Saving time TIME ZONE STANDARD TIME October April DAYLIGHT SAVING TIME April October Atlantic 4 3 Eastern 5 4 Central 6 5 Mou...

Страница 86: ...he U2G command displays the offset in seconds between UTC and GPS times This offset is due to leap seconds that have occurred since the GPS system was launched To view the UTC to GPS offset issue the...

Страница 87: ...and date the unit was turned on and GPS receiver type To retrieve version information issue the VER command as shown below Type VER ent Sample Response SPECTRACOM CORPORATION GPS DISCIPLINED OSCILLATO...

Страница 88: ...t as they are leading edge synchronized to the 1PPS output To read the 1PPS offset value issue the 1PO command as shown below Type 1PO ent Default Response 1PPS Offset 000000 000 Microseconds To selec...

Страница 89: ...Message 1 to 502 Bytes 4 character commands plus parameters Check Word 2 Bytes Running sum including all bytes after the start word through the last message byte Stop Word 2 Bytes Unique characters cr...

Страница 90: ...GPS Signal Strength 4 4 6 loc Full location 4 4 7 rrsn Signal Selection 4 4 8 sts Short Status Display 4 4 9 tad Time and Date 4 4 10 tzo Time Zone 4 4 11 who Vendor Version 4 4 12 1po One PPS Offset...

Страница 91: ...s This is a short command designed to let the controller know if there are any alarms present rast rastC where C y or n indicating if there are alarm conditions present 4 4 4 ALARM TIMEOUTS This comma...

Страница 92: ...7 Ephemeris Acquire 03 Freq Acquire 08 Avail for Position 04 Bit Sync Detect SSS Signal strength value relative to SNR 00 55 The higher the number the greater the received signal The minimum acceptabl...

Страница 93: ...4 8 SIGNAL SELECTION This command reads the MUX timing outputs available on the rear panel rrsn rrsn where 1 for 1 544 MHz outputs 2 for 2 048 MHz outputs 3 for a 1 544 MHz and a 2 048 MHz output 0 f...

Страница 94: ...is UTC time NOTE The GPS time system has no indication for Daylight Savings Time if the user wishes to have the time reflect DST they will need to change the time zone offset twice per year wtzoSHHMM...

Страница 95: ...0 INTRODUCTION 5 1 OPTION 02 INTERNAL BATTERY BACKUP 5 2 OPTION 03 BUILT IN DISTRIBUTION AMPLIFIER 5 3 OPTION 06 12 8 MHZ OUTPUTS 5 4 OPTION 07 5 MHZ OUTPUTS 5 5 OPTION 08 1 MHZ OUTPUTS 5 6 OPTION 11...

Страница 96: ...bution Accessories Model 8140T Line Taps Model 8140TA Line Extender Amplifier Model 8140VT VersaTapTM Frequency Synthesizer Model 8140MT MultiTap 12 8 MHz Outputs Option 06 5 MHz Outputs Option 07 1 M...

Страница 97: ...inutes The battery test is transparent to unit operation If the battery falls below the minimum voltage set point the test is discontinued and the Replace Battery alarm is asserted Refer to Section 6...

Страница 98: ...Tap at each remote station receives DC power and the 10 MHz from the main coaxial trunk line cable The signal is buffered then divided to the frequency needed at that station After filtering the sign...

Страница 99: ...ohms SN74S140 driver Output B A TTL output at the specified frequency with a source impedance of 50 ohms SN75S140 driver If the internal jumper W6 is moved to location W5 Output B is HIGH when the Ve...

Страница 100: ...in a group may be individually selected Table of output divisors Group A B C D 1 1 5 5 2 2 10 10 10 20 50 100 50 100 250 500 250 500 1250 2500 For a 10 MHz input the available outputs in MHz are Grou...

Страница 101: ...an 25 Line Tap loads are required you may Add a Model 8140 Frequency Distribution Amplifier The Model 8140 contains an internal power supply and will feed an additional 25 Line Tap loads A Line Tap is...

Страница 102: ...connector No branching or Y configurations may be used as this causes impedance mismatch on the line Anything other than a 50 ohm line impedance may cause reflections which can cancel the output wavef...

Страница 103: ...e Model 8140 to drive an additional 25 more line tap loads 5 0 MHz 10 0 MHz 8140VT 1 544 MHz 8140VT 2 048 MHz 8140MT TTL DC Isolated 50 ohm terminator P N 004490 Terminate the end of each distribution...

Страница 104: ...l not be used QUANTITY DESCRIPTION 1 Right hand slide assembly 1 Left hand slide assembly 2 Filler plates not used 2 Adjustable rear support bracket 1 Hardware Pack containing nut plates small rear su...

Страница 105: ...ous Tone Coded Squelch System CTCSS outputs The available CTCSS frequencies range from 67 0 to 254 Hz The rear panel Data Sync connector provides the CTCSS frequencies in RS 485 levels These outputs a...

Страница 106: ...IPTION 1 64 kHz RS 485 B Terminal 2 64 kHz RS 485 A Terminal 3 18 kHz RS 485 B Terminal 4 18 kHz RS 485 A Terminal 5 CTCSS 2 RS 485 B Terminal 6 CTCSS 2 RS 485 A Terminal 7 CTCSS 1 RS 485 B Terminal 8...

Страница 107: ...iguring the CTCSS outputs CTCSS FREQUENCIES Hz 67 00 69 33 72 00 74 33 77 00 79 66 82 66 85 33 88 66 91 66 94 66 97 33 100 00 103 66 107 33 111 00 114 66 118 66 123 00 127 33 131 66 136 66 141 33 146...

Страница 108: ...is positive to the B Terminal for a Binary 0 B A RS 485 OUTPUT FIGURE 5 5 DATA SYNC DRIVERS 5 7 4 CTCSS Configuration The CTCSS outputs are configured using the front panel RS 232 COM port The CTCSS...

Страница 109: ...ne frequency Refer to Table 5 5 for code listings XZ 67 00Hz WZ 69 33Hz XA 72 00Hz WA 74 33Hz XB 77 00Hz WB 79 66Hz YZ 82 66Hz YA 85 33Hz YB 88 66Hz ZZ 91 66Hz ZA 94 66Hz ZB 97 33Hz 1Z 100 00Hz 1A 103...

Страница 110: ...CTC command as shown below Type CTC TABLE ent Response CTCSS TABLE XZ 67 00Hz WZ 69 33Hz XA 72 00Hz WA 74 33Hz XB 77 00Hz WB 79 66Hz YZ 82 66Hz YA 85 33Hz YB 88 66Hz ZZ 91 66Hz ZA 94 66Hz ZB 97 33Hz...

Страница 111: ...MODEL 8197 SECTION 6 SERVICE INFORMATION 6 0 INTRODUCTION 6 1 BATTERY REPLACEMENT...

Страница 112: ...ed from Spectracom Specify Part Number B00004 Batteries can also be obtained locally Power Sonic part number PS 1270 and Panasonic LC R127R2P are acceptable replacement Batteries can also be purchased...

Страница 113: ...erterminal Procomm Plus etc will be needed to communicate with the RS 232 Comm port Configure the terminal for ANSI emulation 9600 baud and a character structure of 1 start 8 data 1 stop and no parity...

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