Manuale d’uso / di manutenzione del prodotto LBI-39128 del fabbricante Ericsson
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LBI-39128 ericssonz ericssonz Installation & Operation EDACS Power Monitor Unit.
LBI-39128 CONTENTS Copyright March 1995, Ericsson Inc. 2 TABLE OF CONTENTS Page INTRODUCTION ....................................................................................................................................... 6 DESCRIPTION ....
CONTENTS LBI-39128 3 TABLE OF CONTENTS (Cont.) Page OPERATION .............................................................................................................................................. 22 STARTUP ...................................
LBI-39128 FIGURES AND TABLES 4 LIST OF FIGURES AND TABLES Page Figure 1 - Location of PMU Components.................................................................................................... 6 Figure 2 - Card Layout for PDP Upgraded to VAX .
SPECIFICATIONS LBI-39128 5 SPECIFICATIONS PMU: Mechanical: Width ............................................................ 19 in. (482.6 mm) Height ............................................................ 3.5 in. (88.9 mm) Depth ...............
6 INTRODUCTION This manual describes the installation and operatio n of the Deci bel Produ cts DB8860-base d PMU (Power Mon itor Unit) for non-sim ulcast EDA CS (Enhanced Digital Access Comm unication s Sy stem) repeater sites that use a VA X computer for the Site Controller.
APPLICATION NOTES LBI-3912 8 7 APPLICATION NOTES VAX SITE CONTROLLER COMPUTER Make sure that the Site Controller computer, at the location where this PMU is to be installed, is a VA X model or a PDP model that has been upgraded to a VAX m odel.
LBI-39128 INSTALLATION 8 INSTALLATION SITE CONTROLLER HARDWARE Verify that the Site Controller co m puter is a VAX model, or a PDP model that has been upgraded to a VAX model (see the VAX Site Controller heading in the Applications Notes section).
INSTALLATION LBI-39128 9 The location of the Application Software and Personality PROMs on the PROM card is shown in Figure 6. When replacin g PROMs, be sure to get each n ew PROM in th e correct location , and w ith the notched end as sh own .
LBI-39128 INSTALLATION 10 Parts Required Before you start this procedure, b e sure you have all the parts on hand. The parts for this procedure are sh own in Table 2.
INSTALLATION LBI-39128 11 Sensor interf ace modu le in the EDAC S Repeater cabinet con taining the transm itter for channel #11 or #13). If the tw o cabinets are next to each oth er in the sam e row, us e a 5-ft 19D903880P120 cable. If the tw o cabinets are across from each other in different rows , use a 15-ft 19D903880P121 cable.
LBI-39128 INSTALLATION 12 J1 J2 J3 J4 J5 J6 J7 J8 J9 188D6466P2 Cables (5 Each) PORT 7 PORT 5 188D6466P1 Cable PORT 8 PORT 6 Daisy Chain Cable to Power Sensors for Transmitter Channels 1 - 12 Daisy Ch.
INSTALLATION LBI-39128 13 Power Sensor in terface module conn ector marked “J1”, label the cable “ J 1” and disconnect it from the Power Sensor interface module.
LBI-39128 INSTALLATION 14 Procedure The following steps involve equipment in the Site Controller cabinet, except as noted: 1. Mark the cables and w ires going to the old PMU as follows: • Mark “Antennas 1 -4 ” on the cable go ing to the DB- 15 conn ector on th e back of old PMU m arked “Antennas 1-4”.
INSTALLATION LBI-39128 15 on the back of the PMU (this cable will be re-connected later in the installation). 2. Sw itch the On/Off switch on the b ack of the PMU to the “On” position. 3. Verify t hat th e “PWR” indi cator on th e front panel of the PMU stays on continuously.
LBI-39128 INSTALLATION 16 4. Type 8860 and press the Ent er key . The Operation Select Menu should then appear on the term inal as show n in Fig ure 15 (revi sion # an d date m ay be different). If the PMU does not resp ond to this entry, the pas sword m ay h ave been re-conf igured f rom its factory default valu e.
INSTALLATION LBI-39128 17 Time/Date/Password The following steps to set the time, date, and password are optional and ha ve no aff ect on the performan ce of the PMU: 11. With the Setup Selection Menu sho w n on the terminal, type 2 (f or item #2 - S ite Data #1) an d press the Enter key.
LBI-39128 INSTALLATION 18 19. At the “Ent er New Data:” prom pt, type up to 4 characters for the passw ord and press the Enter key . Check t he passw ord show n on the Site Dat a #1 screen to be abso lutely sure it is what you expected and want. If not, ret urn to st ep #8 and redo the pas sw ord.
INSTALLATION LBI-39128 19 ANALOG INPUT CHANNEL 1 1. CHANNEL TYPE (0-13) = 3 2. DESCRIPTION = TX01 3. UNIT ID = AI01 4. MEASUREMENT UNITS = Watts 5. ALARM DELAY (1/4 sec) = 3 6. LOWER ALARM LIMIT = 0.0 7. UPPER ALARM LIMIT = 125.0 8. ALARM REPORT TYPES (1,2,3,4) = 9.
LBI-39128 INSTALLATION 20 power (P in watts), and com pare with the actual pow er measu rement on the power m eter. Because the table does not contain all v alues of V and P, y o u m ay need to interpolate to get the values you need.
INSTALLATION LBI-39128 21 Table 6 - Power Sensor Voltage-to-Power Conversion Table VP VP VP VP VP VP VP VP 0.00 0.0 0.62 25.5 1.25 80.6 1.87 164.4 2.50 276.7 3.13 417.2 3.76 585.9 4.38 782.7 0.01 0.6 0.64 26.8 1.27 82.8 1.89 167.5 2.52 280.6 3.15 422.
LBI-39128 OPERATION 22 OPERATION The PMU performs the following operations: • Monitors the detecto r output voltages from the transmitter and antenna power sensors under the direction of the Site Controller computer. • Converts the detector o u tput voltages to p ow er and SWR levels.
OPERATION LBI-39128 23 transmitters, make all the required power and SWR calculations, and com pare all measurem ents and calculations to the applicable high and low alarm limits. Only alarm conditions that are m easured 750 milliseconds or m o re af ter the associated transmitter is keyed are used to send an alarm to the Site Controller computer.
LBI-39128 OPERATION 24 Alarm Reporting The PMU reports alarms to the Site Controller computer in the status m e ssage replies to the on-channel messages.
OPERATION LBI-39128 25 When n o transm itter alarms are received in a status messag e from the PMU, the Site Controller computer takes the following action: • Resumes the practice of using transmitter alarm s from the PMU to take transmitter channels out of use for system calls.
LBI-39128 OPERATION 26 Table 7 - PMU Option Parameters PARAMETER DESCRIPTION SITE CONTROLLER COMPUTER PERSONALITY PROMS SYSTEM MANAGER SITE DATABASE PMU ACTIVE CONFIGURATION Bit map parameter set that enables the PMU option on a per-channel basis (must also be enabled on a site-wide basis).
OPERATION LBI-39128 27 Transmitter Lower Alarm Limit The value of this parameter is used by the PMU as the lower alarm limit for each tran smitter’ s output pow er.
LBI-39128 OPERATION 28 SWR Upper Limit This parameter is used by the PMU as the upper alarm limit f or each antenna’ s SWR. Its purpose is to detect w hen the antenna or coax to the antenna is damaged. T he recomm ended value for this limit is 2.0, which is equivalent to about 11% reflected power.
OPERATION LBI-39128 29 2. At the “Ent er Ch annel Nu mber” prompt, t ype 25 f o r antenn a #1 or 27 for A ntenn a #2 and press the Ent er key . The Analog Input Chan nel screen for th at antenna should then appear on the terminal. 3. T ype 6 (for i tem #6 - Low er Alarm Limit) an d press the Enter key.
LBI-39128 MAINTENANCE 30 Use the f ollowin g procedure to disconn ect the term inal when you are finished: 1. With the Setup Selection Menu sho w n on the terminal, Type 1 (for it em #1 - Return To Operation Select Menu) an d press the Enter key . T he Operation Select Menu should then be shown on the terminal.
MAINTENANCE LBI-39128 31 REPORT SELECTION MENU 1. RETURN TO OPERATION SELECT MENU 2. ALARM REPORT 3. ALARM HISTORY 4. CURRENT STATUS 5. CHANNEL MONITOR 6.
LBI-39128 MAINTENANCE 32 1. With the Ope ratio n Selec t Menu ( main menu) sho wn on the s creen, type 2 (for i tem #2 - Reports ) and press t he Enter key . The Report Selection Menu sho uld then appear on the terminal as shown in Figure 23. 2. T y pe 5 (for item #5 - Chan nel Moni tor) and press the Enter key.
MAINTENANCE LBI-39128 33 want to return the PMU’s parameters to the factory default values, use the Software Initialization process describ ed in the Installation section (its much easier).
LBI-39128 MAINTENANCE 34 transmitter channels. Repeat steps 2 through 6 for each transmitter channel until all are re-configured. TROUBLESHOOTING After y o u think y ou have fixed a transmitter alarm problem, switch the transm itter o ff (12V p o w er supp ly ), then back on.
MAINTENANCE LBI-39128 35 Table 10 - Troubleshooting Symptoms (Continued) SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION Constant transmitter alarm for one transmitter, but transm itter’s po w er is OK. Lower Alarm L imit is set too high or Upper Alarm Limit is set too low.
LBI-39128 GLOSSARY Ericsson Inc. Private Radio Systems Mountain View Road Lynchburg, Virginia 24502 1-800-528-7711 (Outside USA, 804-528-7711) Printed in U.
INTERCONNECTION DIAGRAM LBI-39128 PMU Interconnection Diagram EDACS Repeater Cabinet 37 Interface Panel EDACS 19C852204G1 "POWER SENSOR" 1 26 Xmtr #1 Xmtr #3 3 28 J14 / J15 25 PR (F) Xmtr #2.
LBI-39128 INTERCONNECTION DIAGRAM PMU Interconnection Diagram EDACS Site Controller Cabinet 38 19D149302P9 Controller 350A1380P1 Power Monitor Unit EDACS Interface Panel 19C852632G1 "POWER SENSOR.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Ericsson LBI-39128 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Ericsson LBI-39128 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Ericsson LBI-39128 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Ericsson LBI-39128 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Ericsson LBI-39128, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Ericsson LBI-39128.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Ericsson LBI-39128. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Ericsson LBI-39128 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
