User's Manual

2 68P80801E35-A 9/1/2001
Troubleshooting EBTS System Manual - Vol 2
Troubleshooting Preliminaries
Troubleshooting Preliminaries
Recommended Test Equipment
Table 1 lists recommended test equipment necessary for performing Base Radio
troubleshooting/verification procedures.
Troubleshooting Procedures
Many of the troubleshooting and station operation procedures require
Man-Machine Interface (MMI) commands. These commands are used to
communicate station level commands to the Base Radio via the RS-232
communications port located on the front of the BRC.
Routine Checkout
Procedure One is a quick, non-intrusive test performed during a routine site visit.
Use this procedure to verify proper station operation without taking the station
out of service. Figure 1 shows the Procedure One Troubleshooting Flowchart.
Table 1 Recommended Test Equipment
Test Equipment Model Number Use
Communications Analyzer R2660 w/iDEN option Used for checking receive and
transmit operation (iDEN
signaling capability) and station
alignment
Dummy Load (50 Ω, 150 W) none Used to terminate output
Service Computer IBM or clone, 80286 or
better
Local service terminal
Portable Rubidium
Frequency Standard
Ball Efratom Frequency standard for R2660,
netting TFR
Power Meter none Used to measure reflected and
forward power
RF Attenuator, 250 W, 10 dB Motorola 0180301E72 Protection for R2660
Software:
Communication
File Compression
RF Power Mete
Low Power Sensor Head
Procomm Plus
PKZip
HP438A
HP8481D
Local service computer
Compress/Decompress data
(Single Channel BR only)
Used for calibration of the R2660
signal (QUAD BR only)
Used in conjunction with Power
Meter (QUAD BR only)