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XStudio 3326

8.8 Generic Log File Specification

The Generic Log File Specification documents the file naming convention and record structure for logs

created for use with XStudio.

This specification was originally published by Computer Concepts Corporation,

Lenexa, KS in 1989 and updated to version 1.5 in October 1991. The

specification was released to all interested parties, including traffic system

vendors and music scheduling system vendors.

This document (the one you are reading) is referred to as:

dcsTools Generic Log File Specification Version 1.6 (Updated 6/28/2010)

It updates and corrects errors in version 1.5 of the specification published by

Computer Concepts Corporation.

Log File Structure

The Generic Log File is made up of 69-byte records terminated with a Carriage Return (byte 68) and

Line Feed (byte 69).

The first record in the file is an informational record (ID Record) not displayed in XStudio.

All other records include a time field of 4 characters representing military time in hours and minutes, on

which the file is sorted. In addition, Commercial Records contain a seconds value field. The time field,

including the seconds value field where applicable, must be a unique value for each record, in the

range of 00:00:00 to 23:59:59. The log has a maximum of 86,400 records, based on unique time

values with one-second resolution.

The original Computer Concepts specification document indicated that the

maximum number of records for a log file is 1441. While this number is correct

when considering the number of minutes in a day (1440) plus one ID Record, in

reality the actual maximum number of records is 86,400 when you consider

Commercial Records that contain a seconds value.

Each log file represents one (1) day of programming, 24 hours in length, beginning at midnight and

finishing at 11:59:59 PM.

It is not required that a log file contain content for all hours of the day (i.e. records with time fields

starting at midnight and ending at 11:59 PM), but the log must not contain content for more than one

day. As an example, if the station for which the log is prepared operates between 5 AM and 8 PM only,

it is perfectly acceptable that the log file contains content for those hours only.

A typical log, viewed in a standard text editor, might look similar to the example fragment:

I WXST-FM

D0000LR00300 Load Required Brk

C0000:01T004DIET COKE/Q:Diet Coke! 00059CM

C0000:02T010VERNE & BUBBA'S DONUT 00049CM

C0000:03T110DoubleTree 00058CM

D0020LR00400 Load Required Brk

C0020:01T118Get Well Games 00059CM

C0020:02T120DENTYNE/reg or sugarfree 00029CM

Additional information regarding what the host system expects to see in the finished generic log is

contained in the topic Generic Log Construction Guidelines.

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Broadcast Tools ADMS 44.22 Manual de Serviço Página 326