It is always advisable to create and maintain a safety backup master should any damage occur to your production master in transit or data / program corruption during the writing process.

CD-ROM Specifications

The majority of GMP capacity is dedicated to CD-ROM replication. Some of Australia's largest Corporations from software developers to magazine publishers, advertising agencies and direct marketing organisations choose GMP for all replication requirements. GMP replicates discs to any of the appropriate Philips CD-ROM Standard Book Specifications for CD-ROM (Yellow, Green, White, Blue Books).

The capacity of a standard 120mm diameter CD-ROM disc is 650 megabytes of data whilst we can offer 80 mm "Mini Rom" discs which contain 120 megabyte capacity or CD Business Cards which hold 30 megabyte (please refer specialist products section).

Preferred Formats: Replicated CD-ROM, CD-R

Replicated CD-ROM

• Any replicated CD-ROM can be used as a master format for creating a new glass master. We would request that appropriate documentation demonstrating license agreements, copyright clearance or copyright ownership where applicable.
  
• The disc should be in good condition and free from scratches or surface defects.

CDR

• Standard, high quality 74 minute or 80 minute write once CDR media is suggested. CDRW or rewritable CDR media is not recommended as suitable media as a replication master format.
  
• Disc at once / single session (in which the disc is written uninterrupted)
  
• A table of contents must be fixed.
  
• The disc should meet Orange Book Part 2, Version 2 specifications.
  
• Please also ensure that CDRs supplied are free from dust, fingerprints, dirt and scratches of any kind. Slight surface imperfections may be analyzed as excessive errors and will transfer to the finished discs as such.

CD Audio Specifications

GMP produces CD-DA (Compact Disc - Digital Audio) made in accordance to Philips comprehensive Red Book Standard which ensures uniformity and high quality of every disc produced.
The practical duration of a CD Audio disc is 78.24 minutes and it is important to note that the master supplied to GMP should be exactly as you wish your replicated discs to be. It is advisable that the client master be prepared by a professional audio mastering service that not only optimises the final sound, but ensures that the master format supplied is of a high industry preferred standard.
Mastering transfer charges may apply to formats other than a CDR or Replicated CD-DAs.

Preferred Formats: Replicated CD-DA, CDR

CDR

Please refer CD-ROM specifications above.

• A cue sheet stating disc content is advisable, especially if there are hidden or ghost tracks included as part of the program.
  
• Please also ensure that CDRs supplied are free from dust, fingerprints, dirt and scratches of any kind. Slight surface imperfections may be analyzed as excessive errors and will transfer to the finished discs as such resulting in audible glitches or drop outs.
  

PCM 1630 U-Matix 3/4" Tape.

• Timecode commencing from 00:00:00:00 at the start of the Lead-In
  
• 1 minute of recorded silence Lead-In required before the first track and I minute silence Lead-Out after the final track.
  
• An accurate cue sheet stating start points, end points and durations of each track in minutes, seconds and frames.
  
• Must be accompanied by Certified Error Check from a suitable tape analyser.

8mm Exabyte Tape

• Timecode commencing from 00:00:00:00 at the start of the Lead-In
  
• Prepared to Level 1.0, 1.01 or 2.00 Disc Description Protocol (DDP)
  
• 1 minute of recorded silence Lead-In required before the first track.
  
• A Cue Sheet and Verification Log should be supplied detailing track start and finish times.