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Manual Calibration Procedure
Manual calibration tools are provided so expert users can calibrate the sys-
tem to their preferred methods for obtaining desired results. For example,
some technicians may prefer adjustments for lowest distortion at a certain fre-
quency; setting bias for maximum sensitivity (instead of overbiasing); or other
non-standard techniques.
The calibration procedure described here is the most commonly used tech-
nique, and is the (albeit simplified) method recommended by the Ampex Op-
eration and Service Manual.
Important:
Following this procedure will result in the same (or nearly the same) values ob-
tained by simply using the
Tip:
so the manually calibrated values are not accidentally lost if any of the con-
trols that force automatic calibration (Tape Type, Tape Speed, Emphasis EQ,
and Head Width) are inadvertently modified.
Preparation
• Reduce monitoring system volume to avoid loud sine wave Tones.
• Insert UAD Ampex ATR-102 on the DAW output bus (see note below).
• Set
• Set left and right Meter
• Set left and right Meter
• Set
• If Tape Speed is set to 3.75 IPS, set
• Disable
• Do not change the above settings throughout the procedure.
• For related information, see the
Note:
is set to Sync or Repro. Additionally, the tools may not operate in some hosts
unless audio is present on the track containing the plug-in and the transport is
running. Placing the plug-in on an aux, bus, or master output may eliminate
this host limitation.
UAD Powered Plug-Ins Manual
Manual calibration is not required to use UAD Ampex ATR-102.
When making manual calibration settings, consider disabling Auto Cal
Path Select
to
Repro
Tape
Speed,
Tape
Noise Enable
chapter.
The
Manual Calibration Tools
Auto Cal
feature.
mode (Sync mode is not supported for manual cal).
Input/Output
switches to the "OUTPUT" position.
Peak/VU
switches to the "VU" position.
Type,
Cal
Level, and
Cal Level
(excessive
Hiss
may contribute to incorrect results).
Manual Calibration Notes
are operational only when
- 167 -
Head Width
to desired values.
to +3 dB.
at the end of this
Chapter 12: Ampex ATR-102
Path Select
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