Actuator Calibration Stand Type AL0010 - Page 3
G.R.A.S. Sound & Vibration
Introduction
The Actuator Calibration Stand Type AL0010 (Fig. 1) provides a convenient platform for testing
condenser microphones. It has a xture with a grub screw for holding a 1⁄2-inch preamplier
securely in place as well as recesses and a column for safely parking electro-static actuators
and microphone protection grids when not in use (see Fig. 2).
Microphone Set-ups
Fig. 2 and Fig. 3 show respectively the set-ups for 1⁄2-inch and 1-inch microphones. Note the
adapter in Fig. 3 for mounting a 1-inch microphone on a 1⁄2-inch preamplier.
Additional Equipment
Fig. 5 shows what additional equipment can be supplied by G.R.A.S. Sound & Vibration and
Fig 6 shows a block diagram of a possible set up with all additional equipment.
The following is a list of all required additional equipment:
1) Power supply for the 1⁄2 inch preamplier,
e.g. the G.R.A.S. Power Module Type 12AK shown in Fig. 5
2) Actuator supply for electro-static actuators
e.g. the G.R.A.S. Actuator Supply Type 14AA shown in Fig. 5
Fig. 1
Actuator Calibration Stand Type
AL0010
LEMO plug of
preamplier to
Power Module (e.g.
Type 12AK)
To Actuator Supply
Type 14AA
Socket for plug on
electro-static actuator
1⁄2-inch preamplier
(e.g. Type 26AK)
Grub screw for
securing the
preamplier