GRAS 45CC Series User manual
Instruction Manual
GRAS 45CC Headphone Test Fixture
45CC-1 to -4, -9, -10 and -14 to -19
LI0194 – 28 June 2022
Revision History
Any feedback or questions about this document are welcome at gras@grasacoustics.com.
Revision Date Description
1 23 June 2016 Preliminary release
2 16 September 2016 First publication
3 2 March 2018
added. Microphone assembly part numbers updated (p. 7-14)
4 3 March 2022
5 24 June 2022
capabilities
www.GRASacoustics.com
not liable or responsible for any errors or inaccuracies that may appear in this document.
Trademarks
-
Instruction Manual2 | GRAS 45CC Headphone Test Fixture
Contents
Quick Assembly Guide..................................................................................................................................
Introduction ...................................................................................................................................................
Overview ..................................................................................................................................................................
................................................................................................................................................
About This Manual.................................................................................................................................................
............................................................................................................................
......................................................................................................................................................
″Microphones ...............................................................................................
″Microphones ..........................................................................................................
″Microphones .............................
″Microphones ............................................
″Microphones ............................................................................................
″Microphones .......................................................................................................
............
...
......
...
...
Optional Mouth Simulators................................................................................................................................
General Description...................................................................................................................................
..............................................................................................................................................................
................................................................................................................................................................
...............................................................................................................................................................
...........................................................................................................................................
...........................................................................................................
The Microphone Holder ......................................................................................................................................
.........................................................................................................................................
Assembly and Adjustments .....................................................................................................................
.........................................................................................................................................
.................................................................................................................
...........................................................................
........................................................................................................................
.........................................................................................................
....................................................................................................................
....................................................................................................................
Instruction Manual GRAS 45CC Headphone Test Fixture | 3
.....................................................................................................................
..............................................................
.......................................................
...................................................................................................................................................
.........................
Level Calibration with a Sound Calibrator ....................................................................................................
...........................................................................................................................
Warranty, Service and Repair...................................................................................................................
Calibration .............................................................................................................................................................
Warranty.................................................................................................................................................................
Service and Repairs ............................................................................................................................................
Instruction Manual GRAS 45CC Headphone Test Fixture | 4
Quick Assembly Guide
-
1. Slide the ear plate assembly’s Rods into the Slots on the 45CC.
2.
and
.
Ear Plate Assembly
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
4 mm Allen Key
Fig. 1.
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
Slot
Rod
Instruction Manual5 | GRAS 45CC Headphone Test Fixture
Introduction
Overview
• Adjustable head dimensions:
•
adjustments can be done in seconds.
•
properties and calibration data.
About This Manual
• Quick Assembly Guide on 5 provides very basic assembly help.
• 45CC Configurations-
Delivered Items.
• Delivered Items
used as a reference to check your delivery and help identify items mentioned in this manual.
• General Description
• Assembly and Adjustments the assembly and adjustment procedures necessary to
prepare the 45CC for use.
• Calibration
Instruction Manual GRAS 45CC Headphone Test Fixture | 6
assembled and tested from the factory.
″Microphones
″Microphones
″Microphones
″
-
phones.
″Microphones
″Microphones
″
-
-
″Microphones
″Microphones
″Microphones
″
Instruction Manual7 | GRAS 45CC Headphone Test Fixture
Microphones
Microphones
-
phones
-
-
Microphones
Microphones
-
phones
-
-
Microphones
Microphones
-
phones
-
-
Instruction Manual GRAS 45CC Headphone Test Fixture | 8
Delivered Items
to verify your delivery and to identify parts that are mentioned in this manual.
″Microphones
Included Items
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
″Microphone Assembliy*
GR0917
GR0924
GR1440B
RA0045
26AS
45EA
46BP
RA0241
40AG
GS0158
GR0010
46BD 1
2
43
5
L
B-2 B-1
02010
01020
J
GR1153
46BP-1
40AD
″
¼″Preamplifier with 3 m integrated cable:
Specifications match those of 26AC-1
″″Adapter
GR2013
GR1997
″Microphone Holder
*The parts are glued together and must not be disassembled
Instruction Manual9 | GRAS 45CC Headphone Test Fixture
″Microphones
Included Items
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
″Microphone Assembly*
GR0917
GR0924
GR1440B
RA0045
26AS
45EA
46BP
RA0241
40AG
GS0158
GR0010
46BD 1
2
43
5
L
B-2 B-1
02010
01020
J
GR1153
46BP-1
40AD
″
½″CCP Standard Preamplifier with TEDS and Microdot
Connector, Very Short
Specifications match those of 26CK
GR2013
GR1997
″Microphone Holder
*The parts are glued together and must not be disassembled
Instruction Manual GRAS 45CC Headphone Test Fixture | 1 0
″Microphones
Included Items
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
″Microphone Assembly*
GR0917
GR0924
GR1440B
RA0045
26AS
45EA
46BP
RA0241
40AG
GS0158
GR0010
46BD 1
2
43
5
L
B-2 B-1
02010
01020
J
GR1153
46BP-1
40AD
″
¼″Preamplifier with 3 m integrated cable:
Specifications match those of 26AC-1
″″Adapter
GR2013
GR1997
″Microphone Holder
*The parts are glued together and must not be disassembled
Instruction Manual1 1 | GRAS 45CC Headphone Test Fixture
″Microphones
Included Items
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
″Microphone Assembly*
GR0917
GR0924
GR1440B
RA0045
26AS
45EA
46BP
RA0241
40AG
GS0158
GR0010
46BD 1
2
43
5
L
B-2 B-1
02010
01020
J
GR1153
46BP-1
40AD
″
½″CCP Standard Preamplifier with TEDS and Microdot
Connector, Very Short
Specifications match those of 26CK
GR2013
GR1997
″Microphone Holder
*The parts are glued together and must not be disassembled
Instruction Manual GRAS 45CC Headphone Test Fixture | 1 2
″Microphones
Included Items
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
″Calibration Adapter
″Microphone Assembly*
″
″:
″Microphone Holder
*The parts are glued together and must not be disassembled
Instruction Manual1 3 | GRAS 45CC Headphone Test Fixture
″Microphones
Included Items
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
″Calibration Adapter
″Microphone Assembly*
″
¼″CCP Standard Preamplifier with TEDS, Very Short:
″Microphone Holder
*The parts are glued together and must not be disassembled
Instruction Manual GRAS 45CC Headphone Test Fixture | 1 4
Microphones
Included Items
30 40 45 55 60
3
30 40 45 55
60
53 05
5 5 0
30 40 45 55 60
3
30 40 45 55 60
53 05
5 5 0
Pinna Holder Plate
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
See
¼″Preamplifier with TEDS:
Specifications match those of 26AC-1
Right-angled adjustable adapter for ″mic/ ¼″preamp.
*The parts are glued together and must not be disassembled
Instruction Manual1 5 | GRAS 45CC Headphone Test Fixture
Included Items
30 40 45 55 60
3
30 40 45 55
60
53 05
5 5 0
30 40 45 55 60
3
30 40 45 55 60
53 05
5 5 0
Pinna Holder Plate
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
See
″
″″preamp.
*The parts are glued together and must not be disassembled
Instruction Manual GRAS 45CC Headphone Test Fixture | 1 6
Microphones
Included Items
30 40 45 55 60
3
30 40 45 55
60
53 05
5 5 0
30 40 45 55 60
3
30 40 45 55 60
53 05
5 5 0
Pinna Holder Plate
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
See
¼″Preamplifier with TEDS:
Specifications match those of 26AC-1
Right-angled adjustable adapter for ″mic/ ¼″preamp.
*The parts are glued together and must not be disassembled
Instruction Manual1 7 | GRAS 45CC Headphone Test Fixture
Included Items
30 40 45 55 60
3
30 40 45 55
60
53 05
5 5 0
30 40 45 55 60
3
30 40 45 55 60
53 05
5 5 0
Pinna Holder Plate
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
See
¼″CCP Preamplifier with TEDS:
Specifications match those of 26CB
Right-angled adjustable adapter for ″mic/ ¼″preamp.
*The parts are glued together and must not be disassembled
Instruction Manual GRAS 45CC Headphone Test Fixture | 1 8
Microphones
Included Items
30 40 45 55 60
3
30 40 45 55
60
53 05
5 5 0
30 40 45 55 60
3
30 40 45 55 60
53 05
5 5 0
Pinna Holder Plate
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
See
¼″Preamplifier with TEDS:
Specifications match those of 26AC-1
Right-angled adjustable adapter for ″mic/ ¼″preamp.
*The parts are glued together and must not be disassembled
Instruction Manual1 9 | GRAS 45CC Headphone Test Fixture
Included Items
30 40 45 55 60
3
30 40 45 55
60
53 05
5 5 0
30 40 45 55 60
3
30 40 45 55 60
53 05
5 5 0
Pinna Holder Plate
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
12mm
Back
Front
Guide
pin
0+10
-10 5 5
A
0+15
-15
0+15
-15
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
MicroDot Stik
LEMO to LEMO BNC to BNC Power Supply
See
¼″CCP Preamplifier with TEDS:
Specifications match those of 26CB
Right-angled adjustable adapter for ″mic/ ¼″preamp.
*The parts are glued together and must not be disassembled
Instruction Manual GRAS 45CC Headphone Test Fixture | 2 0
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