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5.2. Optional Modules
Notes
Make sure that the power is switched OFF before attaching or detaching modules.
To avoid failures due to static electricity, do not touch the parts or terminals on the circuit board of both the
unit and module.
Ensure that the module is installed and secured with screws in the correct position.
Cover idle slots with the blank panels attached to the unit as shipped by the factory.
Two silver slotted screws at the top and bottom of the front panel are handles used for module detachment.
Never rotate them because they do not function as screws.
5.2.1. D-921F Microphone/Line Input Module
ACCESSORY I.T.E 78CK
GND LIFT
NORMAL
GND LIFT
NORMAL
2
1
MIC/LINE INPUT MODULE [50 / 36 / 10 / +4 dB] model D-921F
43
44
1
2
3
: E
: H
: C
43. Monaural Input Terminal [1, 2] (XLR-3-31 equivalent)
Electronically-balanced input terminal. (Pin 1:
Ground; Pin 2: Hot; Pin 3: Cold)
Use XLR-3-12C or equivalent for connection.
Input sensitivity (50/36/10/+4 dB) and
phantom power (+15 V) ON/OFF can be set by
way of the front panel setting screen.
44. Ground Lift Switch [GND LIFT/NORMAL]
Hum noise may be generated due to ground loops created when the unit
is connected to other equipment. Setting the switch to the GND LIFT
position cuts the ground loop.
2: Hot
1: Ground
3: Cold
5.2.2. D-921E Microphone/Line Input Module
45. Monaural Input Terminal [1, 2]
Electronically-balanced, removable terminal block. (H: Hot; C: Cold; E:
Ground)
Input sensitivity (50/36/10/+4 dB) and phantom power (+15 V)
ON/OFF can be set by way the front panel setting screen.
46. Ground Lift Switch [GND LIFT/NORMAL]
Hum noise may be generated due to ground loops created when the unit
is connected to other equipment. Setting the switch to the GND LIFT
position cuts the ground loop.
Note
Be sure to use the supplied removable terminal plugs (3P) for
connection.
ACCESSORY I.T.E 78CK
E
C
H
E
C
H
GND LIFT
NORMAL
GND LIFT
NORMAL
2
1
MIC/LINE INPUT MODULE [50 / 36 / 10 / +4 dB] model D-921E
45
46
GND LIFT
1
MIC/LINE INPUT MODULE
Handle
12


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