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6-56
3. External Microphone Separation Check
5. External Microphone Noise Level Check
Connection:
Connect the following terminals of the 26PIN multi connector using
a resistor.
1) Connect a 22 k
Connect the following terminals of the 26PIN multi connector using
a resistor.
1) Connect a 22 k
Ω
resistor between Pin
8 (S STATUS) and Pin
!§ (GND).
(Turn OFF SW2 of the I/O board-1 tool.)
(Turn OFF SW2 of the I/O board-1 tool.)
2) Connect a 470 k
Ω
resistor between Pin
6 (S STATUS2) and Pin
!§ (GND).
(Turn ON SW3 of the I/O board-1 tool.)
(Turn ON SW3 of the I/O board-1 tool.)
Checking Method
1) Input a 1kHz, –44 dBs signal to Pin
1) Input a 1kHz, –44 dBs signal to Pin
!£ (right) of the 26PIN multi
connector.
2) Check that the signal level of the left channel of the video output
(Note 1) satisfies the specified value.
Note 1:
Impose a 47 k
Ω
resistance to the left of the vide audio/
headphone terminal, and turn the power ON from OFF.
4. External Microphone Distortion Rate Check
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
Camera mode recording
1 kHz, –44 dBs signal
Pin
Pin
!£ (right) of the 26PIN multi
connector
(Connect Pin
(Connect Pin
!
∞
(left) to Pin
!¶ (GND)
with a jumper wire.)
Audio video/headphone terminal left
(47 k
(47 k
Ω
load)
Audio level meter
Below –40 dBs
(IHF-A filter ON, 20 kHz LPF ON)
(IHF-A filter ON, 20 kHz LPF ON)
Connection:
Connect the following terminals of the 26PIN multi connector using
a resistor.
1) Connect a 22 k
Connect the following terminals of the 26PIN multi connector using
a resistor.
1) Connect a 22 k
Ω
resistor between Pin
8 (S STATUS) and Pin
!§ (GND).
(Turn OFF SW2 of the I/O board-1 tool.)
(Turn OFF SW2 of the I/O board-1 tool.)
2) Connect a 470 k
Ω
resistor between Pin
6 (S STATUS2) and Pin
!§ (GND).
(Turn ON SW3 of the I/O board-1 tool.)
(Turn ON SW3 of the I/O board-1 tool.)
Checking Method
1) Input a 1kHz, –44 dBs signal to Pins
1) Input a 1kHz, –44 dBs signal to Pins
!
∞
(left) and
!£ (right) of
the 26PIN multi connector.
2) Check that the distortion rate of the audio output (Note 1) satisfies
the specified value.
Note 1:
Impose a 47 k
Ω
resistance to the left Audio video/
headphone terminal, and turn the power ON from OFF.
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
Camera mode recording
Audio level meter
Below 0.4% (20 kHz LPF ON)
Audio video/headphone terminal left
(47 k
(47 k
Ω
load)
1 kHz, –44 dBS signal
Pin
Pin
!
∞
(left) and Pin
!£ (right) of 26PIN
multi connector
Mode
Signal
Measurement Point
Measuring Instrument
Specified Value
Camera mode recording
No signal:Connect pin
!£ (right) and
Pin
!¶ (GND), and Pin !
∞
(left) and
Pin
!¶ (GND) of the 26PIN multi
connector with jumper wires
respectively.
respectively.
Audio video/headphone terminal left
(47k
(47k
Ω
load)
Audio level meter
Below –45 dBs
(IHF-A filter ON, 20 kHz LPF ON)
(IHF-A filter ON, 20 kHz LPF ON)
Connection:
Connect the following terminals of the 26PIN multi connector using
a resistor.
1) Connect a 22 k
Connect the following terminals of the 26PIN multi connector using
a resistor.
1) Connect a 22 k
Ω
resistor between Pin
8 (S STATUS) and Pin
!§ (GND).
(Turn OFF SW2 of the I/O board-1 tool.)
(Turn OFF SW2 of the I/O board-1 tool.)
2) Connect a 470 k
Ω
resistor between Pin
6 (S STATUS2) and Pin
!§ (GND).
(Turn ON SW3 of the I/O board-1 tool.)
(Turn ON SW3 of the I/O board-1 tool.)
Checking Method
1) Check that the noise level of the audio output (Note 1) satisfies
1) Check that the noise level of the audio output (Note 1) satisfies
the specified value.
Note 1:
Impose a 47 kW resistance to the left video audio/
headphone terminal, and turn the power ON from OFF.
headphone terminal, and turn the power ON from OFF.
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