5-4
5-3 AUDIO SYSTEM
VERIFICATION ITEM
SETUP
OPERATION
VALUE
MICROPHONE
INPUT LEVEL
~ Microphone
connector~
1 • Connect the distortion meter and
external speaker to the external
speaker jack.
• Connect the audio generator and
the AC millivoltmeter through the
JIG cable 1 to the microphone
connector, and set it to:
Frequency: 1 kHz (Sine wave)
• Set the audio volume level to 21.
• Transmitting
• Adjust the audio generator's output
level so that the distortion meter
shows 600 mV rms (±50 mV rms).
• Verify the audio generator's output
level.
6.4~12.8 mV rms
~ D-sub connector~
2 • Turn off the output of the audio
generator connected to JIG cable 1.
• Connect the audio generator and
the AC millivoltmeter through the
JIG cable 2 to J502 on the MAIN-A
unit, and set it to:
Frequency: 1 kHz (Sine wave)
• Transmitting
• Adjust the audio generator's output
level so that the distortion meter
shows 600 mV rms (±50 mV rms).
• Verify the audio generator's output
level.
212.3~423.7 mV rms
AUDIO OUTPUT
LEVEL (at 10%
distortion)
~ Microphone
connector~
1 • Turn off the output of the audio
generator connected to JIG cable 2.
• Turn on the output of the audio
generator connected to JIG cable 1,
and set it to:
Frequency: 1 kHz (Sine wave)
• Set the audio volume level to 32.
• Transmitting
• Adjust the audio generator’s output
level so that the distortion meter
shows 10%.
• Verify the audio output level.
More than 4 V rms
2 • Connect the AC millivoltmeter
through the JIG cable
1 to the
AFO terminal of the microphone
connector.
• Transmitting
• Verify the audio output level at the
AFO terminal of the JIG cable 1.
200~300 mV rms
~ D-sub connector~
3 • Turn off the output of the audio
generator connected to JIG cable 1.
• Turn on the output of the audio
generator connected to JIG cable 2.
• Connect the AC millivoltmeter
through the JIG cable
2 to the AFO
terminal of J502 on the MAIN-A unit
• Transmitting
• Verify the audio output level at the
AFO terminal of the JIG cable 2.
RESIDUAL NOISE
1 • Turn off the output of the audio
generator connected to JIG cable 2.
• Set the audio volume level to 1.
• Transmitting
• Verify the audio output (residual
noise) level.
Less than 5 mV rms
5-4 BLUETOOTH UNIT
VERIFICATION ITEM
SETUP
OPERATION
VALUE
TRANSMIT
OUTPUT POWER
1 • Enter to the Bluetooth check mode.
• Connect the spectrum analyzer to
J604 on the MAIN-A unit.
• Transmitting
• Verify the Bluetooth output power.
RF signal is output
AF ROUTE
1 • Connect the AC millvoltometer
through the JIG cable 1 to AFO
terminal of the microphone
connector.
• Enter the Bluetooth loop back
mode.
• Set the audio volume level to 32.
• Transmitting
• Verify the audio output level at the
AFO terminal of the JIG cable 1.
40~90 mV rms
