8. Performance Test

After finishing station No.24 programming, perform operation tests from each station. Write down

the test results in "Initial Checking Sheet".

8-1 Speech and Function Tests

1.Speech Test

*Under the normal condition, make conversation using the stations connected to the exchange and check the sound volume and sound quality.

*According to the operation environment (surrounding noise, echo, installed location, etc.), the microphone sensitivity or speaker volume needs to be adjusted for hands-free con- versation.

*When the paging function is employed, adjust the gain of the paging amplifier or change the installed location of the speakers and stations to eliminate feed-back.

Noisy area

Station A

Quiet area

Station B

Surrounding noise at

< Method of Speech test>

(1) Hands-free conversation

1.Call the other station.

2.Start conversation about 50 cm away from each station to check the sound quality and its volume.

3.Confirm that the automatic voice switching allows for smooth conversation.

4.When the other station is in a very noisy area, the voice switches are liable to fail to work properly, causing the voice from the station in a quiet area to be interrupted. In this case, adjust microphone sensitivity and speaker sound volume according to the operating instructions contained in a package of each station.

(2)Conversation between a handset station and a handsfree station

1.Call the other station.

2.Start conversation and check the sound quality and sound volume and also confirm that simultaneous conversation is possible.

3.When feed-back occurs, adjust the microphone sensitivity or speaker volume of the hands-free station.

(3)Handset conversation

1.Call the other station.

2.Start conversation and check the sound quality and sound volume and also confirm that simultaneous conversation is possible.

Voice from station B is in-

terrupted.

Press

key to talk

and release it to listen.

station A has dominance. (Voice from station B is almost impossible.)

Speak loudly or

Press

key to talk.

2. Function Test

Confirm that each function works properly by performing tests

according to operation manual.

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ViewSonic EXES-2000 Performance Test, Speech and Function Tests Speech Test, Method of Speech test Hands-free conversation