VIEWSONIC EXES-2000 - Manual (Page 39)

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.
< 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.
2. Function Test
Confirm that each function works properly by performing tests
according to operation manual.
Noisy area
Station A
Voice from station B is in-
terrupted.
Press key to talk
and release it to listen.
Quiet area
Station B
Surrounding noise at
station A has dominance.
(Voice from station B is
almost impossible.)
Speak loudly or
Press
key to talk.
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