Hamilton Air 5000 Series Installation & Service Manual page 37

Audio issues – Isolate audio problems by determining if the problem exists only when using a
particular audio console or when communicating with a particular lane. Before deciding that a
particular console is bad, try plugging it into a different port of the matrix. Lane connectors can also
be swapped at the matrix to see if a problem follows the physical lane or stays with the same lane
number on the matrix. Be aware that the main amplification for outgoing audio is in the matrix but
the main amplification for incoming audio is in the console.
Intermittent problems with the quality of audio are often caused by overdriving the audio processor
(volume levels too loud) or speaking too close to the console mic. Also make sure that the proper
type of cable is being used. Many times when equipment is upgraded the cabling from the matrix to
the lane is reused. That cable may not be acceptable for the new system. See the section "Cable
Considerations".
Video issues – Some video issues can be isolated by swapping cameras or monitors at the video
matrix. You can disconnect a lane camera and a teller monitor from the matrix and connect them
together with a barrel connector. Other combinations of cameras and monitors can be connected
together like this to rule out a possible video matrix problem. Barrel connectors and patch cables
are tools that should be carried by technicians installing or servicing this type of equipment.
The auxiliary video input of the matrix can be tested by temporarily moving a lane camera or teller
camera to the auxiliary input. Remember that the auxiliary input must be composite video. If a
particular source for the auxiliary video won't work through the matrix, but it will work when
connected directly to a monitor, try changing feature switch #2 on the video matrix to the opposite
position.
Also don't forget to check for the proper setting of the termination switches on the matrix. Improper
termination is responsible for many video problems such as inconsistently locking onto a lane
camera when that lane is selected by a teller. The section "Video Matrix Switch Settings" gives
details about the termination switches and t-tapping video cables.
Wireless Headset issues –Make sure the battery has a full charge before using the headset. With the
Plantronics CS50 / CS55 the amber light on the base unit will blink while the battery is charging and
will light steady when charging is complete. The CS50 / CS55 headsets are mated units so mixing up
a headset with the wrong base unit will give the impression of a defective unit. Also this headset can
occasionally get into a state where it will not work – it may just produce loud static. To clear this
condition put the headset through a reset as follows:
1. Press both the talk button and the mute control button on the headset for 5 seconds. The mute
control is the volume dial pressed in.
2. When the talk indicator light on the headset blinks, release both buttons.
3. Press the talk button again.
4. Next reset the base unit by unplugging the power connector from the base for 5 seconds.
If it is necessary to use an unmated headset and base, the units must be re-subscribed as follows:
1. Place the headset in the charge cradle and leave it there for the entire procedure.
2. Press and hold both talk volume fine tune buttons on the back of the base for 5 seconds until
the power indicator flashes red.
3. Press and hold the headset mute control button for 5 seconds until the talk indicator on the
headset lights green. Successful re-subscription is indicated when the power indicator light
comes on steady and the talk indicator light goes off.
4. To complete the process, reset the base by unplugging the power connector from the base for
5 seconds, then reconnect.
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