Noraxon TeleMyo 2400T V2 User Manual page 43

Noraxon U.S.A., Inc.
2. Other analog signals
The TeleMyo 2400T input channels can accept analog signals in the range of +/- 5 Volts. Noraxon offers
special adapter cables that allow signals from other Noraxon supplied battery operated devices to be used in
conjunction with EMG signals. For example, Noraxon footswitch and electro-goniometer products can be
substituted for any of the 8 EMG inputs by exchanging an adapter cable for the active lead.
Noraxon also offers, as an option, the TM2400T Analog Signal Isolation Unit. This provides 3 or 6
channels of analog signal isolation and is meant for use with analog signals originating from AC (wall
powered) equipment. A typical example would be interfacing to an isokinetic machine to monitor joint
position and applied torque along with EMG.
Only Noraxon approved analog signal sources should be applied to the
transmitter input connectors. Generally, signals from battery operated
devices pose no concern. However, signals arriving from AC powered
devices must never be directly attached to the transmitter.
Frequent plugging and unplugging of inputs can prematurely wear out the
transmitter input connectors. It is advisable to always inspect the
connectors for bent or loose pins before attaching an input.
3. Transmitter Battery Charger
The TeleMyo 2400T transmitter can be recharged using the supplied Transmitter Battery Charger power
source. When using this power source, it is very important to follow the instructions written in the
"Charging the Battery" section of this manual to ensure safety. If a replacement power source is needed,
contact Noraxon World Headquarters as only Noraxon certified parts and chargers must be used.
Transmitter-to-transmitter Sync Cable
4.
When using more than one TeleMyo 2400T transmitter, it is necessary to 'daisy chain' each system
together using the transmitter-to-transmitter Sync Cable. To do this, simply locate the system labeled "A"
and connect the transmitter-to-transmitter Sync Cable to the Sync Out connector. Next, connect the
transmitter-to-transmitter Sync Cable to the system labeled "B" to the Sync In connector. When connected
properly, both transmitters will communicate to the Receiver (either PC LAN card or TeleMyo 2400R
Receiver) in the correct order.
It is important to fully connect all transmitter-to-transmitter Sync
Cables to all transmitters before applying any EMG leads to the patient.
If attached at only one end, the free end of the Sync Cable could touch an
electrified object and expose the patient to a shock hazard.
All cables that are attached to the TeleMyo 2400T system are only
intended for connection to equipment that comply with IEC 60601-1 and
must be supplied or approved by Noraxon. Noraxon will not be held
responsible for any failures that occur by using parts that do not comply
with these specifications.
P-2308TV2 Rev G (06-06-11)
TeleMyo 2400T V2
42