Instructions

ManualsBrandsVernier ManualsMeasurement, Diagnostics & Power Supply UnitsVernier GDX-EKG Multifunction tester LED Manufacturer's standards (no certificate)

the power button once. The

Bluetooth

LED will blink red.

4. Launch Graphical Analysis 4.

5. Click or tap Sensor Data

Collection.

6. Click or tap your Go Direct sensor

from the list of Discovered

Wireless Devices. Your sensor's ID

is located near the barcode on the

sensor. The Bluetooth LED will

blink green when it is successfully

connected.

7. This is a multi-channel sensor. The

active channel is listed in the

Connected Devices Sensor

Channels list. To change channels,

select the check box next to the

Sensor Channel(s) you would like

to activate.

8. Click or tap Done to enter

data-collection mode.

2. Connect the sensor to the USB port.

3. Launch Graphical Analysis 4 or turn

on LabQuest 2. You are now ready

to collect data.

4. This is a multi-channel sensor. To

change the default channel

selections, see

www.vernier.com/start/gdx-ekg

WARNING: To avoid possible electric shock or personal injury, only use this

product as designed. This product is designed to measure low-voltage,

bio-electric signals, such as EKGs and EMGs. It should never be connected to

an electrical outlet.

Charging the Sensor

Connect Go Direct EKG to the included USB Charging Cable and any USB

device for two hours.

You can also charge up to eight Go Direct EKG Sensors using our Go Direct

Charge Station, sold separately (order code: GDX-CRG). An LED on each

GoDirect EKG indicates charging status.

Charging

Orange LED next to the battery icon is solid

while the sensor is charging.

Fully charged

Green LED next to the battery icon is solid

when the sensor is fully charged.

Go Direct

EKG

(Order Code GDX-EKG)

Go Direct EKG measures electrical

activity in the heart and electrical

signals produced during muscle

contractions. The wireless options

minimize the concern of cables getting

caught and tangled during experiments. This sensor provides two separate

outputs: one optimized for standard 3-lead EKG tracings and one optimized for

surface EMG recordings.

Go Direct EKG can be used in a variety of experiments:

l Compare and measure students’ electrocardiogram (EKG/ECG) waveforms.

l Determine heart rate by examining the number of QRS waveforms over a

period of time.

l Study contractions of muscles (EMG) in the arm, leg, or jaw.

l Correlate measurements of grip strength and electrical activity with muscle

fatigue.

Note: Vernier products are designed for educational use. Our products are not

designed nor are they recommended for any industrial, medical, or commercial

process such as life support, patient diagnosis, control of a manufacturing

process, or industrial testing of any kind.

What's Included

l Go Direct EKG

l One package of disposable electrodes (100)

l Micro USBCable

Compatible Software

See www.vernier.com/manuals/gdx-ekg for a list of software compatible with

GoDirect EKG.

Getting Started

Please see the following link for platform-specific connection information:

www.vernier.com/start/gdx-ekg

Bluetooth Connection USB Connection

1. Install Graphical Analysis 4 on

your computer, Chromebook™, or

mobile device. See

www.vernier.com/ga4 for software

availability.

2. Charge your sensor for at least

2hours before first use.

3. Turn on your sensor by pressing

1. If using a computer or Chromebook,

install Graphical Analysis 4. If using

LabQuest 2, make sure LabQuest

App is up to date. See

www.vernier.com/ga4 for Graphical

Analysis 4 availability or

www.vernier.com/downloads to

update LabQuest App.

Summary of content (6 pages)

PAGE 1
® Go Direct EKG (Order Code GDX-EKG) 4. 5. Go Direct EKG measures electrical activity in the heart and electrical signals produced during muscle contractions. The wireless options minimize the concern of cables getting caught and tangled during experiments. This sensor provides two separate outputs: one optimized for standard 3-lead EKG tracings and one optimized for surface EMG recordings. 6. Go Direct EKG can be used in a variety of experiments: l l l l 7.
PAGE 2
Powering the Sensor Using the Product Turning on the sensor Press button once. Red LED indicator next to the Bluetooth icon flashes when the unit is on. Putting the sensor in sleep mode Press and hold button for more than three seconds to put into sleep mode. Red LED indicator next to Bluetooth icon stops flashing when sleeping. Connect the sensor following the steps in the Getting Started section of the user manual. Electrode Placement for EKGs 1.
PAGE 3
Specifications Range ±200 mV Resolution 24 µV EKG channel settings High-pass: 0.300 Hz Low-pass: 22.
PAGE 4
Water Resistance the left atrium quickly enough that both atria contract at essentially the same time. Important: Go Direct EKG is not water resistant and should never be immersed in water. The atria and the ventricles are isolated from each other electrically by connective tissue that acts like the insulation on an electric wire. The depolarization of the atria does not directly affect the ventricles.
PAGE 5
The QRS wave complex denotes depolarization of the ventricles and is associated with their contraction. Atrial repolarization occurs during the depolarization of the ventricles. For this reason, the waveform associated with atrial repolarization is undetectable on an EKG. The last wave is called the T wave, and is usually represented by a positive deflection. The T wave indicates ventricular repolarization. l l l l Electrode tabs should be fresh and can be used only once.
PAGE 6
The symbol, shown here, indicates that this product must not be disposed of in a standard waste container. Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.