How To Power On / Wake Up From Standby Mode / Power Off; About Maintenance Reset; Card Reading; About Reading Cards - Magtek DynaFlex II Go Installation And Operation Manual

7 - Introduction to User Interface
source, make sure the LEDs indicate the device is charging (see sec 4.3.1 How to Connect DynaFlex II
Go to a Host Computer via USB-C)
For important information about the device's power systems, optimal charging methods during regular
use, optimal handling and storage, and other information about keeping the device's power systems in the
best possible condition, see section 3.2 Handling to Avoid Accidental Tamper and section 7.8.1 About
Power.

7.8.3 How to Power On / Wake Up from Standby Mode / Power Off

To power on the device connect the device to USB power. Recommended 800 mA available current
during transactions. To power off the device, disconnect the device from USB power. Press and hold the
power button (see Figure 6-1 - Power Button) on the device (for two beeps), all LED indicators should
power off and remain unlit. If all LEDs are off, the device is in Powered Off mode. It is important to note
the device cannot be powered off when connected via USB.

7.8.4 About Maintenance Reset

For full host control, the device should not be allowed to run for longer than 23 hours without a reset. To
accomplish this, have the host application send a reset command twice a day separated by at least one
hour.
Example: Host software resets the device at 1 AM and 3AM. This keeps the device from initiating its
own reset.
7.9

Card Reading

7.9.1 About Reading Cards

The steps for starting a transaction and reading a contactless payment device are different depending on
the device's configuration and on the design of the host software. Host software developers should see
section 9 Developing Custom Software for implementation references. The solution developer should
provide solution-specific instructions for operators to follow. A transaction generally follows this
essential flow:
1) An advanced operator has already made sure DynaFlex II Go is configured properly and is connected
to the host (see section 4.3 Connecting DynaFlex II Go to a Host). When the device is connected to
the host and powered via the USB-C connector or internal rechargeable battery, the host software
may keep a connection open to the device.
2) The operator makes sure DynaFlex II Go is receiving power either from the USB connection, or from
the internal rechargeable battery, and is awake and powered on (see section 7.8.3)
3) The operator uses the host software's user interface (for example, a point of sale) to finalize a
transaction amount, then initiates a transaction. In solutions that are designed to respond to
cardholder input events that occur when the device is idle, such as unprompted tapping of a card or
electronic payment device, the host software may respond to those inputs by notifying the host. The
host software may trigger other operations without being initiated by an operator (for example, the
host software may immediately start a transaction, or alert the cardholder or operator to take action).
4) The host communicates with the device, and reports to the operator when the device is ready.
5) The operator guides and assists the cardholder in presenting payment.
6) The cardholder interacts with the device to present payment. The following sections provide
additional details about presenting each of the available payment methods.
7) The host monitors the progress of the transaction, and when necessary, and should report issues to the
operator, who may need to relay the messages to the cardholder.
8) The device reports the success or failure of the transaction to the cardholder and to the host.
DynaFlex II Go| EMV Contactless/NFC Card Reader | Installation and Operation Manual
Page 38 of 55 (D998200595-100)