Operation; Card Reading / Transactions; About The General Status Led - Magtek mDynamo Installation And Operation Manual

4 - Operation

4 Operation
4.1

Card Reading / Transactions

Transactions begin when the host software initiates them. Cardholders should insert cards according to
the card orientation guide on the bezel (see Figure 3-2 - mDynamo with Outdoor Bezel Mounting
Orientations).
If a cardholder inserts a contact chip card, the device detects the chip and attempts to communicate with
the card. The host software may choose to use the notifications from the device as events to trigger
additional guidance (such as audible, visual, or tactile feedback) to the cardholder. For example, for chip
cards, the host software may direct cardholders to leave the card inserted until the transaction is complete,
then to remove the card.
Before and during transactions, an operator may control or monitor the device using the host software
and/or the General Status LED, which is a red/green LED that can be host-controlled.
Programmers of host software should see section 6 Developing Host Software for cross-references to
programming tools and documentation for communicating with the device.
4.2

About the General Status LED

The device's General Status LED can be used to provide feedback to operators and cardholders about the
internal state of the device. Custom software on the host the device is connected to may completely
customize / override the External LED behavior.
Table 4-1 shows how to interpret the colors and flashing patterns of the General Status LED if the host is
not overriding the
LED
Table 4-1 – General Status LED Meaning
Color
Off Off
Green Steady On
Red Steady On
mDynamo with Outdoor Bezel| IP34 Rated EMV Chip Card Module | Installation and Operation Manual
behavior.
Flashing Pattern
Page 18 of 23 (D998200546-10)
Meaning
The device is not receiving adequate power from
the host via the USB port.
The device is ready to read a card.
An operator is updating the firmware. On
completion, the device will reset and the LED will
turn off briefly.