Matrix Orbital GLK240128-25 - Manual (Page 16)

Command Summary 11
4.2 USB Model
Mini USB Connector
Figure 10: Mini USB Connector
Table 6: Mini USB Pinout
Pin Function
1 Vcc
2 D-
3 D+
5 Gnd
The GLK240128-25-USB/GLT240128-USB comes with a familiar Mini USB Connector to fulfill both
communication and power needs
* . The standard MiniB style header can be connected to any other USB
style using the appropriate cable. Most commonly used with a PC, this connection creates a virtual com
port that offers a simple power solution with a familiar communication scheme.
Alternate USB Header
Some advanced applications may prefer the straight four pin connection offered through the Optional
Alternate USB Header. This header offers power and communication access in a simple interface
package. The Optional Alternate USB Header may be added to the GLK240128-25-USB/GLT240128-USB
for an added charge as part of a custom order. Please use the Contact section to request more
information from the friendly Matrix Orbital sales team.
Alternate Power Connector
Figure 11: Alternate Power Connector
Table 7: Alternate Power Pinout
Pin Function
1 Vcc
2 Gnd
3 Gnd
4 NC
The Alternate Power Connector provides the ability to power the GLK240128-25-USB/GLT240128-USB
using a second cable
* . The Tyco 171825-4 style header is particularly useful for connecting to an
unmodified floppy power cable, a 171822-4 for example, from a PC power supply for a simple bench
power solution.
*Note: The YG version of the GLK240128-25-USB/GLT240128-USB may draw more than the 500mA of current
permitted by USB standards and will require the alternate power connection.