Measurement Computing LGR-5320 Series - Manual (Page 12)

12
Chapter 3
Functional Details
External components
The external components of a LGR-5320 Series device shown in Figure 4 are explained in the following
sections.
1 Screw terminals 1 through 48 5 SD card slot
2 Function buttons and LEDs 6 External power connector
3 Screw terminals 49 through 96 7 USB connector
4 Recessed reset button 8 Power LED (top) and USB activity LED (bottom)
Figure 4. LGR-5320 Series external components
Function buttons and LEDs (top of case)
Each function button on the top of a LGR-5320 Series device case is explained below. All buttons and LEDs are
disabled when a LGR-5320 Series device is connected to a USB port.

SD ACT LED—Blinks when data is read from or written to the SD card.
Caution! Do not remove the SD card when the
SD ACT LED is blinking.

SD STAT LED—Turns on for one second if you attempt an operation without inserting an SD card in the
slot.
The LED blinks when:
o the logger detects an error on the SD card or SD drive
o the configuration file on the SD card is invalid
o a data overrun error has occurred when the device is logging data