Chapter 3 Functional Details; External Components; Function Buttons And Leds (Top Of Case) - Measurement Computing LGR-5320 Series User Manual

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
2 Function buttons and LEDs
3 Screw terminals 49 through 96
4 Recessed reset button

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.

LED—Blinks when data is read from or written to the SD card.
SD ACT
Caution! Do not remove the SD card when the

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:
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
o
5 SD card slot
6 External power connector
7 USB connector
8 Power LED (top) and USB activity LED (bottom)
Figure 4. LGR-5320 Series external components
SD ACT
12
LED is blinking.
Chapter 3