beautypg.com

Bulkhead signals (j3) – Measurement Computing BTH-1208LS-OEM User Manual

Page 26

background image

BTH-1208LS-OEM User's Guide

Specifications

26

Bulkhead signals (J3)

Table 26. Bulkhead signals

Pin

Signal name

Pin description

Pin

Signal name

Pin description

1

BATT+

Battery input positive
(2 AA/AAA cells)

2

BATT-

Battery input negative

3

BATT_MID

Battery center tap

4

GND

Ground

5

THERMISTOR+

10 k

Ω thermistor positive

(battery temperature sensing)

6

THERMISTOR-

10 k

Ω thermistor negative

7

PWR SW+

SPST contact 1 (power switch)

8

PWR SW-

SPST contact 2

9

PAIRING SW+

Momentary contact 1 (pairing /
soft power switch)

10

PAIRING SW-

Momentary contact 2

11

LED1+

LED1 anode

12

LED1-

LED1 cathode

13

LED2+

LED2 anode

14

LED2-

LED2 cathode

15

Vbus

USB 5 V supply (charging LED
anode)

16

CHARGE LED-

Charging LED cathode