Measurement Computing BTH-1208LS - Manual (Page 15)

BTH-1208LS User's Guide Functional Details
15
Digital I/O bit 0
Digital I/O bit 1
Digital I/O bit 2
Digital I/O bit 3
Digital I/O bit 4
Digital I/O bit 5
Digital I/O bit 6
Digital I/O bit 7
Digital ground
User voltage output
Digital ground
Digital ground
External pacer clock input
Counter input
Digital trigger input
Digital ground
Analog input 0 HI
Analog input 0 LO
Analog ground
Analog input 1 HI
Analog input 1 LO
Analog ground
Analog input 2 HI
Analog input 2 LO
Analog ground
Analog input 3 HI
Analog input 3 LO
Analog ground
Analog output 0
Analog ground
Analog output 1
Analog ground
BTH-1208LS
CH0H
CH0L
AGND
CH1H
CH1L
AGND
CH2H
CH2L
AGND
CH3H
CH3L
AGND
AOUT0
AGND
AOUT1
AGND DIO0
DIO1
DIO2
DIO3
DIO4
DIO5
DIO6
DIO7
GND
+VO
GND
AICKI
CTR
TRIG
GND
GND
The differential mode pinout is shown in Figure 4.
Figure 4. Differential mode pinout
Signals
Analog input
You can connect up to eight single-ended analog inputs ( CH0 to CH7 ) or four differentials ( CH0H/CH0L to
CH3H/CH3L ).
Single-ended configuration
When configured for single-ended input mode, eight analog input channels are available. Each analog input has
11-bit resolution (due to restrictions imposed by the A/D converter) and offers a ±10 V analog input range.
The input signal is referenced to signal ground ( AGND ), and is delivered through two wires:
 Connect the wire carrying the signal to be measured to
CHx .
 Connect the second wire to
AGND .