Printed in the Federal Republic of Germany
TR-Electronic GmbH 2011, All Rights Reserved
02/08/2016
TR - ELE - BA - DGB - 0022 - 04
Page 95 of 139
6.3.1 Wiring of Digital Input DI1
The Digital Output DO1 can be configured as a Digital Input (DI1). This is useful for
triggering measurements by means of an external switch or push button.
Low level: U
DI1
< 2 V DC
High level: U
DI1
> 13 V DC and U
DI1
< 30 V DC
Using the Digital Input DI1 disables the Digital Output DO1.
Configuration see chapter “Digital Input / Output 1” on page 120.
For safety reasons, always use a resistor to protect the connection terminal.
Figure 2: Wiring for external triggering
6.3.2 Wiring of the Digital Outputs DO1, DO2, DOE
The LLB contains two digital outputs for level monitoring (DO 1 and DO 2) and one
digital output for error signalization (DO E). These outputs are open drain outputs as
shown in Figure 3 and can drive up to 200 mA. Maximum switching voltage is
30 V DC. In the ON state, the FET transistor is electro conductive.
Configuration see page 120 and 121.
Figure 3: Wiring of the Digital Outputs
DOUT
On
