Hach Polymetron 9610sc SiO2 Installation Manual page 17

Connect to the digital inputs
The analyzer can receive a digital signal from an external device, such
as a flow meter to stop measurements when flow stops. Each discrete
input is used to enable/disable the corresponding sample channel.
Each digital input can be configured as an isolated TTL type digital input
or as a relay/open-collector type input. Refer to
jumpers are set for isolated TTL type digital input. Refer to
connections overview on page 13 to connect the device.
Figure 15. By default, the
Wiring
Install additional modules
Modules can be added for additional output, relay or communications
options. Refer to the documentation that is supplied with the module.
Figure 15 Isolated TTL type digital input
1 Jumper (12x)
2 Digital input connectors
3 Isolated TTL type digital input
4 Relay/Open-collector type input
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