Waters GCT Premier Operator's Manual page 37

Analog Inputs
To avoid electric shock and damage to the instrument, do not
Warning:
apply more than 16 V to any of the analog input connections.
Four analog input channels are available for acquiring simultaneous data,
such as a flame ionization detector output. The input differential voltage must
not exceed one volt.
See also: Figure titled "Analog Inputs, Contact Closure Inputs, and Contact
Closure Event Out outputs:" on page 1-14
page 4-10.
Contact Closure Inputs
The In1 and In2 inputs allow an external device to start sample acquisition
once the device performed its function (typically sample injection).
Normally, the GC is connected to contact closure input In1. When the GC
makes an injection it sends a signal via this connection to start the GCT
Premier acquiring data.
To avoid electric shock and damage to the instrument, do not
Warning:
apply more than 5 V to any of the contact closures inputs.
See also: Figure titled "Analog Inputs, Contact Closure Inputs, and Contact
Closure Event Out outputs:" on page
Contact Closure Event Out
Warning: To avoid electric shock and damage to the instrument, do not
apply more than 24 V to any of the Event Out connections.
When the connections are configured as voltage outputs, do not apply
any load greater that 250 mA.
Four Event Out connections, Out1 to Out4, allow various peripherals to be
connected to the system.
The Event Out selector switches the outputs, Out1 to Out4, between voltage
out and the contact closure. The voltage output of Out1 and Out2 is 5 V, the
voltage output of Out3 and Out4 is 24 V.
and
1-14.
Controls and connectors on instruments' rear panel
Acquiring analog data on
1-15