7
Controls and Indicators
Communications Panel
Thermo Scientific TSQ Altis, Quantis, and Fortis Hardware Manual 29
Table 3. Pin-out descriptions for the communication connectors (Sheet 1 of 2)
Pin Name Description
– Reset Resets the instrument to a power-up state.
Note Use this button only if the instrument does not
respond to the control program on the data system
computer or if you need to restart the instrument
without turning off the electronics service switch.
Peripheral Control
1Ground Earth ground
2 5V Provides a 5 Vdc, 500 mA output (with pin 1).
4 Start In Receives the start signal from the contact closure
connection of a connected external device.
To activate this signal, the external device must pull the
signal either low (below 0.75 Vdc) or high (above
2.4 Vdc), depending on the polarity, for at least
100 ms by using a relay, an open-collector driver, or a
similar device that connects between pins 4 and 1.
Note In the Instrument Configuration window, set
the contact closure signal to “High-to-low edge” or
“Low-to-high edge,” whichever matches the setting
for the connected external device.
5 Ready Out Provides a relay-driven programmable output signal to
the connected external device. The relay opens when a
method starts and closes when the method finishes.
Output: Maximum 24 Vdc, 3 A
6 Injection Hold Provides a relay-driven programmable output signal to
the connected external device, such as a fraction
collector.
Output: Maximum 24 Vdc, 3 A
8 RO/IH Common (return) connection for the Ready Out and
Injection Hold pins
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