Varian 920-LC User Manual

Using the UV-Vis detector Sync.doc, Page 1 of 2
Using the UV-VIS Detector Sync Signals on the 920-LC/940-LC.
UV-VIS detector Ready, Start, and Fault inputs can be triggered, and UV-VIS detector Ready, Start
and fault outputs can be detected, using the signals from the Detector Sync connector at the rear of the
Varian 920-LC/940-LC instrument.
A circuit board with screw terminals to plug into the
Detector Sync connector is available (P/N 02-102285-00)
to be used with a customers own flying lead cable. This
board does not have any electronics on it, it just provides
a terminal block to screw wires into. Alternatively the
customer can assemble their own cable with the desired
terminations themselves.
These circuit diagrams show the electrical interface of
these signals inside the Varian instrument, to enable
anyone to use these signals.

Varian 920-LC Specifications

General

Type	HPLC System
Manufacturer	Varian
Model	920-LC
Flow Rate Range	0.001 to 10 mL/min
Pressure Range	Up to 6000 psi
Pump Type	Binary Gradient
Detector Type	UV-Vis
Wavelength Range	190 to 900 nm (UV-Vis)
Autosampler	Optional
Column Oven	Optional
Data System Compatibility	Galaxie Chromatography Software

Summary

UV-VIS Detector Sync Signals

Detector Sync Connector Pinout

Details the pin assignments for UV-VIS detector sync signals on the J1 connector.

Connection Options for Sync Signals

Describes circuit board and custom cable assembly options for signal interface.

Detector Input Signal Circuits

Explains internal circuitry for Ready, Start, and Fault input signals.

Detector Output Signal Circuits

Explains internal circuitry for Ready, Start, and Fault output signals.

Detector Power Supply for Outputs

Details the +5V power supply circuit for output signals.