Schambeck SFD GmbH
Refractive Index Detector RI2000
SFD101.01.3x.EN / 2014-07-10
15
http://www.schambeck-sfd.com
10.2 I
NPUT
-C
ONNECTORS
The RI2000 refractive index detector has three digital (TTL) inputs.
These can be used to control the system externally.
10.2.1 T
HE
E
XTERNAL
S
TART
S
IGNAL
Use the digital input connector (Dig.) to connect an external start signal (e. g. generated by
an autosampler or a manual injector) to the instrument.
10.2.2 T
HE
E
XTERNAL
A
UTO
Z
ERO
S
IGNAL
Use this input connector (AutoZero) to connect an external AutoZero signal to the
instrument.
10.2.3 T
HE
E
XTERNAL
P
URGE
S
IGNAL
Using this connector (Purge) you can use an external signal to activate the detector’s purge
mode.
■
NOTE
All TTL signals handled by the RI2000 detector use a TTL level which is based on
instrument’s ground potential.
10.3 T
HE
RS232
P
ORT
The RS232 port can be used to acquire the detector’s signal using a personal computer as
well as to control the instrument using the computer. To communicate with the detector
using a computer you need to use a certain protocol which is explained in
chapter 15.6
of
this manual.
10.4 M
ASS
S
CREW
Use the mass screw to connect the shielding of the analog signal cable to the detector’s
chassis. This will result in a smoother detector signal.
