Chapter: MODEL 202 DATASYSTEMHARDWARE
Topic:
Model 202 Installation Connections
STEP 1:
Connecting the analog signal cable(s):
NOTE: The analog output from some GCs or LCs can have a range of up to
10 volts dc. Although the Model 202will allow high voltage inputs such as this;
be advised that signals above 6 voltswill generate unwanted noise and signals
above 5 volts will be "cl ipped". (The tops of the waveformswill be cut off.)
Route the analog signal cables from your instrument through the open hole in the
back of the Model 202.
Strip 1/4" of insulation off of the 'signal
+'
and 'signal-' wires of your signal cables.
Insert 'signal +' into the Lawson 202 board screw terminal marked 'CH1 sig +' and
secure theconnection using a small screwdriver.
Insert 'signal -' into the Lawson 202 board screw terminal marked 'CH1 sig -' and
secure theconnectionusing a small screwdriver.
Repeat the connection of signal cables for channels 2, 3 and 4.
Any unused channels MUST have both inputs jumpered to ground.
STEP 2:
(OPTIONAL) Connecting the remote start cable(s):
NOTE: The Model 202 offers remote starting capability as a standard
feature. Twoseparate remote start circuitspermit theuser tostart the
MAIN and ALTERNATE Trigger Groups of the data systemby means
of a switchclosure, suchasa footswitch. Insomeapplications, the
chromatograph being used with the Model 202 may offer a remote
start signal output or switch closure output that permits starting an
integrator or other device when the START button is pressed on the
chromatograph's on-board control panel. Typically, this signal can be
used to start the Model 202.
Route the remote start cable from your instrument through the open hole
in the back of the Model 202.
Strip 1/4" of insulation off of the
'+'
and '-' wires of your remote start cable.
Insert
'+'
into the RELAY (serps) board screw terminal marked '#1 IN' and
secure theconnectionusinga smallscrewdriver.
Insert' .: into the RELAY (serps) board screw terminal marked '#1 G' and
secure theconnectionusing a small screwdriver.
NOTE: Be sure to check the "Remote Start" box in the PeakSimple For
Windows EDIT - CHANNELS - DETAILS screen for the appropriate
channels. Refer to the "PeakSimpIe For Windows" section of this manual.
STEP 3:
(OPTIONAL) Connecting the external event relay wires:
The Model 202 features eight 0-5 vol t TIL Level outputs that may be turned on
and off individually and automatically by means of a timed event table.
Manual control is also available via the keyboard.
These outputs may be used to control external events or devices. If TIL level
outputs are not adequate for your application, the Model 202 is also equipped
with eight relay circuits offering normally open (NO) and normally closed (NC)
contact closures.
