Card Connectors; Wiring Procedure; Figure 2-2 Card Connectors; Figure - Keithley 2001-TCSCAN Instruction Manual

2.3.2 Card connectors

Figure 2-2 shows the input/output connectors for the card.
Card connections include:
• CH 2-10 (channels 2-10): HI and LO input terminals
are provided for each of the nine channels on the card.
Channels 5 and 10 have current-limiting
resistors installed. Path resistance for
these two channels is approximately
240 Ω .
• OUT A: HI and LO output connections for all nine
channels in the 2-pole mode or channels 2-5 in the 4-
pole mode.
• OUT B: HI and LO output connections for channels 7-
10 in the 4-pole mode.
In order to gain access to the connections, first open the plas-
tic shield by pressing in on the locking tab. Swing the shield
away from the circuit board.
Input/Output Connectors
Locking Tab

Figure 2-2

Card connectors
NOTE
HI LO HI LO HI LO HI LO HI LO
CH 2 CH 3 CH 4 CH 5 CH 6

2.3.3 Wiring procedure

Perform the following procedure to wire circuitry to the
screw terminals on the scanner card.
Make sure all power is off and any
stored energy in external circuitry is
discharged before connecting or discon-
necting wires.
Mechanical shock may open or close
latching relays on the scanner card. Be-
fore enabling any external sources, open
all relays by inserting the Model 2001-
TCSCAN into the DMM and turning on
the power.
Reference Junction Sensor
HI LO HI LO HI LO HI LO HI LO HI LO
CH 7 CH 8 CH 9 CH 10 OUT A OUT B
Plastic Shield
Card Connections and Installation
WARNING
CAUTION
Reference Junction Circuitry
2-3