Sel SEL-2241, Quick Start Manual

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SEL-2241 Data Sheet Schweitzer Engineering Laboratories, Inc.
4
Step 4. Install the new battery with the positive (+) side
facing up.
Step 5. Follow the SEL-2241 Reassembly instructions.
Step 6. Set the device date and time.
DANGER
Disconnect or de-energize all external connections before opening this
device. Contact with hazardous voltages and currents inside this device
can cause electrical shock resulting in injury or death.
CAUTION
The device contains devices sensitive to Electrostatic Discharge (ESD).
When working on the device with the front panel removed, work surfaces
and personnel must be properly grounded or equipment damage may result.
Jumpers
The SEL-2241 RTAC jumpers come preset and should
not be moved except as
Section 3: Factory Reset in the
SEL-2240 Instruction Manual describes. Table 3 shows
the configurable jumper positions.
SEL-2241 Disassembly
To disassemble the SEL-2241 RTAC, perform the fol-
lowing steps.
Step 1. Follow the Module Replacement instructions.
Step 2. Remove the six retaining screws (two top, two
rear, two bottom).
Step 3. Place the module on its side and lift the cover to
expose the circuit board.
SEL-2241 Reassembly
To reassemble the SEL-2241 RTAC, perform the follow-
ing steps.
Step 1. Gently close the cover until the retaining screw
holes are aligned.
Step 2. Replace the six retaining screws.
Step 3. Follow the Mechanical Installation instructions.
Table 3 Configurable Jumper Positions
Jumper Position
JMP1 OPEN
a
a
Factory-default position.
JMP2 OPEN
a
JMP3 OPEN
a
JMP4 1–2
a
Routes IRIG
-
B+ to COM 1 Pin 4
3–4 Routes DTR signal to COM 1 Pin 4
5–6
a
Routes IRIG
-
B ground to COM 1 Pin 6
7–8 Routes DSR signal to COM 1 Pin 6