8200-M129-O1 Rev D 205 Installation & Technical 15
INSTALLATION, CONT.
Main PCB Jumpers
J2 – REMOTE INPUT SRC (SOURCE)
The Remote Input SRC jumper J2, when connected, allows the 205 indicator to supply
(source) 12-24VDC to a solid-state relay or other load of 200 ohms or greater. The positive
connection from the relays must be connected to the remote input connector pins and the
negative wire from the relays to the GND/SHLD pin.
J3 – AUTO-ON JUMPER
The AUTO-ON jumper J3, when connected, will cause the indicator to power on automatically
whenever power is applied to the power input connector. If power is lost momentarily and then
reapplied, the indicator will turn on without pressing the ON/OFF key.
J4 AND J5 – RS-232/USB PORT
These jumpers control whether COM3 is RS-232 and uses Serial I/O P14 (pins 7, 8, & 9) or
USB and uses the USB-B header, P4 or USB-B port, P6.
J6 (+SEN) AND J9 (-SEN) – SENSE JUMPERS
If the sense leads are NOT used, you must install plug-in jumpers at J6 and J9 adjacent to the
terminal block. These jumpers attach the sense leads to the excitation leads. If sense leads
ARE used (as in motor truck scales), these plug-in jumpers should be positioned on one plug-
in pin only or removed and stored for later use.
J8 – DLB (DEAD LOAD BOOST JUMPER)
For very low dead loads (less than 10% of the combined load cell capacity) connect the dead
load boost jumper J8 on the printed circuit board.
J10 – USB PWR
The USB PWR jumper J10 selects whether the USB power is provided by the USB Host
(set to BUS position) or by the 205 indicator (set to VCC position).
Re-Installing the Rear Panel
After all terminations have been made;
1. Remove the excess cable from the instrument enclosure and securely tighten each of
the cable gland connectors.
Do not over-tighten these connectors but make certain they are snug.
DO NOT USE TOOLS! Finger-tighten only!
2. Ensure any unused gland connectors are plugged and replace the rear panel.
3. Secure the rear panel with the 12 acorn nuts removed earlier.
4. Follow a diagonal pattern when tightening the acorn nuts.
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