Rear Panel - Omega Engineering OMB-CHARTSCAN 1400 User Manual

Rear Panel

ChartScan's rear panel contains several items, including a set of LEDs for status indication. The LED indicators are
described in the following table. Other rear panel items are listed in a separate table following the illustration.
LED Indicators, Chassis
ALARM
TRIGGER
SCAN
SEND
RECEIVE
ERROR
POWER
Item
Power
Connector
Power Switch
Chassis Ground
Calibration
Enable/Disable
Trigger In
TTL Output
Alarms & Digital I/O
(DB50) Connector
RS-232/422 (DB9)
Connector
DIP Switch
Interface Card Slot
LED Indicators
3-2
ON when an alarm has occurred. The indicator remains ON until the alarm condition clears.
OFF when no alarm condition exists.
Flashes when ARMed (waiting for a trigger), is ON continuous when triggered; is OFF when
data collection is finished. Trigger is also turned OFF by IEEE DCL or SDC.
ON when ChartScan is storing a channel scan in its internal buffer.
ON when transmitting data to the serial interface (for RS-232 operation only).
ON when receiving data from the controlling computer (for RS-232 operation only).
ON when an error has occurred, OFF when no error condition exists. See the Error Query (E?)
command for more information.
ON when power is applied to ChartScan and the power switch on the back panel is in the ON
position (depressed). OFF if power is not present.
ChartScan Rear Panel
Description
Provides a means for connecting ChartScan to one of two voltage supplies:
105 - 125V, or 210 - 250V. The connected power supply must agree with that selected by
ChartScan's internal slide switch (described later in this chapter).
Turns power ON or OFF.
A single point grounding node for, but not limited to, thermocouple shield termination.
Pushbutton used to enable/disable the hardware protected portion of NVRAM during ChartScan
main unit calibration. Note that this pushbutton does not exist on early production units.
Early production units use micro-switch #9 (on the DIP switch) instead of a calibration
pushbutton.
Refer to Chapter 6 for detailed information regarding calibration.
BNC Trigger input for initiating and/or stopping acquisition with TTL input signal
BNC TTL Scan output signal occurs for each channel scan; used for synchronizing other
equipment with ChartScan acquisition.
DB50 connector offers easy access to Alarms and Digital I/O (32 digital outputs and 8 digital
inputs)
Serial port for operation at remote distances from controlling computer. Supports various baud
rates using RTS/CTS or XON/XOFF handshaking. When ChartScan is configured for
RS-232 serial communications, this port can be used to connect ChartScan to a Net232
ethernet/RS-232 converter for ethernet operations. Refer to the Net232 User's Guide for
ethernet-related information.
Used for selecting RS-232 or RS-422 and respective communication parameters, i.e.,
handshaking, parity and Baud Rate. Also allows for section of IEEE 488 and address
settings. An IEEE 488 interface card is required for IEEE 488 operations.
For installing the optional IEEE 488 interface card. Note that RS-232 serial interface is the
default and is possible with or without an interface card.
See previous table, LED Indicators, Chassis.
ChartScan User's Manual