Front Panel Set-Up - Eaton MGR10 Serie Manuel D'utilisation

command line buffer is read and validated. This is to prevent the PC sending further characters
whilst a command is being validated. Following validation, RTS is re-asserted to permit the next
command to be transmitted by the PC.
CTS is an input to the microhmmeter and controls the transmission of characters. If the PC
asserts CTS (low) then the microhmmeter will transmit the next character from the output buffer
(if one is waiting). If the PC negates CTS (high) then the microhmmeter will not transmit the
character, but will wait until CTS is re-asserted. TXD will remain in the mark (low) condition
whilst CTS is negated. Note that changing CTS during transmission of a character will not
disrupt the transmission of that character.
If a 3-wire (TXD, RXD, GND) connection is to be used, connect RTS to CTS at the
microhmmeter end. But take care; sending characters too quickly to the microhmmeter could
cause its receiver buffer (4 characters) to overflow and subsequent characters may be lost.
Always use a time delay between transmitted characters, or better still, use the full 5-wire
connection for reliable hardware handshaking of each character.
It is recommended that Sefelec cable assembly (Pt. No. 100031) be used for connecting the
microhmmeter to a PC. This has the 5-wire connection and will maintain EMC integrity.

6.2.1.2 Front Panel Set-up

Press "MENU" on the front panel and select "Rem I/F". On the next menu, select "RS-232". A
further menu allows selection of Talk Only mode and Baud Rate.
If no RS-232 card is fitted the warning message "** OPTION NOT AVAILABLE **" is
displayed.
Talk Only Mode
This mode is useful for sending results directly to a printer without the need for a PC.
Select "ON" to set the Talk Only mode. In this mode, the interface will ignore all incoming
interface commands, and the instrument will remain in LOCAL control mode. The result of each
measurement is sent to the interface output with the resolution as per the main display. If the
Temperature Compensation is selected, then the compensated resistance will be sent. See section
4.1 for output data format.
Baud Rate
On selecting Baud Rate, the current setting is displayed. This defaults to 9600 following a
RESET operation and is the usual setting on shipment. If this is acceptable press "OK".
MGR10 A/B/C Indice : J (version 7.0 du logiciel) 53