Rohde & Schwarz NGMO1, Руководство по эксплуатации

Страница: 39 / 84

Power Supply NGMO Operation
4-18 4.00 / 07-2004
A/B35: Serial count of
stopbits [1] 2
This menu item is used to select “Serial count of stopbits”
for data transmission. When set to 1, only one stopbit is
transmitted before the start of the next data byte. When set
to 2, two stopbits are transmitted before the next data byte
- this means synchronisation is better but there are fewer
transfers per second. This setting is independent of the
setting made with menu item 29 (recall setting when power
on).
A/B36: Serial Handshake
[none] HW xon/xoff
This menu item lets you set the serial handshake mode.
• none : NGMO2 does not use handshaking for serial
communication. This mode assumes that both ends are
always ready for data transfers.
• HW : NGMO2 uses the serial handshake lines RTS and
CTS for handshaking. If RTS is low, (not active) no data
must be sent to NGMO2. If CTS is low, no data is send
from NGMO2.
• Xon/XOff : NGMO2 uses a software handshake for serial
communication. The Xoff control character suspends serial
communication; XON continues serial communication.
A/B37: Serial Receive
Delimiter: [CR] LF
The setting of “Serial Receive Delimiter” decides which
control character is used for delimiting a command that is
sent to the NGMO2 using the serial interface. If CR is set,
the NGMO2 waits for a carriage return (Control M) as the
end of command character. If LF is set, NGMO2 waits for a
line feed (Control J). If LF is set, a CR may precede the
delimiter LF. This setting is independent of the setting
made with menu item 29 (recall setting when power on).