![background image](http://html2.mh-extra.com/html/racal-instruments/1257/1257_manual_3121580084.webp)
1257 User Manual
EADS North America Defense
Computer Interfaces 4-23
Test and Services, Inc.
©
2001
To set these parameters, proceed as follows:
1. Press the top key. Rotate the knob until the top line reads:
>-----SETTINGS-----<
2. Select line 2 (next to top line) by pressing the second key. This
selects line 2 so that you may select the type of setting to work
with:
-----SETTINGS-----
> Type: Display <
Option: Format
Status: Decimal
3. Rotate the knob until line 2 reads as shown below (lines 3 and
4 may differ):
-----SETTINGS-----
> Type: RS-232 <
Option: Data Bits
Status: 8
4. Press the third key to select line 3 of the display. Rotate the
knob until line 3 indicates the desired parameter as shown
below (in this example, the parity option is chosen):
-----SETTINGS-----
Type: RS-232
> Option: Parity <
Status: Even
5. If line 4 of the display already indicates the desired choice for
the parameter, then no action is necessary. Otherwise, press
the fourth key. Rotate the knob until line 4 displays the desired
choice (in this example, “None” is the desired choice):
-----SETTINGS-----
Type: RS-232
Option: Parity
<Update?: None
Then press the fourth key to confirm the update. Pressing any
other button cancels the change.
Set the data terminal or computer to match the settings you select
for the 1257.