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BK Precision 4070A User Manual Rev.2.2
42
6.6 Remote Control Commands
The diagram below gives the front panel keys and their associated ASCII codes. Sending these characters to the
4070A has the same effect as pressing the associated button on the front panel.
NOTE: To familiarize yourself with the remote operation of the 4070A, it is helpful to run a terminal program on
your PC and manually type the commands and watch the response. To get a help menu, press H. See section 6.3 for
details. Characters are case insensitive
Front Panel Programming
Position
Value
*
FSK
∅
M
SSB
Burst
AM
DTMF Gen
Power
Measure
Sweep
FM
DTMF Det
#
MHz
dBm
KHz
Vp-p
Sec
Hz
MV p-p
mS
Other
Clear
One Touch
Mode Selection
Field
Digit Field
Offset
SYNC
Out
SIG
Out
.çL
1
T
9
8
7
6
0
5
2
3
-
O
S
èR
ê
D
é
U
B
V
G
Q
Ø
×
C
X
Y
Z
M
4
N
P
Recall
Store
Trigger
Mode
Figure 6.6-1: Front panel keys to ASCII command mapping
NOTE: Turning the rotary knob clockwise has the same effect as pressing the é key multiple times. Turning the
rotary knob Counter-clockwise has the same effect as pressing the ê key multiple times. In addition to the above
ASCII command characters, extra commands are available for remote control operation.
They are:
A - Reset the unit to Sine wave mode
V - Report hardware and software versions
K1,0 - Enable, Disable front panel keys and knob
E1,0 - Enable, Disable LCD echo to terminal
F0-9 - Move cursor to field 0 to 9
? or H - Print help menu
^E - Returns ^C
Each of these "extra" remote control commands is discussed below:
A - Reset 4070A to Sine wave mode
This command resets the 4070A to the Sine wave mode and turns the cursor off. The output-offset voltage is set
to 0.0V. When writing control software for the 4070A, it is a good idea to issue this command first so that the
4070A is in a known state before further commands are issued.
NOTE: The frequency and level values are not reset. They are set to the values that existed the last time the unit
was in Sine wave mode. (Or the power-up default values if they hadn't been changed). The RS-232 baud rate
remains unchanged.