Ametek 7230 Instruction Manual page 141

in the range 0 to 5.000 V
In fixed point mode, n is in microvolts rms and in floating point mode n is in volts
rms
AUTOMATIC [n] AC Gain automatic control
n Status
0 AC Gain is under manual control, either using the Main Controls panel or the
ACGAIN command
1 Automatic AC Gain control is activated, with the gain being adjusted according
to the full-scale sensitivity setting
AXO Auto-Offset
The X and Y channel output offsets are turned on and set to levels giving zero X and
Y channel outputs. Any changes in the input signal then appear as changes about
zero in the outputs.
BYTE [n] Digital port output control
The value of n, in the range 0 to 255, determines the bits to be output on those lines
of the rear panel digital port that are configured as outputs. Hence, for example, if
PORTDIR = 0 and BYTE = 0, all outputs are low, and when BYTE = 255, all are
high.
C1 n [n ] Equation Constant C1
1 2
The value of n sets the value of constant C1 for equation #1 (n
2
(n = 2) in the range -30,000 to +30,000
1
C2 n [n ] Equation Constant C2
1 2
The value of n sets the value of constant C2 for equation #1 (n
2
(n = 2) in the range -30,000 to +30,000
1
CBD [n] Curve buffer define for Standard Mode Buffer
Defines which data outputs are stored in the standard curve mode curve buffer when
subsequent TD (take data), TDT (take data triggered) or TDC (take data
continuously) commands are issued. Up to 17 (or 22 in dual reference and dual
harmonic modes) curves, or outputs, may be acquired, as specified by the CBD
parameter.
The CBD parameter is an integer between 1 and 131,071, being the decimal
equivalent of a 17-bit binary word. In either of the dual reference modes, it is an
integer between 1 and 4,194,303, being the decimal equivalent of a 22-bit binary
number. When a given bit is asserted, the corresponding output is selected for
storage. When a bit is negated, the output is not stored. The bit function and range
for each output are shown in the table below:
Bit Decimal value
0* 1
1* 2
2* 4
3* 8
4 16
5* 32
Appendix E, ALPHABETICAL LISTING OF COMMANDS
Output and range
X Output (±10000 FS)
Y Output (±10000 FS)
Magnitude Output (0 to +10000 FS)
Phase (±18000 = ±180°)
Sensitivity setting (1 to 27) + IMODE (0, 1, 2, 3 =
0, 32, 64, 128)
Noise (0 to +10000 FS)
= 1) or equation #2
1
= 1) or equation #2
1
E-3