Table of Contents
Advertisement
n
Signal (DAC2)
2
5
Equation 2
6
User DAC2
7
Ext ADC1 monitor
8
Phase2 : +9 V = +180°, -9 V = -180° (dual mode only)
n
Signal (DAC3)
2
0
Magnitude % (2.5 V FS)
1
Noise % (2.5 V FS)
2
Ratio: (10 × X%/ADC 1)
3
Log Ratio: log
4
Equation 1
5
Equation 2
6
User DAC3
7
Input to second demodulator (digital signal monitor 2)
8
X2 % (2.5 V FS) (dual mode only)
n
Signal (DAC3)
2
0
Phase: +9 V = +180°, -9 V = -180°
1
Noise % (2.5 V FS)
2
Ratio: (10 × X%/ADC 1)
3
Log Ratio: log
4
Equation 1
5
Equation 2
6
User DAC4
7
Synchronous oscillator
8
Y2 % (2.5 V FS) (dual mode only)
n
is compulsory and is 1 for DAC1, 2 for DAC2, 3 for DAC3, or 4 for DAC4
1
NOTE: n
= 1 is only permitted if the noise measurement mode is on
2
(NOISEMODE 1) or if the present settings of output filter slope and time constant
are within the permitted range and the synchronous time constant control is off.
DAC[.] n
[n
]
Set user DAC output voltage controls
1
2
The first parameter n
or 4.
The value of n
specifies the voltage to be output.
2
In fixed point mode it is an integer in the range -10000 to +10000, corresponding to
voltages from -10.000 V to +10.000 V, and in floating point mode it is in volts.
6.7.08 Digital I/O
PORTDIR [n]
Digital port direction control
The value of n determines which of the eight lines on the digital port are configured
as inputs and which as outputs. The parameter n is a decimal number whose bit-wise
interpretation defines whether the corresponding line is an input or output. The line
is an input if the corresponding bit is a "1". For example:
(10 X%/ADC1)
10
(10 X%/ADC1)
10
, which specifies the DAC, is compulsory and is either 1, 2, 3
1
Chapter 6, COMPUTER OPERATION
6-25
Advertisement
Table of Contents
