Chapter 6, COMPUTER OPERATION
6-18
according to the following table:
n Variable Range
0 X or X1 ±30000
1 Y or Y1 ±30000
2 MAG or MAG1 0 to 30000
3 PHA or PHA1 ±18000
4 ADC1 ±10000
5 ADC2 ±10000
6 ADC3 ±10000
7 ADC4 ±10000
8 C1 0 to 100000
9 C2 0 to 100000
10 0 zero
11 1 unity
12 FRQ 0 to 250000000 (i.e. reference frequency in mHz)*
13 OSC 0 to 250000000 (i.e. oscillator frequency in mHz)*
Dual modes only:-
14 X2 ±30000
15 Y2 ±30000
16 MAG2 0 to 30000
17 PHA2 ±18000
*Parameter n
5
is the only one that can be set to values of 12 or 13.
EQU n Output result of equation #1 or equation #2
The value returned is the output of the user equation #1 (n = 1) or equation #2 (n =
2), where the equations are defined using the Output equations control panel (see
section 5.3.27). The possible range is ±2,147,483,647 (signed 32-bit integer).
C1 n
1
[n
2
] Equation Constant C1
The value of n
2
sets the value of constant C1 for equation #1 (n
1
= 1) or equation #2
(n
1
= 2) in the range -30,000 to +30,000
C2 n
1
[n
2
] Equation Constant C2
The value of n
2
sets the value of constant C2 for equation #1 (n
1
= 1) or equation #2
(n
1
= 2) in the range -30,000 to +30,000
? Fast Data Transfer command
The ? command offers a method of reading a combination of instrument outputs
which are sampled at the same time, thereby ensuring that they are correlated.
The response to the ? command is the output(s), expressed in floating point mode,
specified by the present setting of the Curve Buffer Define (CBD) command (see
section 6.7.09) and separated by delimiter character(s) defined by the DD command.
Hence for example, if CBD is set to 3, the response to the ? command will be:
<X output, in floating point mode><delimiter>
<Y output, in floating point mode><terminator>
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