Wavelength Electronics LFI-3751, Руководство пользователя

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When writing the [MOD Gain Confi guration] command, Character
7 (+ or -) confi gures the instrument to manual or automatic mode. A
‘+’ puts the Analog Input Gain under manual control. A ‘-’ lets the
instrument automatically change the gains. When Character 7 is ‘-’,
Characters 6 through 0 are ignored when writing. When the gain is
controlled automatically, the transfer function changes with sensor
and bias.
•
To read the MOD Gain Confi guration, the Command Type changes from
a WRITE (2) to a READ (1):
Read
!000.00023
(Reads [MOD Gain Confi guration] )
104
Chapter 4 - Remote Interface Reference
Setting Gain for Analog Input Signal (Rear Panel BNC Connector)
Setting Gain for Analog Input Signal (Rear Panel
BNC Connector)
•
The instrument automatically sets the gain of the Analog Input Connector
to match your sensor and bias current confi guration. You can manually
control the gain through the
[MOD Gain Configuration] command.
For Analog Input Gain 3, if you put in 1 Volt at the BNC, the setpoint
changes 0.01 Volts.
Write
!000.10021
(Sets Analog Input Gain to manual, 100 : 1)
•
The following table details the structure of the characters in the data fi eld.
Char 7 = Sign Char [+ = manual, - = automatic]
Char 6 = Not Used
Char 5 = Not Used
Char 4 = Not Used
Char 3 = Decimal Point
Char 2 = Analog Input Gain 3 (100 : 1) [0 = OFF, 1 = ON]
Char 1 = Analog Input Gain 2 (10 : 1) [0 = OFF, 1 = ON]
Char 0 = Analog Input Gain 1 (1 : 1) [0 = OFF, 1 = ON]
Thermistors & RTDs (10
µ
A or 100
µ
A)
Thermistors & RTDs (1 mA or 10 mA)
LM335/35, AD590
10 k
Ω
/ V
100
Ω
/ V
10°C / V
Analog Input Transfer Functions
RS-232
Commands Discussed:
[MOD Gain Confi guration]