Filter
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7.3.3.1 Setting the Filter
The filter helps to reduce variations in the measurements. The filter can be set
remotely using the command:
FI=<value><EOS> sets the filter time constant
FI=0<EOS> disables the filter
The value is the filter time constant in seconds. It must be between 0 and 60 in
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clusive. A value of 0 disables the filter.
7.3.3.2 Setting the Probe Current
The probe excitation current can be set remotely using the commands:
CU=1<EOS> sets the current to 1 mA
CU=.5<EOS> sets the current to 0.5 mA
7.3.3.3 Setting the Power Saver
Activating the power saver can conserve power. The power saver causes the
display to blank if no front panel buttons are pressed for a given number of
minutes. The power saver can be set using the commands:
PS=<value><EOS> sets the power saver time in minutes
PS=0<EOS> or PS=OF<EOS> disables the power saver
The value is the power saver time-out period in minutes. It must be between 0
and 60 inclusive. It is automatically rounded to a multiple of five minutes. A
value of 0 or OFF disables the power saver.
7.3.4 Communication Commands
The following commands relate to external communications.
7.3.4.1 Setting the Duplex Mode
When the RS-232 duplex mode is set to FULL all commands received by the
1502A from the RS-232 port are echoed back. Setting the mode to HALF dis
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ables the echo. The duplex mode can be set remotely using the commands:
DU=F<EOS> sets duplex to full
DU=H<EOS> sets duplex to half
7.3.4.2 Setting the Linefeed Option
When the RS-232 linefeed option is enabled any data transmitted from the
RS-232 port is terminated with a carriage return and a linefeed. Disabling the
linefeed sets the termination to carriage return only. The linefeed option can be
set remotely using the commands:
LF=ON<EOS> enables linefeed
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7 Digital Communications Interface
Remote Commands