SATEC PM175 Manual - Manual (Page 75)

‎Chapter 4 PAS Application Software General Meter Setup
Series PM175 Powermeters 75
Scaling Analog Outputs for 0-2 mA and ±2 mA
The output scales for 0-1 mA and ±1 mA analog outputs are
programmed for 0 mA and +1 mA regardless of the desired
output current range. To use the entire output range of 2 mA or
±2 mA, set the analog output scales in your device as follows:
0-2 mA: set the 1 mA scale to 1/2 of the required full scale
output for uni-directional parameters, and set the 0 mA
scale to the negative full scale and the 1 mA scale to zero
for bi-directional parameters.
±2 mA: set the 1 mA scale to 1/2 of the required full-scale
output for both uni-directional and bi-directional parameters.
For example, to provide the 0 to 2 mA output current range for
volts measured by the meter in the range of 0 to 120V, set the
1 mA scale to 60V; then the 120V reading will be scaled to 2
mA.
Programming the Analog Expander
Your meter can support up to two analog expanders that are
connected through a serial RS-422 interface to the meter port
COM2. Each expander has its own address 0 or 1 on the
serial interface and provides 8 analog channels with options
for 0-1mA, ±1mA, 0-20mA or 4-20mA output currents.
To configure the Analog Expander outputs in your device,
select General Setup from the Meter Setup menu, and then
click on the Analog Expander tab.
Analog output channels are enumerated in the following
manner: channels 1 through 8 are associated with the analog
expander with address 0, while channels 9 through 16 are
associated with the analog expander with address 1.
The available analog expander outputs options are described
in the following table.