78M6612-DB/OMU-USB Maxim Integrated Products, 78M6612-DB/OMU-USB Datasheet - Page 40

• Manufacturer Part Number: 78M6612-DB/OMU-USB
• Description: KIT DEMO OUTLET MEASUREMENT OMU1
• Manufacturer: Maxim Integrated Products

Specifications of 78M6612-DB/OMU-USB

• Data Bus Width: 8 bit
• Interface Type: USB
• Tool Type: Demonstration Board
• Core Architecture: 8051
• Cpu Core: 80515
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6612_OMU_S2+2_URT_V1_14 Firmware Description Document
6 Configuration Parameter Entry
6.1
Table 8 lists the MPU parameters configurable by Firmware 6612_OMU_S2+2_URT_V1_14.
40
Parameter
Starting IA
Starting IB
VMAX A
IMAX A
IMAX B
Unused
MPU
MPU Parameters
Location
(hex)
A0
A1
A2
A3
A4
A5
mVrms
mArms
mArms
mArms
mArms
LSB
–
+471.500
+52.000
+52.000
Default
+0.007
+0.007
Table 8: MPU Parameters
–
corresponding to 250 mVpk at the
corresponding to 250 mVpk at the
corresponding to 250 mVpk at the
VA input of the 78M6612. It must
be set high enough to account for
Currents below this value will be
ignored. Also known as CREEP
Currents below this value will be
ignored. Also known as CREEP
overvoltages. Usually set to
Minimum current value to be
Minimum current value to be
measured on the IA input.
measured on the IB input.
IA input of the 78M6612.
IB input of the 78M6612.
471.500 V (471.500d).
External rms voltage
External rms current
External rms current
Comment
Unused
IA.
IB
maximum voltage for added
resolution. Set VMAX A to
added margin, in a system
using current shunts IMAX
added margin, in a system
using current shunts IMAX
start current on channel A
start current on channel B
Default setting is 7 mA. If
Default setting is 7 mA. If
For a 4 mΩ current shunt
For a 4 mΩ current shunt
system, the user can set
VMAX A to about 2x the
Amps for overhead. For
Amps for overhead. For
The default is set to 52
The default is set to 52
IMAX= (Vpk/√2)/R
IMAX= (Vpk/√2)/R
could be changed as
could be changed as
)A0=+270.000<CR>
If only using a 120V
IMAX=44.19 Amps
)A2=+44.190<CR>
IMAX=44.19 Amps
)A4=+44.190<CR>
desired is 10 mA:
)A1=+0.010<CR>
desired is 10 mA:
)A3=+0.010<CR>
To set IMAX A:
Example
follows:
follows:
UG_6612_017
270V:
Rev. 1.0
shunt
shunt