Serial communications (option), Performance, Reference conditions – West Control Solutions N8080 (for 2xxx) User Manual
Page 38: Performance under reference conditions
Accuracy:
0.25% (mA @ 250W, V @ 2kW); degrades
linearly to 0.5%.
Resolution:
8 bits in 250mS (10 bits in 1 second
typically).
Update Rate:
4/second approximately.
Load Impedance:
mA ranges - 500
Ω
max.
V ranges - 500
Ω
min.
A.8
SERIAL COMMUNICATIONS (OPTION)
Type:
Serial asynchronous, UART to UART.
Data Format:
Open ASCII; One start bit, even parity,
seven data bits, one stop bit.
Physical Layer:
RS485.
Maximum Number of
Zones:
99.
Baud Rate:
Selectable from 1200, 2400, 4800 and
9600 Baud.
A.9
PERFORMANCE
Reference Conditions
Ambient Temperature:
20
°
C
±
2
°
C
Relative Humidity:
60 - 70%
Supply Voltage:
90 - 264V AC 50Hz)
Performance Under Reference Conditions
Common Mode Rejection:
>120dB at 50/60Hz giving negligible effect
at up to 264V 50/60Hz.
Series Mode Rejection:
>500% of span (at 50/60Hz) causes
negligible effect.
DC Input
Measurement Accuracy:
Typical
±
0.01% of span
±
1LSD;
±
0.05% of
span
±
1LSD max.
A-3
Volume II
PM091-A
59136