BK Precision 8500 User Manual

Byte
offset
Meaning
5 Upper low byte of maximum current.
6 Upper high byte of maximum current.
7-24 Reserved
0x26 Set the maximum power allowed
Byte
offset
Meaning
3 Lower low byte of maximum power. 1 represents 1 mW.
4 Lower high byte of maximum power.
5 Upper low byte of maximum power.
6 Upper high byte of maximum power.
7-24 Reserved
Example: Suppose you want to set the maximum power to 213.45W. Since 1 represents 1mW,
213.45W translates to 213,450 in decimal. With 4 bytes in Hex, that would be 0x000341CA. Since
the bytes are ordered in little-endian format, 0xCA would be the 3
rd
byte, 0x41 the4
th
byte, 0x03 as 5
th
byte, and 0x00 as the 6
th
byte.
0x27 Read the maximum power allowed
Byte
offset
Meaning
3 Lower low byte of maximum power. 1 represents 1 mW.
4 Lower high byte of maximum power.
5 Upper low byte of maximum power.
6 Upper high byte of maximum power.
7-24 Reserved
0x28 Set CC, CV, CW, or CR mode
Byte
offset
Meaning
3 Mode:
0 is CC
1 is CV
2 is CW
3 is CR
4-24 Reserved
0x29 Read the mode being used (CC, CV, CW, or CR)
8500 DC Load Series Version: February 4, 2009 Page 54 of 76

BK Precision 8500 Specifications

General

Maximum Power	150 W
Current Range	0-30 A
Load Modes	CC, CV, CR, CP
Input Voltage	100-240 VAC, 50/60 Hz
Voltage Resolution	1 mV
Current Resolution	1 mA
Ripple and Noise (CV)	≤ 10 mVrms
Operating Temperature	0°C to 40°C
Storage Temperature	-10°C to 70°C
Interface	RS232
Display	VFD
Voltage Accuracy	0.05% + 5 mV
Current Accuracy	0.1% + 10 mA
Ripple and Noise (CC)	10 mA rms