BK Precision 8500 User Manual

Most significant two bytes, most significant byte Higher high byte
As an example, for the integer 0x23A749F5, we'd have
1st byte 0xF5 Lower low byte
2nd byte 0x49 Lower high byte
3rd byte 0xA7 Higher low byte
4th byte 0x23 Higher high byte
0x12 Indicates a return packet for a command sent to the DC Load
Byte
offset
Meaning
3 Status byte (i.e., status of last command sent to DC Load).
4-24 Reserved
Below is a table of all possible status byte values and their corresponding indication.
0x90 Checksum incorrect
0xA0 Parameter incorrect
0xB0 Unrecognized command
0xC0 Invalid command
0x80 Command was successful
0x20 Set the DC Load to remote operation
Byte
offset
Meaning
3 0 means front panel operation.
1 means remote operation.
4-24 Reserved
0x21 Turn the load ON or OFF
Byte
offset
Meaning
3 0 is OFF.
1 is ON.
4-24 Reserved
0x22 Set the maximum voltage allowed
Byte
offset
Meaning
3 Lower low byte of maximum voltage. 1 represents 1 mV.
4 Lower high byte of maximum voltage.
8500 DC Load Series Version: February 4, 2009 Page 52 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