Instruction manual

NOTE:

<SP> = Null or space character (20H)

<AARD> = Arbitrary ASCII Response Data

<NR.DATA> = Numeric Data

<EOS> = End of string character (OAH )

<Channel_list> = Channel Number operation.

The format for giving the channel list is

(@1) : Channel number 1

(@1,2) : Channel nos. 1 & 2.

(@1,2:4) : Channel numbers 1,2,3,4.

Brackets are compulsory.

1. Command : READ?<Channel_list>

Description : Read Output Voltage and Current Query.

Function : This command reads back the output voltage & current

of the unit in <AARD> format. The units for Voltage and

Current are VOLTS and AMPS respectively. If the speci-

fied CHANNEL(S) is in CV (Constant Voltage) mode of

operation, no special indication is given. But if it is in CC

(Constant Current) mode of operation then the word ‘CC‘

is put at the end of the response. The entire response is

terminated with <EOS> byte.

Response is in Arbitrary ASCII Response Data format.

<Channel_list> indicates for which all CHANNELS the

DATA has to be read. The responses of two channels

are separated by the RMUS (Response Message Unit

Separator), which is SEMICOLON (;).

The sequence of the Response for more than one chan-

nel is the same as the Sequence of the channel num-

bers specified in the <Channel_list>. If no such

Channel_list> is provided the READ? query will always

read from channel 1.

For example if the Query sent is

READ?(@2,1)

then the response can be as follows:

+14.99V 00.02A;+00.35V 01.99A CC<EOS>

which indicates that CHANNEL 1 is in CC mode.

2. Command : [SOURce:]VOLTage<SP><NR.DATA>

<Channel_list>

Description : Set the Output Voltage for that Channel(s).

Function : This command sets the Output Voltage of the Power Sup-

ply output with the <NR.DATA> given in the command in