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CALIBRATION COMMANDS:
PPS-1322/1302A PPS-1326 PPS-1603/10710 PPS-2322 Type Input/Output
Command
VOFF * * * * R Input
VFS * * * * R Input
IOFF * * * * R Input
IFS * * * R Input
IHIFS * R Input
ILOFS * R Input
NOTE: 1. Types of data entry: I: Integer
R: Real
A: ASCII code
2. Types of input/output: INPUT: Input to the PPS
OUTPUT: Output to the PPS
3. The "CALCHNL" commands for the PPS-2322 are: 0 - disable calibration,
1-calibrate channel one, 2 - calibrate channel two, 3 - calibrate both channels.
4. *=> Command available to the model
5.4 STATUS REPORTING
All models of the PPS series include a status register for reporting the operating conditions of the power supply.
Each output channel has an 8 bit register which signifies a true condition as "1" and a false condition as "0". These
bit conditions stay true as long as the condition is true.
The status word received is in ASCII code format, it needs to be converted to binary code first. Each bit is assigned
a particular condition and one nibble is converted to one ASCII code. The single channel PPS send two ASCII
Bytes and two Terminator Bytes to the GPIB. The terminator bytes are "line feed" & "carriage return". The dual
channel PPS send four bytes of ASCII and two terminator bytes to the GPIB.
STATUS?
DEFINITION OF STATUS WORD:
NIBBLE 1 NIBBLE 2
Byte Value | Bit7 b6 b5 b4 | b3 b2 b1 b0
0 | 0 | 0 LO RNG CC1 | OCP OFF OUT1 OFF NO ERR
| 1 | HI RNG CV1 OV1 | OC1 OCP ON OUT1 ON ERR
1 | 0 | 0 CC2 | CH 1 OUT2 OFF
| 1 | TRACK CV2 OV2 | OC2 CH 2 OUT2 ON
NIBBLE 3 NIBBLE 4
NOTE: 1. Byte 0 is available for models PPS-1322/1302A, PPS-1326, PPS-1603/10710 and PPS-2322. However,
byte 1 is only applicable for PPS-2322.
2. The most significant bit of byte 0 or byte 1 is always 0.
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