Instructions

2
7.17 Utilities Menu .................................................................................................................... 26
8. Analogue Remote Control ........................................................................... 27
8.1 Remote Voltage Control ................................................................................................... 27
8.2 Remote Level Select ........................................................................................................ 27
9. Application Notes ........................................................................................ 28
9.1 Sources ............................................................................................................................ 28
9.2 Stability of Source and Load Combinations ...................................................................... 29
9.3 Dynamic Behaviour in Transient Operation ...................................................................... 29
9.4 Start-up transients ............................................................................................................ 30
9.5 Characteristics of each Operating Mode .......................................................................... 30
9.6 Multiple Unit Operation ..................................................................................................... 32
10. Remote Interface Configuration .................................................................. 33
10.1 GPIB Interface .................................................................................................................. 33
10.2 RS232 Interface ............................................................................................................... 33
10.3 USB Interface and Device Driver Installation .................................................................... 34
10.4 LAN Interface ................................................................................................................... 34
10.5 Interface Locking .............................................................................................................. 36
11. Status Reporting .......................................................................................... 37
11.1 Input State and Input Trip Registers (ISR & ISE and ITR & ITE). ..................................... 37
11.2 Standard Event Status Registers (ESR and ESE) ............................................................ 38
11.3 Execution Error Register (EER) ........................................................................................ 39
11.4 Status Byte Register (STB) and GPIB Service Request Enable Register (SRE) .............. 39
11.5 GPIB Parallel Poll (PRE) .................................................................................................. 40
11.6 Query Error Register - GPIB IEEE Std. 488.2 Error Handling ........................................... 40
11.7 Power on Settings ............................................................................................................ 40
11.8 LDH400P Status Model .................................................................................................... 41
11.9 Register Summary ............................................................................................................ 41
12. Remote Commands ...................................................................................... 42
12.1 Remote and Local Operation ............................................................................................ 42
12.2 Remote Command Handling ............................................................................................ 42
12.3 Remote Command Formats ............................................................................................. 42
12.4 Command Timing ............................................................................................................. 43
12.5 Response Formats ........................................................................................................... 43
12.6 Command List .................................................................................................................. 43
13. Maintenance ................................................................................................ 47
13.1 Cleaning ........................................................................................................................... 47
13.2 Fuses ............................................................................................................................... 47
13.3 Calibration ........................................................................................................................ 47
13.4 Firmware Update .............................................................................................................. 47
13.5 Troubleshooting ................................................................................................................ 47