Version history file GPIB interface card IF-G1

Legend:
(-) Feature or bug removed
(+) Feature added
(*) Feature changed

v3.07
- Removed a bug where the device would not be recognized on the bus amongst other devices

v3.08
- Corrected the GPIB address setting where it wasn't possible to set addresses >16 for our units

v3.09
- Problem solved, where the command SOUR:VOLT:PROT was not accepted by PSI 8000

v3.10
- SRQ (Service Request): Bug removed which caused the interface to interrupt data transmission and corrupting transmitted data when generating a SRQ
* Changed behavior on queries where no response is available. Now the query responds an empty string and generates a GPIB error, rather than a read timeout.
- Removed bug which occasionally caused the interface to send a response twice in one string.

v3.11
- Removed "ERR" in front of response string to query SYST:ERR:ALL? to be compatible to SCPI standard. Errors are now returned as expected, like '0,"No error"'.

v3.12
- Deactivated service request functionality to make the GPIB controller (NAT7210) not interfere SRQ signal anymore. 
  Note: the software now doesn't match the register model in the documentation anymore. No service request means you have to poll all registers by software. 
  
v3.13
- Removed a bug where the GPIB interface card would re-init itself with a different address (when using a GPIB address >15 on the device) after sending command *RST

v3.14
- Removed a bug related to the three time commands (EL series only) under SOURCE:PULSE:WIDTH