Reprogramming the DBBC

Sometimes the DBBC needs reprogramming because channels have been dropped or spectra look strange. To do this, preferable in a gap between scans, follow the following steps:

Open a VNC connection to the DBBC. At Hobart, connect to 131.217.63.248:0
```
Applications --> Auscope Hobar --> VNC -->dbbchb 
```
You should see a window named DBBC2 Control DDC v104_2.exe. Close it and then restart it from the desktop. When prompted to reconfigure press “y”, it takes about 2 minutes.
It is then necessary to make sure the DBBC is synchronised with the station PPS. After some time, in eremotectrl type:
```
dbbc=pps_sync
```
You should then see a row of LEDs on the DBBC flash in sync, once a second.
Lastly, the Mark5 time needs synchronising. To do this, open a terminal on pcfshb and type
```
fmset
```
In the interface, type S followed by y, then press the ESC key.
In the oprin window on pcfshb, type
```
mk5=dot?
```
and check that you see syncerr_eq_0 and FHG_on (or FHG_off). If you see something like syncerr_gt_3 then fmset may need to be run again.
Also check that the maser-GPS and delay through the DBBC are the same (to within a microsec) with the maserdelay and clkoff commands which read the Agilent counters.
If one or both counters are not responding to these commands, you will see an error message like this
```
ERROR sp   -4 GPIB Device time-out on response c2
```
To fix this, try re-setting the counters. In the oprin window, type
```
counter
```
and try the clkoff and maserdelay commands again.