Tape Modeset for 3480 XF

[George Haddad]

Maybe I'm missing something obvious, but I'm trying to write to a 3480 
cart  using TAPE MODESET (XF. The TAPE QUERY command confirms that the 
drive is capable of writing mode XF. But whatever I do, the data is 
apparently being written as 38k bpi, according to both the UofK TAPEMAP 
and Rich Greenberg's TAPINFO Modules.

I've tried issuing TAPE MODESET (XF, writing a VOL1 hdr with the (XF 
option, issuing a MODESET then doing a TAPE DUMP (XF w/o a label,  but 
in each case  the utils report that my density is 38k, not XF.

The carts I'm using are Imation Royal Guard  210MB. Are these not 
capable of the higher density? I thought this was a function of the 
drives, not the media.

What am I missing here?