function gt_filtb, item, string=string, short=short, header=header, spaces=spaces
;
;
head_long = 'FiltB'
head_short = 'FB'
conv2str = ['???  ', 'Open ', 'Al.1 ', 'AlMg ', 'Be119', 'Al12 ', 'Mg3  ', '???  '] ;5 characters
conv2short = ['??', 'Op', 'A1', 'AM', 'Be', 'A2', 'Mg', '??']               ;2 characters
;
if (n_params(0) eq 0) then begin
    print, 'String Output for GET_FILTB'
    for i=1,6 do print, i, conv2str(i), conv2short(i), format='(i3, 2x, a6, 2x, a6)'
    return, ''
end
;
siz = size(item)
typ = siz( siz(0)+1 )
if (typ eq 8) then begin
    ;Check to see if an index was passed (which has the "periph" tag
    ;nested under "sxt", or a roadmap or observing log entry was
    ;passed
    tags = tag_names(item)
    if (tags(0) eq 'GEN') then out = item.sxt.periph $
            else out = item.periph
end else begin
    out = item
end
;
;---- If the item passed is byte type, then assume that it is a
;     raw telemetered value and the item's bits need to be extracted
siz = size(out)
typ = siz( siz(0)+1 )
if (typ eq 1) then out = mask(out, 3, 3)
out = out>0<7   ;check the range
;
out = gt_conv2str(out, conv2str, conv2short, header_array, header=header, $
        string=string, short=short, spaces=spaces)
;
return, out
end