SpectraVideo Camera User’s Manual
Supporting Software
36
between command lines only if the first character is left justified and is an
apostrophe ( ‘ ).
Imaging Module PROM pages are accessed by loading different ‘files.clk’ which
have a numeric first character rather than an alphabetic command character. The
PROM pages control the direction of CCD clocking and hence, are designed
specifically for selecting individual amplifiers unique to each SpectraVideo
system. PROM pages are also used to select the gain characteristics of the
correlated double sample analog signal chain on the analog board. High gain and
low gain for each of 4 outputs are generally programmed in the DSP PROM.
Consult the Data Sheet received with the SpectraVideo camera for choice of
PROM page numbers (0 through 7).
The PixLoad program converts the decimal value to a hexadecimal format used
by the DSP. See Section 11.1 on the SpectraVideo serial port interface for details
on the serial port command syntax.
12.2.2.
S
AMPLE
T
EXT
F
ILE
The following is a sample listing of the ‘file.clk’ contents with typical values:
port=2 ‘ MUST be on first line, left justified
‘pc serial port, 9600 baud, 1 start, 1 stop bit, no parity, 8 data bits, set internally.
‘ must be first line of text file.
‘
‘ Next is the commands,
‘ The first character is the prom page from which to boot, the numbers after the =
are
‘ don’t cares but necessary.
0=00 ‘ prom page for gain and amplifier selection
‘ next is pixels per line
a=1044 ‘ pixels per line = lead in central array 2
‘
b=1024 ‘ lines per frame = central array rows
c=0 ‘ serial pixels binned minus 1, pixels group size = c+1.
d=8 ‘ parallel states used per parallel shift, rows binned = d/8.
e=32 ‘ serial wait count, pixel period = (19+e*3)*100
η
s. (10mhz DSP
clocks)
f=150 ‘ parallel wait count, wait = f*100
η
s.
g=600 ‘ discing wait count, wait = g*pixel period.
h=200 ‘ after exposure wait count, h*h*pixel period.