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Appendix B—Serial Communication Technical Details
Tau 640 User’s Manual
B-8
June 2011
TAU-0640-00-10, version 110
0x22
ISOTHERM
Get
s
or
set
s
th
e is
ot
herm
mode (
o
n/
o
ff
). I
f is
ot
h
e
rm
o
p
ti
on
is
n
o
t
ena
b
led,
co
mma
nd re
tu
rn
s an
err
o
r.
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
0x0
0
00
= D
isa
bled
0x0
0
01
= En
abled
0x23
ISOT
HE
RM_THRESHOLD
S
Gets
or
se
ts t
h
e
is
o
the
rm t
h
re
sh
olds
i
n
p
e
rc
ent
o
f f
u
ll-
sca
le-
ra
ng
e
(e
.g.
97
dec
ima
l
= 97
% FSR
) o
r in
deg
C. Bit 1
5
of
th
e lower
th
resh
old is
u
s
ed to s
p
ec
ify u
n
its
(1 =
deg C
, 0
= %).
Get
C
m
d: 0
N
one
Set Cmd:
4
&
Re
s
p
: 4
Byt
e
s 0
-1
:
lo
we
r th
res
h
o
ld
Byt
e
s 2
-3
:
u
p
p
e
r th
re
sh
old
0x25
TEST_
P
A
T
TE
RN
Gets
a
n
d
s
e
ts
the
t
e
st
pat
ter
n mo
de. Befor
e
tu
rn
ing
o
n
t
h
e te
st
pat
ter
n, tu
rn
off t
h
e co
rr
ec
tio
n
ter
m
s a
n
d s
e
t th
e flat
field
a
n
d
the
g
a
in
mode t
o
manual.
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
0x0
0
00
= t
e
s
t pat
ter
n o
ff
0x0
0
01
= as
c
e
n
d
ing r
a
mp
0x0
0
03
= big ver
tica
l
0x0
0
04
= h
o
ri
zo
nt
al s
h
ade
0x0
0
06
= c
o
lor
bar
s
0x0
0
08
= r
a
mp with
s
teps
0x
26
VI
DE
O_
C
O
L
OR_
M
O
DE
Get
s
or
set
s
video
Colo
r mo
de
(c
olor
or
mon
o
c
h
rom
e
)
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
0x0
0
00
= mon
c
hr
ome
0x0
0
01
= c
o
lor
0x
2
A
GE
T
_
S
P
OT
_
M
ET
E
R
R
e
tu
rn
s t
h
e va
lue
o
f th
e spo
t met
e
r i
n
de
gre
e
s C
e
lsi
u
s
(r
eg
ar
dl
es
s
of s
p
ot
meter
mode).
If
th
e sp
ot
met
e
r o
p
ti
on
is
no
t
en
abled, ret
u
rn
s
an
er
ror
.
Get
C
m
d: 0
N
one
R
e
sp
: 2
S
po
t temp
era
tu
re
v
a
lu
e
0x2B
SPOT
_
D
ISPLA
Y
Gets
o
r s
e
ts
the
s
p
o
t mete
r disp
lay mo
de. If th
e spo
t met
e
r
opt
ion
i
s
no
t en
abl
e
d,
r
e
tu
rn
s
a
n
er
ro
r.
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
0x0
0
00
= displa
y
of
f
0x0
0
01
= n
u
meric
o
n
ly
0x0
0
02
= t
h
er
mometer
on
ly
0x0003 = numer
ic & th
ermomete
r
0x3C
FF
C_W
A
RN_TIME
T
im
e
t
o
d
is
p
la
y t
h
e
F
F
C
i
m
m
in
e
n
t i
c
o
n
i
n
n
u
m
b
e
r o
f f
ra
m
e
s
b
e
fo
re
th
e
flat field ha
ppen
s
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
Bytes
0 to
1: T
ime in
fr
ames
(Da
ta
R
a
nge is
0
to
60
0 fr
ames
)
0x3E
AGC_
FIL
T
ER
Gets
a
n
d
s
e
ts
the
A
G
C IT
T filt
er va
lu
e
Get
C
m
d: 0
N
one
Set Cmd:
2
&
Re
s
p
: 2
Bytes
0 to
1: I
T
T
filter valu
e
0 =
immed
iate
1
-2
5
5 =
N
u
mer
a
to
r (D
en
omi
n
at
or
=
25
6)
Ta
ble
B
-4: RS232 Function Cod
es
Fun
c
ti
on
Code (hex)
Command
Descr
ip
ti
o
n
By
te
C
o
u
n
t
Ar
g
u
me
nt
(i.e
, D
a
ta Byte
s) (he
x
)
Note
s