Microchip Technology PG103001A RFID Programmer User Manual Owners Manual
Microchip Technology Inc RFID Programmer Owners Manual
Owners Manual
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| Date Submitted | 1999-02-04 00:00:00 |
| Date Available | 1999-03-24 00:00:00 |
| Creation Date | 1999-02-03 17:02:22 |
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| Document Lastmod | 1999-02-03 17:06:18 |
| Document Title | Owners Manual |
| Document Creator | Photoshop PDF Plug-in 1.0 |
_—_-
rcmbmp Technology Inc.
Mlcnocl-ltp
microID'M 125 kHz DESIGN GUIDE
Using the microIDTM Programmer
1.0 INTRODUCTION
The lollemrng is a descrlplion ol how to program
Mroroehrp'e MCRFZXX lemily ol HFID products. A
contactlesa programmer tPthzlooti, user rntertaee
eoltware (HFLAB"). and a host computer are needed
to program the MCRFZXX devices. The devioe can also
be programmed In a standard terminal mode (re.
o:\wtrroowe\termrnal.exe) rather than the FIFLAB. See
Figure 54 lor the programming sWuerlce.
The micron: programmer requrree an external power
supply (09 VDC, >7so MA}. The FIFLAB soltware runs
under Microsoit' (MS) wirroowa“ 95 environment only
The programmer communtcalee will’l a host computer
via an ns-aaz serral lnlerlace at 9600 baud. adata brie,
i stop on. and no parity.
5rnca the MCRFZXX is a One-Time-Progremrrrable
(OTP) devioe. only a blank (unlocked) devoe can be
programmed by lhe programmer Therelore, the pro-
gramme! lirsl checks ll‘la Slams OI lhe memory m the
devioe oelore inlliatlng programming. A blank devioe
oonterne an army el all ‘I e.
The device can be programmed with is bytes llzo bits)
or I2 bytes (96 hits) ol date length Once the
mutant enters its programming mode. it sets a lock
on at the same time. I! the programming is interrupted
lor any reason during the programming period. the pro-
gramming will be stopped, and the device may he tell
pantelly programmed. The devroe will still be locked
even though rthes not been programmed completely. In
this case. the programmerwrll return a la“ code to the
host oompoter.
Any device that has been programmed, either tutly or
panielly. will remain In a looked status. therelore, rt
eennet to be reprogrammed, ll programming has been
aooceaelully oompleted. me programmer will relum a
venlrcatton code to the host compulel.
in order to program the MCHFzXX device, ll rs
necessary to erlds a proper programming sgnet
level lo the oevroe. The device requires speelio peak-
topeak voltages lor pmgrammlng. Since the voltage
indooed in the lag coil varies depending on the con
parameters. the output signal lerel ol the programmer
must be calibrated to provide a proper programmlng
signal level at the tag eoit A detailed calibration
prooedure is described in Section 3.0.
FIGURE 14: RFLAB SOFTWARE RUNNING UNDER MS WINDOWS 95
z: |ir [a
e “W
to 1998 Mlorochto Technology Inc.
microIDTM 125 kHz Design tjume
2.0 PROGRAMMING SIGNAL
WAVEFORM
Figure 2-1 shows the wavolorm or the programming
signal. Once the programmer sends a power-up and
gap signal to the device. the devrce transmrls pack a
verification bltstream m FSK. The verification signal
represents the contents at the memnry in the device.
The blank devtce has all ‘l's in Its memory. A bit '1' ln
FSK is represented by a low signal level tor live cycles
and a high signal level tor an additional five cycles
lFlgure 24).
The device will respond with a honrnodulatod (no data)
signal ii the device has not recognized the power-up
stgnat. in this case. the power-up signal level should be
calibrated to piovtde a proper Signal level to the delllce.
The calibration procedure is explained in Section 3.0.
After the device rs voriliad as blank. the programmer
sends a programming signal to the dovtee. The pro-
gramming data is represented by an amplitude modu-
lation signal. Theretore, bit ‘t' and ‘u' are represented
by a low-power (level) signal and a high power ilsveti
signal. respectively. as shown tn Figure 2-1, Each data
bit rs represented oy 128 cycles ol the earner signal. Art
MCRFZOO configured lot 128 hits uses all bits in the
transter; an MCHFZOO configured tor as oils ignores
blls 33 through 64. although they are present in the pic»
grammrng sequence. Theretore, tor a tzs kHz carrier
srgnal, it takes 1.024 rns tor one data oil ii 23 cycles x
3 its/cycles] and 131.072 ms lot 128 data blts
itzs cycles/hit x s ps/cycle x tze bits).
A guard—hand ot At . to cycias tau psi should be kept
at each and ol a highpower (0) bit as shown in
Figure 24. Thrs is to prevent accidental programming
or disturbing oi adiacont oils tn the array.
The memory array is locked at the start ot the program-
ming cycle. Theretore, when the device leaves the pro-
gramming held. it looks the memory permanently.
regardless ol the programming status. The device
should not so interrupted during the programmrng
cycle.
The detrice transmits the programmed (data contents)
circuits oadr to the programmer tor vorilication. it the
verllicallpn bllsheam Is mrrsct, |hs programmer sends
a verrtrad srgnat (vi to the host computer; otherwise. rt
sends an error message (w, see Figure 54 l
The programming signal level must be wrthin a limit or
the programmrno voltage window tor successiul pro-
gramming. The callbrauort ol the signal level rs
explained rn section 3.0.
2.1 Wand-hm
5190815
The programming srgnal starts wllh a power-up signal
tor so - tad its, lottowed try a gap signal (0 watt) lot
50 ~ too its. The purpose or these signals rs to check
whether the demos is blank and establish a program
mrng mode rn the device. Once the device recognrzas
the power-up srghal. it transmits back the contents ot tts
memory. it the device transmits back With the blank
onstream tFSK wrth all is), it is ready to be pro-
grammed, it the device is not blank. the programmer
inlorms the host computer that it is nonprograrnrnable.
it the powenup srgnal level is out ot the programming
voltage range. me devrce Will transmit hack a
rvnrl~mpdulated Signal (no data) The nonmodulated
signal has no variation in the ampllhxle (constant
voltage signati. A varratils resistor, H5 in the microID
programmer. should be adjusted to provrde a proper
power-up signal level. A typical srgnat level is aoout
22: a VPP across the tag coil. This calibration
procedure is described in Section 3.0.
2.2 mammlnsiwfinfl
Once the device has been verttled blank rot program-
ming, the programmer sends a programming sequence
to the device. The programming date entered in the
RFLAB sollware is sent to the dance Via the
programmer. The programming signal wavelorms are
shown in Figure 24. One tort or data is represented oy
128 cycles ol the carrier signal. I! takes 131.072 ms to
complete one programming cycle tor the total ot tea
data bits. An MCHFZGO configured (or ‘28 blts users all
bits In the transter; an MCRF200 configured tor 96 bits
ignores hits 33 through 34, although they are present in
the programming sequence. Alter the programming
sequence. the device transmits back a verification
hitstream. The programmer repons to the host
computer the status or the programming.
The data is programmed only it the programming signal
level is wilhtn the limit in the programming voltage
requirement ol the device. it takes several
programlnlng/venly cycles to completely program each
bit ol the MCHFZDO. The micron) programmaruses ten
trot plind programNenly cycles oetoro checking the
tinat verily sequence tor correct programming. Faster
programmers can be designed by cheating each
program/verrly cycle; alter approximately 3 ~ 5 cycles.
the devroe wlII verity correctly Once a correct verily
sequence is received. One additional program CYClB
should be run to ensure proper programming margin.
to teeswwmrocnmbw W
osst lJQA-paae tta
I] law 11-—
GURE 2-1 CONIAC LESS PROGRAMMING WAVEFORM
Fl -
; wnh a mew») Slflnal
a gap Slgnal 10 van) m
hese sanats is m
m1 estabflsh a pmgram.
e the device recogmzes
5 back me comems oi as
us back wllh \ha Nank
E = g
,,,,,,,,,, e 2 g.
' e w r 5 _
A As reaay Io he pm 5 _ . g A 3 n 2 _e
blank, the D'Wrammev 4 3 E g % E i 2
us nonpmgrammaue. ‘ g g ' — E 3 é 57
our of me programmmq ‘ g -------- 3 E 5 g
M" Ivansmit back a h n. m 5, <5 i 8
a). The nonmodulaled ‘ s‘ - g g ' 3:
We amplitude (constanl ‘ T- E 3 §§m
lslor. R5 in me mmnn \ m §
at! m Brands a proper ‘ _ ' 7 7 1 a
ll smnal level is aboul 1 " a E
coil, This cal-brawn ‘
on 3,0. ;
m \ “é
nee blank by program- N g 5
mgrzmmmg sequence 5 —- u
|g dam enteved -n (he § %
the device via me ‘ 7, m s g
slgnal waveéorms are ¢ I 5, g 3 gt
dalalsrepreseniedby \ E a 3 , ..,
Makesva‘mzmm ‘ w x g 5 (3
is forlnelmal 01128 > g g g N
edlor123 bits uses all g i
monhgured (m as bus 8 g
Jghthey ale presennn : m 7.
“21 the programmmg ‘ Q g g
s hack a vemicahon ; g g :
‘apons to me has! a g. g
xmming, é é
sprogrammmg Slgnal m» g g
programmvng vollage ,,,,,,,, fi . 5
It takes sevelal ------ fi 8 §
1ple'ely program each _ 3 E
programmer uses 'on g g g n E
before checkmg the E 2 g g;
wogrammmge Faster g o g E g
by checking each 3 -------- E s E
lma'sly a - 5 cvdes- E ‘ 1 g §3
me a correct WW 5» n, g g a §’_ 3
lens] mogmm 0de a 2 3 3 5 355 E
ogrammmg mavgm. g g g 7 g; g a 3
6 no 3 u v
a: a 8
Q _ -
____________———
DSSHSQAoage us
a was Microohlp Technology Inc,
own Tmmloqy Inc.
3.0 CALIBRATION OF
PROGRAMMING VOLTAGE
ll you are using your own ieg coil (Wilh resoneni
capacllor) wiih irie MCHFZDO or woman. you may
need to celibmle the programmer lor yaur Cll'tullv
Follow iriis procedure ir you are unable lo program your
“9
a) Open irie programmer, and mm R5 and as lull
oounlarrtlocless. Remove Ihe lwr screws a!
me back ol the programmer.
bi Sei up lbe programmer and calipraiion lag as
shown in Figure er
sol up:
- conneci mo +9 voc power supply lo irie
programmer,
- Conneol ibe R$»232 cable lrom lhe exiernel serial
pod in me programmer box lo a COM port in lire
host,
~ Open up irie RFLAB sollwere on me hear
oompoler.
- Place irie calibrairori leg in me center ol irie leg
area on the programmer A oelibreiion leg is any
leg using MCRFZOO or MCHFZSO silicon and your
own ooil and cepaeiior.
c) Flun irie programming solrware (HFLAEi
POW-up Signal Level:
a) Click me Blank check bullon in me HFLAB
saliwere.
ll the device is blank, a green bar appears in the
window wilri a message indicating that il is blank.
|| irie device |S nor blank or me power-up signal is
our or range, a red bar appears in lrie window wilh
an error message lndrceling ihei ii is nor blank
The variable reslslar (R5) in me programmer
should be adiusled lo Drwlde spmper '|i7woowor'
vollaqe level 10 (he lag Coll, A Iyplcal signal level is
aboul 22 x GVPP al the lag coll. bul il can vary oul-
side or lnis range,
as: Tum clockiuise in ll15»lncfl inclemems
Repeal slap (a) while adiusllng R5. Once irie eevioe
nee been venlled as a blank, iurn ii clockwise one more
incremenl. Then mwe lo me nexi siep
DSSllaQA—pwe lzo
microIDT'V' 125 kHz Design Guide
mgumminq Signal Lmlz
er crior on me buiioris in RFUXB lor me
appropnaie iieia lype em proioool lor your lag
l] Euler irie programming pale in ilie leiil box
9) Click Ihe Program bulion, This will send lire
programming dare la rue oer/ice. A iypioal signal
level lor programming is 33: i V» er irie rag
coil, bur can very oulsiae ol inis range
h) Alier irie oevree has been progremmeii. rl
lrensmrls back me programmeo oaie lor venll~
cation.
ll II me am has been programmed correclly, a
green bar will appear ior e lew seoonds Wllh a
message inoioaling Programming suceeeslrrl.
ll ine programer has been unsuccessrul due io
lnsulllclenl programming signal levels. a message
rndioaiing Programming unsuccessful erI appear
in irie RFma. See Fgure 14. In iriis case. m
(‘H‘rgh Powar") musi be eoiusiee lo provide a
proper programming signal level lo irie rag cell.
Turn R7 orookwise in l/lS~lr\ch incremenlsi repeal-
ing sieps (l) irirougri in) unlll programmlng Is suo-
cesslul. Then lurn R7 clockwise one more
inoremenl
/’
No“. The MCHFZDO or MCRFZSO luck may be
lowed even il lhe programming cycle was
unsuneessluh lhemlore. a new MCRFZOO
semple may be mqulrsfl lor eecri pairs
mmuvh sleps in through 1h)-
i) Alier programming ls oompleleo sucoesslully.
keep iliese R5 and n7 eeliirigs ror lulure pm»
grammiog ol your lags once inie oelibraiiori nos
been done. remove the calibrairon lag lrem irie
programmer and rernsiall lire lour screws
FlGURE 3-1: MCRFZXX mlcrom
PROGRAMMER AND
CALIBRATlON TAG COIL
ARRANGEMENT FOR
PROGRAMMING SIGNAL
LEVEL MEASUREMENT
micron)TM
Contactless Programmer
Place your oorl in
outlined ma
@ 199! erbchlp Technology lnc
/lM oomllolm red
ll
ll
ts tor the
tor your tag.
BX! DDX.
mII send the
typical signal
on at the tag
nge.
nmmmed, II
late tor venti-
ld correctly. a
ocmds with a
rsueoesstul,
niecesslul due to
mls,amesaeg»
3551“! will appear
tn the case. m
ted to prvvtde a
sl to the tag call.
icrementa. repeat»
>grammmg ls sue»
kwise one more
ted successmlly,
gs tor luture pro-
ua oalrbratron has
alion tap lrom the
our screws.
cram
ER AND
N TAG COIL
.N'I' FOR
ING SIGNAL
iUREMENT
Mime” Toot-MW "‘
mICI'UlU '
(- woo-”e - m—-—-
'| “I
4.0 PROGRAMMING PROCEDURE
5) set up the programmer and open up the HFLAB
software on the host computer.
set Up:
. Connect the +9 VDC power supply lathe
programmer.
~ Connect rrom the exlet‘nal serial porl in the
programmer box to a COM port in the host com-
puter using the max cable,
bi P|aoe the HFID flat/ice at the center or the
programmer.
cl 0le eunlt Cheek button it you want to check
whether the device ls blank. This button can also
be used to verl(y that the dovroe IS assembled
properly.
Not The dim/toe can‘t be programmed unless it
ls blank
d) Enter the programmlng data In the HFLAB and
select appropriate data type.
e) it several dancers are going to be programmed
sequentially or any number, click the Auto
increment button and speclly the increment
number.
it Click the Program button. This will send the
data to the device,
gt ll the data has been programmed correctly,
there thI be a green bar with a message indicat-
ing Programming suooesslul.
it the programming has been unsuocessrul due to
out-or-range m the programming signal level, a
message and red bar wlll show up tndicallng
Progmmmmg unsuccesslul In this case, the
programming signal voltage may need to be
calibrated tor your tag. See the calibration proce-
dure tor the programming signal level in tho prevr
ous seaflon.
ht Repeat step (a) through (9; lor other tags.
DSSHGQA-pm 121
e 1995 Mleruehlp Technology the.
441 mailman:
it the host computer ooes not send programming data
to the programmer tor more than 3 seconds, the
programmer will timeout and reset, ll the programmer
does not respond to the host computer, there Wlll be an
error message indicating Programmer rime out. it
invalid programmrng gate is sent lo the programmer
durlng the loading ot the program ouller. the
programmer wrl| return a message Indicating lnvalld.
m croIDTM 125 kHz Design Guide
FIGURE 4-1: PWOGHAMMING FLOWCHART USING HFLAB
Cheek Cable Common and COM Pon
Place a blank lag on pmgrammer ‘
Cllck “Programmer Menu Eunon m RFLAB,
W Click “com Purl" Menu Bullon ‘
9 Salad 3 com Pen Number ‘
Programmer
power-up and Elm! Msssagev
wnnecfion uk’ “Programme: Time-om“
Adjust Ploqvammmg Swnal Level
Mum me F1 rammmg vaef-up
m5 um R7)
Signaw man 5) ct Iry a new nag.
clim “Blank Chew Bullan m HFLAE
mus m not blank
or mouse:
Enov message with 3 WW“ Blank
"Dewoe nal Blank“ “W" “VS" N0 am, ”New,
ov slgnal Iwel w
“Demos no! 91mm“
Ves
Message wllh a Queen Bar
“BIank/ngvammable”
Type in Programmmg
Data m RFLAE
3 X
Send Program Dale
Chd< “Pwam” Bunnn
sum Message mm a Red Bar
"Progvammmg Unsuccess‘ul‘
ng
smessiun
Mmsage Wllh a Green Bar
ongrammmg Suwasslul’
0551 ”SA-page |22 ©1935 Muuwnp Technology Inc.
microIDTM 125 kHz Design Guide
5.0 PROGRAMMING IN A
STANDARD TERMINAL MODE
In special cases. the device can also be programmed In
a standard terminal mode by executing the
renninal .exe program io-\wrndows\terminal.exei or
by any customer production solrware. The programmer
setup. signal waveiorms. and calibration prooedure are
the same as programming with the RFLAB.
The iollowing is a description oi how to inierlace a host
computer to Mlclocmp's coniactless programmer
without the use ol FIFLAB solnivare. The programmer
will check tor a blank. unlocked MCRFZXX lag belore
initiating programming. Once programming has been
completed, the programmer will reiiirn a pass or lail
code, The programmer communicates at 9600 baud. a
daia bris. i stop bit, and no parity.
Flgure 54 shows the programming llcw and
communication handshakes between host and pro-
grammer.
5.1 gmgummmkezun
Sending arr ASCI! w 157m to the programmer on ilre
ns-zaz interiaee wlII tell the programmer to wake up
and be prepared to receive commands, The
programmer will reply with ASCII ‘n- iszhi when it is
ready.
5.2 mm
Sending an ASCII '1' (54h) wlll signal the programmer
to read the part about being oontactlessiy programmed
and check to see it it is blank iall 1's) and unlocked. ll
ihe part is blank and unlocked. the programmer W|||
reply wrtti an ASCII ‘v‘ 159m to signiiy programming
should continue. ll the part is not blank or not unlocked.
the programmer wlll reply with an ASCII ‘N' iAEhl to
indicate an error. lt is always necessary to periorm a
blank check oelore programming manzxx devices,
5.2.1 SENDING DATA TO THE PROGRAMMER
ll the programmer responds with an ASCII iv'.
indioaiing that the part is blank. the PC can begin
passing the 16 bytes ol required daia to the
programmer data butter. AnMCFlFZDO oonligured lcr
128 bits uses all is bytes or data In the trensier; when
programming a 96-bit device, however. blIs 33 through
54 are don't care and are ignored by the menace.
The daia should be passed in ASCII equivalent hex
bytes and the programmer will admowledge the receipt
oi each byte by echoing back what it has received. For
example. to program 05 hex data into the rust byte. the
PC would send ascu tor iauhl. the programmer would
echo ‘o- back. Next. the programmer would send ASCII
‘5' (35m. and the praglammerwlll echo badt ls: All oi
the data must be sent in UPPERCASE ASCII
equivalent only, see Figure 51 tor a typical
programming sequence.
5.3 Mamnflw
Alter 16 bytes oi data have been received by the
programmer. it is ready to begin programming the data
butter into the Manzxx, Sending an ASCII ‘V‘ isshl
will tell the programmer to program the to bytes it has
received and verily that the device has programmed
properly. When the device programs properly. the pro-
grammer replies with ASCII ‘y‘ i79h). ll ihe program-
ming was not suocesslul. the programmer replies wrih
ASCII ‘n’ (65h). A successiul programming operation
should take about a to 4 seconds per device.
5.4 MM
ll ihe PC does not send a byte to the programmer ior
more than 3 seconds. the programmer wlll timeout and
reset. The entire programming sequence wlll need to
be repeated. beginning with ihe programmer wake-up
byre Assn w,
ll invalid bytes are sent to the programmer dump the
loading ol the program butler. the programmer Wl|I
VeIan an ASCII '|' (49m. In ihls case. the entire
programming sequence must be repeaied, beginning
with the programmer wake—up byte ASCI! “w
0551139A-Wge in
or tests microchip Tedirieiogy lric.
microIDT'V' 125 kHz Design Guide
FIGURE 5- .
TVPICAL SEQUENCE
The Mlvwmg Is he progvammlng sequence necessary m
wake up ms programmer, check n a McRszx pan ls
Nankr unmet: am ready to be pmgammed. send
F! E2036485A6978838796A55ACJDZE| r ASCII data |o
me pro rammer, and rnsuucn me pmgvammer (0 program
and vs! (he device
STEP1 PC Sand _. Programmer
WAKE uP ‘w- lo rne replles wulh
programmar 4- ‘R' Io me PC
STEP2 Programme! '
vEva BLANK PC Send _. va-eswnn ‘V
Ar re the a \he dewoe
programmer <— ls ox and ‘N' rr
mere Is an snot
STEP3
PASS re mass
or: mu
F PC Semi —— Programmer repues
Byla‘ ‘F' [0 Drug ¢——~ w||h ‘F‘
1 we Send —— Programmer reures
vamq, n—wllh‘f
E PC Send —- Programmer reprres
B 2 ‘E‘ w Dmgv <—— wllh 'E‘
We
2 PC Send A Programmer replves
‘2‘ lo ping. <-— m ‘2'
| .
l |
x r
| |
2 PC Send —— Programme! lephes
fins 61: ‘2'10 pmg. <— wllh ‘z‘
E PC Send —- Programmer replves
‘E‘ re PW? <— wllh ‘E'
1 PC sem —— Programme! replies
3 e ‘l'wprag <— wnn'r'
le 1
V F PC Send —> programmer replies
“F to ping. 4—— wlm “F‘
STEP4
PROGRAMNEHIFV
PC Saw ‘V' I0 me
programmer la inmate
a program/veniy sequence
<— pmgrams OK and
no imam program/venfy)
Programmer
rephes wrm ‘y'
n ma device
‘n' r! mere rs an
error
Nola:
Secllons 2.0 and 10A
See me srgnal waverorms and callhranon procedure rrr
fi/I—
D551 rasA—paga \24
re was Mrcrochrp Technology Inc.
Hl
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Fechnomgy Inc,
microIDT'VI 125 kHz Design Guide
’/——-—__—-—,——_—_—-—/
TABLE 54 ASCII CHARACTER sEI‘
mm Slgnlfluni cmrnelers
Hex o | 2 3 4 5 s 1
0 NHL DLE Space 0 @ P p
‘ SOH mm x ‘ A o a q
2 51x Dcz " 2 a n b ,
g 3 ETX D03 a 3 c s c s
% 4 £07 D04 5 4 D T u x
g 5 END NAK % 5 E u e u
5 6 ACK 5m 5 a F v 0 v
a 7 Bell ETB ' 7 e w 9 w
E a as CAN 1 a H x n x
E. 9 HT EM ) 9 | Y I y
‘2 A LF sua ' : J z j z
§ B VT 550 , ; K [ k ‘
" c FF FS , L \ | 1
D on GS , x M 1 m 1
E so R5 v > N A n ~
F sn us / 7 o 7 a ma.
D551139A17=ge 125
v9 was Mmoclw Technology Inc
microIDTM 125 kHz Design Guide
6.0 mlcrolD’" PROGRAMMER SCHEMATIC
DSSHJQAW 125
__________——————
©1999 MicrocNo Tawmw me.
>‘
um an
(z
15
16
|7
IIL
7.0 micron)” PROGRAMMER BILL OF MATER|ALS
microIDT'V' 125 kHz Design Guide
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Instruction to the User
This equipment has been tested and found to comply with the limits for a class B
digital device, pursuant to Part 15 of the FCC Rules, These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications However, there is no guarantee
that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be
determined by tuming the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
0 Reorient or relocate the receiving antenna.
0 Increase the separation between the equipment and receiveri
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
0 Consult the dealer or an experienced radio/T V technician for help
This equipment has been certified to comply with the limits for a class B
computing device. pursuant to FCC Rules. In order to maintain compliance with
FCC regulations, shielded cables must be used with this equipment. Operation
with non-approved equipment or unshielded cables is likely to result in
interference to radio and TV reception. The user is cautioned that changes and
modifications made to the equipment without the approval of manufacturer could
avoid the user‘s authority to operate this equipment.
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