| Q: We experience
a very short read range with several readers, but they are
far from each other (more then 65 feet). I think in this case
it is not necessary to set channels to different values. Am I
right? |
|
A: No, readers set
to the same channel can interfere around two thousand feet in distance. |
| |
| Q: Which is the side that the
tag must present towards the reader? Is the Tag read with
the Tag serial number side facing the reader? |
|
A: The Tag must show its
front side to the Reader to be read. The Tag front side
is the side with no serial number on it. |
| |
| Q: Is reading range different
if tag stands still in front of reader? |
|
A: It is more "easy" to
read the tags if they are moving; based on the technology used.
Usually it's difficult to have something "stopped" to identify,
but if the tag is stopped, then you should always refer to the
minimum specified reading range. |
| |
| Q: We have problems with the
reading range of S1255 Mark tags. The Tags are mounted
inside passenger cars directly onto the windscreen. |
|
A: Tags can be mounted
directly onto the windscreen surface if the screen is flat and
if the Tags are attached using S1953 CardTape. S1953 CardTape is
made of a special material that does not reduce the read range
as most commercially available tapes do.
An alternative is to use the S1951 WinFix tag holder for
windshield mounting. The S1951 provides an air-gap between the
Tag and the windshield resulting in full read range. |
| |
| Q: I have a problem with the
reading range of S1255 Mark tags in my Mercedes 500. The Tag
is mounted inside the windscreen using the S1951 WinFix. When I
present the Tag for the reader by holding it outside the car
through the sun roof or side window there are no problems at
all. How can I solve this problem? |
|
A: Some luxury cars have
metal coated windscreens for reduction of sun rays. Radio
waves can not pass through the metallic coating resulting
in a very poor Tag reading range. Usually some spots of the
windscreen are left uncoated for tagging purposes. Please
consult your driver manual or car dealer to find out where those
uncoated spots are located. If no uncoated spots are available
the tag must be mounted in another place. For example inside the
front bumper or inside the outside rear mirror. |
| |
| Q: Different numbers printed
on tag and the number received when its read. We have
readers and tags from TagMaster. The above referenced tags show
a number on it at the bottom right of the tag for example
61267209. When we read the number through the readers ANOTHER
number comes up on the screen. Is this OK, and if, why are there
different numbers? Or do we make a mistake? |
|
A: The printed number at
the bottom right of the tag is the tag manufacturing serial
number. The electronic id-number inside the tag chip (that you
read using a TagMaster reader) is another and different number.
The serial number and the id -number can not be the same and
should not be the same for many reasons - one reason is
security. When tags are delivered TagMaster also deliver a "tagfile"
on diskette. That tagfile contain a table where you can see what
serial number that corresponds to what id-number. Another way to
find this relationship is of course - as you already have noted
- to read the tags. |
| |
| Q: Unpredictable barrier
openings. We have just installed a TagMaster system with 6
PassMan long range readers and 350 S1450 programmable cards on
trucks. The installation is made according to descriptions in
manuals and data sheets. The cards and readers operates in low
bitrate and a recoded with Wiegand 26 bits format. The reading
range in the system is very unstable. When a truck approaches a
barrier/reader combination at an entrance or exit gate the
barrier sometimes opens at 22 - 26 feet away but the distance is
often shorten and frequently much to short - like 6 - 9 feet.
This behavior makes the system almost unusable. Is there
somebody that knows if this problem can be cured and how? |
|
A: The MagPass
PC-software that is used to program cards for a PassMan system
offers the option to program cards in either "Card mode = Single
cards" or "Card mode = Multiple cards". The mode "Multiple
cards" is intended for applications with a need to read several
cards at the same time. The mode "Single cards" should be used
in most other cases. When the mode "Multiple cards" is used then
the cards are programmed with a so called random interval mode
which means that the time it takes to read a card varies. That
in turn means that when cards approaches a reader they will
often be read at different distances away from the reader. If
the movement speed is slow the variation in distance will not be
significant but with faster speed the variations may cause some
trouble. We assume that you programmed the cards using the mode
"Multiple cards". To get rid of the distance variations
reprogram the tags using the mode "Single cards". |
