Advertisement
DataPage MK2 (USA) Desktop UHF Radio Paging System
Fig. 2 Connection port detail
PL1 is an optional serial port which must be specified when the unit is ordered
Group Calls
As previously stated, this system will accept pager identities from number 1 through 9,999. Most pagers will
accept a minimum of two identities, enabling the pager to respond to selected group calls as well as its own
unique identity. Advanced pagers offer multiple identities, again, enabling one to be reserved for its own unique
identity and then for the pager to belong to a selected number of groups of pagers which can be called
collectively by entering just one identity or number. Sometimes the requirement is to have a global call and upon
the entry of this specific number the system will call all pagers at one time. As group calls are created from
single pager identities, any number of groups can be constructed to suit individual customers requirements. The
default Global Group Call number is 9999.
Performance
The system will normally cover 95% of all range requirements with the use of just the internal antenna. The
helical quarter wave antenna supplied with the system can provide ranges of up to half a mile free space and will
normally cover industrial buildings of considerable size. This short helical wound antenna can be replaced with a
straight quarter wave which can provide ranges in excess of one mile in free space and considerably enhance
the units performance in industrial or commercial environments. Position the unit on the opposite end of the desk
to computers, telephones and intercoms etc. to minimize the potential for cross interference.
Also, remember that the capability of your system will be affected by:-
Foil backed wallboard, metal mesh, wire reinforced glass, metal sheeting, large mirrors, suspended ceilings, lift
shafts etc. These can all reflect and thereby reduce the signaling capability of the transmitter. A little forethought
prior to installation, coupled with a few tests, can normally avoid most of these problems.
9
DPUSA 02/00
Issue 2
Advertisement
