Advanced Telemetry Systems, Inc. R4500S Reference User Manual R05-11-A
18
Screen
3
PR1-PR4: The pulse rate of your transmitter in pulses per minute. (Range = 20ppm – 250ppm)
ppm :
The ppm adjustment (tolerance) is a +/- pulse rate range in ppm used to filter the incoming
signal. The tolerance may be set in the range of 00ppm to 10ppm. There is always a +/-
10ms buffer added to the tolerance setting. A tolerance of 1 for PR2: 045 would indicate
the R4500S should accept signals coming in that range from 44ppm (1364ms) to 46ppm
(1304ms) +/- 10ms = 1374ms to 1294ms. A tolerance of zero indicates the R4500S should
accept only signals that are the specified range +/- 10ms (i.e. PR1:055 should always be
55ppm (1091ms) +/- 10ms = 1081ms to 1101ms). You can use a zero tolerance when
using ATS microprocessor transmitters. A larger tolerance will be needed on transmitters
that have a pulse rates that can drift with temperature or age.
Screen
4
(A = Store Rate
or
Log Period
,
see below
)
Time Out:
The amount of time the receiver will stay on a Frequency while attempting to
detect a transmitter. If no transmitter is detected in the Time Out period, the
receiver will advance to the next frequency in its frequency table. This feature
allows faster scanning by truncating the scan time if no transmitter is detected in
the Time Out period. The user defines the parameter (Range = 001 – 300
seconds). Refer to section
14.0
for information on setting the Time Out value.
Scan Time:
The amount of time to hold on a frequency and attempt to detect transmitters. The
Scan time will override the Time Out time, if a pulse has been detected during the
Time Out period. The Scan Time is set to whatever you need this set at (Range =
001 – 300 seconds). Refer to section
15.0
for information on setting the Scan
Time value.
A:
If Continual (1) was selected in screen 1 this will read
Store Rate
If Periodic (2) was selected in screen 1 this will read
Log Period
Store Rate:
This defines how often a transmitter’s detection will be stored for
each antenna (Range = 0000 – 1440 minutes). For example if the
Store Rate is set to 10 minutes and a scan time of 15 seconds, its
presence will only be recorded once during that 10 minute period.
The data stored will include the time stamp of the strongest signal
strength measured in one 15 second scan time during the 10
minute scan period. Stored with it will be a total number of pulses
that the receiver determined to be pulse rates during the 10 minute
store period along with the total number of pulses detected during
the Store Period.
