Advanced Telemetry Systems, Inc. R4500S Reference User Manual R05-11-A
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Screen 2
The number entered here should represent the total number of pulse rates you are using in your study. There
should not be more than one transmitter per frequency. If you need to use multiple transmitters per frequency you
should consider using a coded receiver and coded transmitters. Enter the number f puserates used and press
“ENTER”
.
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.
If the defaults were set up correctly, just press enter for each item listed, and the cursor will move through each
setting in the Aerial Setup windows. When all settings have been entered, the Aerial scan will start.
The default settings are used to pre - enter the values for each item listed for the Aerial Setup. Pressing
“ENTER”
on these values stores them into memory. If there needs to be any changes made to any of the items, pressing
“ENTER”
will store the changed value into memory, and that changed value will be used in the Aerial scan.
If the defaults settings are not used and a different value is entered, the new value entered will be used for that
Aerial Scan until the scan has been terminated. If a new scan is started by starting an Aerial Scan from the Main
Menu, the default values will be returned to the listed items. If a new value is needed other than the default values,
selecting a new scan will be needed to enter the new values.
When an Aerial Scan has started, the R4500S will start scanning the frequencies in the table at the entered scan
rate time. When a transmitter is heard on a frequency, pressing
“HOLD”
will stop the scan rate and remain on that
frequency until
“HOLD”
is pressed again. When Hold is pressed the second time, the R4500S will resume
scanning through the frequencies in the table at the scan rate time.
You may use the CHAN up
and CHAN down
keys at any time to scroll through the channels. When
the R4500S is scanning through the frequencies, pressing the chan up or chan down keys will override the scan
rate time, and advance forward or backwards through the frequency table. While in
Hold
, pressing the chan up or