User's Guide

12
Arad Technologies Ltd. | st. HaMada, Yokneam Elite , 2069206, Israel | www.arad.co.il
Sym
Description
Min
Max
Default
Units
TPOR
Power ON to meter ready (Note 1)
500
500
msec
TPL
Power/Clock low time
500
1500
µsec
Power/Clock low time jitter (Note 2)
±25
%
TPH
Power/Clock high time
1500
Note 3
µsec
TPSL
Delay, Clock to Data Out
250
µsec
Power/Clock Carrier Frequency
20
30
kHz
Ask Data Out Frequency
40
60
kHz
TRC
Reset command. Time for
Power/Clock low to force register
reset
200
msec
TRR
Meter Re-Read Time (Note 1)
200
msec
Notes:
1. During TPOR power/clock pulses can be present but are ignored by the register. Some
registers may not repeat message without reset command
2. The register clock jitter is specified because some registers may be sensitive to large
variations in clock low time.
3. The register shall be static device. The register shall remain in the current state as long as
the Power/Clock signal remains high.
5.2.3 Supported readers:
2W
1. TouchReader II Sensus M3096 – 146616D
2. TouchReader II Sensus M3096 – 154779D
3. TouchReader II Sensus 3096 – 122357C
4. Sensus AutoGun 4090-89545 A
5. VersaProbe NorthROP Grumman VP11BS1680
6. Sensus RadioRead M520R C1-TC-X-AL
3W
1. VL9 ,Kemp-Meek Mineola, TX (Tap)
2. Master Meter MMR NTAMMR1 RepReader
3. Sensus AR4002 RF
5.3 Encoder Power mode
5.3.1 When occurred timeout is indicated no activity of readers (200msec), SPI or Readers
the system enters power down mode.
5.3.2 The system can wake up from power down mode only when SPI is received or Reader
clock is received.
5.3.3 The power down mode of the system is HALT mode (minimal power consumption).
5.3.4 Before entering power down mode SPI module is configured as EXTI in order to
enable wake up from HALT mode when SPI message is received.
5.3.5 PB0 is configured to EXTI in order to wake up from HALT mode when Reader’s
clock is received.