0600-00030 Laird Technologies, 0600-00030 Datasheet - Page 11

• Manufacturer Part Number: 0600-00030
• Description: ANTENNA 915MHZ 1/4WAVE 3.5"RPSMA
• Manufacturer: Laird Technologies

Specifications of 0600-00030

• Antenna Type: Whip: 1/4 Wave, Fixed
• Number Of Bands: 1
• Frequency: 902MHz ~ 928MHz
• Vswr: 2
• Gain: 1dBi
• Termination: RP-SMA
• Mounting Type: Connector
• Height (max): 3.5" (88mm)
• Dimensions: 3.5 in L
• Technology Type: 1/4 Wave Wireless Transceiver Antenna
• Termination Style: RPSMA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

* EEPROM Default
Note 1: For both Broadcast/Addressed packets, the Session Count for Full Duplex is 2x the value of Session Count in
Half Duplex.
Note 2: It is best to have all the transceivers with the same Session Count Refresh (EEPROM address C4h) value.
Session Count Refresh must not be set to 0h.
Case 1: In this case, a radio loads its Session Count with its Session Count Refresh. This is suitable for Half Duplex
communication where immediate response is not received from the remote radio.
Case 2: In this case, a radio loads its Session Count with (its Session Count Refresh + its Transmit Retries). This
case is suitable for applications where there are high levels of interference and it is likely that transmit retries will be
necessary to maintain reliable communications.
When an addressed packet or a response to a broadcast packet is sent, the sending radio will listen for a successful
acknowledgement.
acknowledgement is received or it has exhausted all available transmit retries. If two radios are on the last hop of the
current session and a retry is required, it is possible that once the current session has ended the receiving radio could
go into session with a different radio and miss the final packet of the previous session. Adding the radios Transmit
retries to its Current Session Count will ensure that the radio does not exit the session when the remote radio is using
a Transmit Retry.
Case 3: In this case a radio loads its Session Count with the remote radio’s Session Count. This is suitable for full
duplex applications as the Session is extended as long as there is communication.
Note: This is the default case with which the radio ships and works well for almost all applications.
Case 4: In this case, a radio loads its Session Count with the remote radio’s current Session Count. This is suitable
for daisy chain applications and large networks in which radios cannot stay in session longer than needed.
Case
Receive Mode
If the transceiver detects a sync pulse while in Receive Mode, it will join the Session and start receiving data. While in
Receive Mode, subsequent data/RF Acknowledge of up to 128 bytes can be received every hop.
When a transceiver is in Session, its’ Session Count is decremented by one every hop. When the Session Count reaches
zero, the transceiver exits the Session. In order to continue receiving data, the transceivers update their Session Count
every time data/RF Acknowledge is received. The SLock0 and SLock1 EEPROM parameter settings control Session Count
as shown in the Session Count Truth Table below.
3*
1
2
4
Help Me Decide:
SLock0
0
0
1
1
SLock1
0
1
0
1
If an acknowledgement is not sent, the radio will resend the packet until either an
Transceiver receiving an addressed packet
Radio loads its Current Session Count with
Radio loads its Current Session Count with
Radio loads its Current Session Count with
Radio loads its Current Session Count with
the remote radio’s Current Session Count
(its Transmit Retries + its Session Count
Table 4 - Session Count Truth Table
the remote radio’s Session Count
its Session Count Refresh.
Refresh)
Radio loads its Current Session Count with its
(its Broadcast attempts + its Session Count
Radio loads its Current Session Count with
Radio loads its Current Session Count with
Radio loads its Current Session Count with
the remote radio’s Current Session Count
Transceiver receiving a broadcast packet
the remote radio’s Session Count
Session Count Refresh
Refresh)
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