User's Manual

Pacific Crest Corporation ADL Access User Guide – Dealer Version Page 20 of 28
- With a length of time during which there is no transmission (EOT
Timeout)
- With a special character (EOT Character)
For systems using Pacific Crest radio modems exclusively, the default
setting is Transparent with EOT Timeout. When you select Transparent
with EOT Timeout you should input the amount of time in milliseconds you
want to signify the End of Transmission:
The default is 50 milliseconds.
When you select Transparent with EOT Character, you should select the
ASCII character you want your radios to use:
The default is the “NUL” ASCII character. To select another character click
the down arrow to the right of the EOT Character field and click your
choice. You can choose among the following characters: NUL, SOU, STX,
ETX, EOT, ENQ, ACK, BEL, BS, HT, LF, VT, FF, CR, SO, SI, DLE, DC1,
DC2, DC3, DC4, NAK, SYN, ETB, CAN, EM, SUB, ESC, FS, GS, RS,
US, SP, !, “, # and $.
Packet Switched protocol is unique in that it is a “command” mode. In all
other protocols, incoming serial port data is formatted into packets and
transmitted automatically. When Packet Switched protocol is selected,
external equipment must provide the packet formatting, scrambling, error
correction, and housekeeping functions, and send commands to the radio to
perform the actual transmission and reception of data. This may be useful in
specialized applications where settings (such as channel selection) must be
changed “on the fly” and the controlling serial port equipment can be
programmed to perform these functions.
TRIMMARK II/IIe is a proprietary protocol used by Trimble
TRIMMARK™ radios. ADL radios are fully compatible with
TRIMMARK radios, but only when set to TRIMMARK protocol.