Collecting Data
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Collecting Data
This chapter provides general information about memory, recording data, downloading data, and removing files
to free up memory space.
Memory
The Sokkia Atlas is equipped with an external SD/SDHC memory card slot. Although you may install an SD/SDHC
card of any memory size into the slot, the receiver recognizes up to 32 GB of memory. For specific information,
see “SD/SDHC Card Recommendations” on page 55. It is necessary to use recommended SD/SDHC cards to
ensure accurate and reliable data logging and minimize any occurrence of data loss, card initialization, etc. The
Optional Authorization File (OAF) controls the receiver’s memory capacity. As data is logged to the card, the REC
LED displays the memory capacity status. See “REC LED” on page 12 for more information. To access the raw data
files on the memory cards, see “Managing Files” on page 37.
SD/SDHC Card
The SDHC card slot is located to the left of the LED Display
Panel inside the battery compartment and connects an
optional SD/SDHC card to the receiver board to provide
memory. Once installed, the SD/SDHC card usually remains
inside the receiver. You can access the data that resides on the
SD/SDHC card via the USB or serial port, or Bluetooth wireless
technology. See “Managing Files” on page 37. A secure digital
card can be purchased at a local computer supply store.
Installing the SD/SDHC Card
1. Make sure the receiver is turned off.
2. Remove the detachable battery to the left of the LED
Display panel.
3. Carefully insert the SD/SDHC card, label-side down, into
the card slot located at the top of the battery
compartment.
Once the receiver is turned on, the receiver board will detect the SD/SDHC card, and it will be ready to use
as needed.
Initializing the File System
The Sokkia Atlas supports a removable SDHC memory card to log raw data files. The memory card must be
initialized before its first use. Initializing the memory card while in the receiver ensures the card is formatted to
the TPS proprietary file system (TPFS). This file system allows the receiver to create, store, retrieve, delete, and
restore raw data files.
It is also advisable to re-initialize the memory card periodically (e.g., quarterly). This erases any data on the card,
checks for bad blocks, and sets the card up afresh.
The user can use SRU to initialize the file system.
Card Slot
(for SDHC card)
Always initialize the file system on the installed SD/SDHC card before the first use. The Initialization
procedure is described below.