Although SD cards tend to degrade with use (limited number of write cycles), VeEX products don't stress them, so they are unlikely to fail. Nonetheless, if you have been instructed to replace the SD card, use 16, 32 or 64GB SDXC C10 U3 cards.
Current VeEX handheld products, with SD cards, accept up to 64GB SDHC/SDXC Class 10, with >40 MByte/s read speed. The card will be formatted with a customized set of partitions. It is highly recommended to upgrade the storage capacity for older products shipped with 2GB or 4GB cards, like TX300s, TX320s and earlier RXT-1200.
- Related Products: TX300s, TX320s, TX340s, RXT-1200
- Contact us for CX3xx products (SD cards should only be replaced if damaged)
First Contact Us to confirm the type of SD memory card and storage capacities supported by the test set.
Second, if you plan to source the SD card locally, stay with industry-recognized quality brands, such as SanDisk, PNY, Samsung, etc. Avoid being enticed by low prices of bargain brands.
- Select an SDHC or SDXC memory card within the capacity range recommended by VeEX's Customer Care agent. Do not use larger memory capacities.
- Select a 16GB, 32GB or 64GB card with Speed Class 10 (C10). This is indicated by a C symbol surrounding the number 10. It just means that the card supports >10 MByte/s, hence we recommend cards that explicitly display speeds of 48 MByte/s or better. They are sometimes marked with the UHS Speed Class 3 (U3 or 3 inside of a U), to indicate they support >30 MByte/s.
FYI: More About SD Card Markings & Speed Classes
There are many different markings and labels shown on SD and microSD cards, and their use vary from vendor to vendor, even by models. You may find references to different speed class markings, besides the typical Speed Class and UHS Class. Although not all ratings may be relevant to our applications, here is a summary for your information, since you may see them while comparing products:
- Nominal storage capacity.
- SD Capacity Class, format or type: SD (up to 2 GB), SDHC (2 GB to 32 GB), SDXC (32 GB to 2 TB).
- Read speed rating, in megabytes per second.
- Video Speed Class: V6, V10, V30, V60, and V90. The number indicates the maximum write speed in MByte/s.
- Ultra-High Speed (UHS) Bus Type (I, II, III): Relevant to ultra-fast applications, UHS-I indicates a theoretical maximum of 104 MByte/s, UHS-II up to 312 MByte/s, and UHS-III up to 624 MByte/s.
- Speed Class (C2 to C10). Minimum sequential write speed. C2 >2 MByte/s, C4 >4 MByte/s, C6 >6 MByte/s, and C10 >10 MByte/s.
- UHS Write Speed Class (U1, U3), based on the card's write speed. U1 supports a minimum write speed of 10MB/s. U3 supports a minimum write speed of 30MB/s.
- This speed multiplier rating is a bit arbitrary (referenced to the 150 KByte/s read speed of the original CD-ROM disks). Nonetheless, it may be used to compare between two cards (e.g., a 1000x should be twice as fast as a 500x).
All these speed classes listed above are based on sustained sequential writing. However, some cards may also display the A1 or A2 ratings, or Application Performance Class Specification, focusing on cards running applications. A1 supports 1500 random input-output access per second (IOPS) reads and 500 for write. A2 supports 4000 random IOPS reads and 2000 IOPS for write. This rating is not significant or relevant to VeEX test equipment.
How to Replace the Test Platform's (Chassis) SD Card
With the test set OFF, (for RXT, remove the test module) and use a magnetic Phillips screwdriver to carefully remove the SD Card cover plate, preventing the screw(s) from falling into the test set or getting lost.
Gently push the card to unlock and eject it, then carefully pull the old card out.
For the RXT-1200, it must be sitting horizontally on a flat surface (desk or bench), with the screen facing down. Remove the test module, then open the 
SD card slot. Gently push the SD card to unlock and eject it.
It is recommended to attach a piece of adhesive tape or sticky paper, to help extract the original SD card and prevent it from sliding inside of the chassis.
Then insert the new SD card, in the same orientation as the old one, and push it slightly until it locks (clicks).
- Download the latest (last) platform software version available for the product. They are available in the product's page at www.veexinc.com.
- Unzip the file and copy the resulting install package (.gz or .xz) into the root of a FAT32 USB memory stick.
- Insert the memory stick into one of the test set's USB-A ports.
- Make sure the test set DC jack is connected to the AC/DC adapter and the battery light, on the front of the test set, is green or orange.
- Use the appropriate button combination to turn the test set ON in software upgrade mode:
- RXT-1200
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+
- TX300s
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- RXT-1200
- The new SD Card gets formatted and partitioned as part of the upgrade process.
- In certain cases, it is recommended to perform the software upgrade twice. Refer to the product's Release Note for further information.
- For RXTs originally running 2.x.x or older versions, they must be upgraded first to version 4.x.x and then to the latest 5.x.x version available.
- To download platform version 04.00.0013, go to https://v-express.com/, accept the terms and conditions, click on the Software Download button (no password required), select the RXT tab, check the box for the rxt-Release-04.00.0013 and click on the Download button.
Please contact our local partner or our Customer Support team for any additional information about SD card upgrades.
The SD or microSD cards in RXT test modules do not require any capacity upgrades. DO NOT replace them unless explicitly instructed by a VeEX Customer Care representative!