Difference between SigNASⅡ and SigNAS3

This time, introduce the differences between SigNASⅡ and SigNAS3.

Each of these is also introduced on our homepage below, so please refer to them.

As mentioned above, SigNAS3 has superiority over SigNASⅡ in terms of functionality and performance, 

NAND Flash Memory Tester

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Exterior photos of the basic configuration of both are shown below.

1. Basic configuration

Both consist of a main board for control and a board (subboard for SigNAS3, daughter board for SIgNASII) equipped.

2. External shape

As the dimensions shown in the photo show, SigNASⅡ is more compact than SigNAS3.

However, with SigNAS3, the main and sub boards are connected with a standard 1m I/F cable.

3. Maximum number of NAND installed

SigNASⅡ: 2 (4 for TSOP only), when two daughter boards are connected

SigNAS3: 128 pieces, when configured with 8 sub boards x 16 sockets

4. I/F with control PC

SigNASⅡ: USB2.0

SigNAS3：USB2.0 or USB3.0

5. Operability

Both allow main settings and operations based on the GUI, but the later model SigNAS3 has more functions.

6. NAND voltage settings and changes

SigNAS II is semi-fixed and requires hardware changes.

With SigNAS3, settings and changes can be made using the GUI or script.

7. Command Script

For commands used in scripts that write your own measurement sequences.

In SigNAS II, the basic command is one character, but in SigNAS3, it is six characters, so it seems easier to understand the relationship between the functions.

Example

Function	SigNASⅡ	SigNAS3
Block Erase	e	BKERAS
Page Program	p	PGPROG
Page read & dump	g	PGRDDM
Page read & compare	c	PGRDCP

8. Function

Here is no difference in basic functionality between the two.

However, SigNAS II has limited hardware resources compared to his SigNAS 3, so it takes time to support new NAND models and new functions, and it is difficult to support them (Vth distribution: https://siglead.com/vth -distribution-measurement/ etc.).

9. Price

There are no major differences when comparing the basic configurations.

10. Others

SigNAS II does not have a cooling fan installed in the main unit (as it is unnecessary) and is quiet.

As mentioned above, SigNAS3 has superiority over SigNASⅡ in terms of functionality and performance,