问题：
Can two Model 2657A be placed in parallel to gain higher current?
答案：
The 2657A can be connected in parallel with another 2657A to double the current available.
- Please make sure that the LO is tied to ground when you are connecting the 2657A in parallel to double the current available.
- You will need to use the 2657A-LIM-3 to connect the LO terminals together.
The 2657A should never be connected in series with another 2657A because the safety protections in place will be negated by the higher voltages generated.
For details on combining 2651A instruments, see this FAQ.
常见问题 ID 729096
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