The PIN definition of 2601B-pulse

Hi, I have noticed that the PIN definition of 2601B-pulse rear panel is quite confusing as compared to those of 2602B or 2612B. 

The following figs are adapted from the manuals of 2601B-pulse and 2600B.

The manual does not clearly indicate the PIN definition of Channel A: DC/pulse and Channel A: DC.

I guess:
For Channel A: DC,
PIN 1 is LO,
PIN 2 is SENSE LO ,
PIN 4 is HI,
PIN 8 is SENSE HI,
and PIN 3 5 6 7 are GUARDs?

For Channel A: DC/pulse,
PIN 9 is HI,
PIN12 is LO,
PIN 15 is SENSE HI,
PIN 16 is SENSE LO,
and PIN 10 11 13 14 are GUARDs?

Are these PIN definitions correct?

Thanks!


 

The 2601B-PULSE is designed for connections through the 2601B-P-INT and the four BNC that it presents.

Can I ask the reason you want to separately connect to the DC and the Pulse output connectors?

YES, I understand that the 2601B-P-INT is used for BNC connections.

However, we are going to connect 2601B-pulse to the Triax connectors of the prober station for low current measurement.

In addition, if both the 2601B-P-INT and the guard were used, the BNC outside shell would be connected to the guard, which is unsafety.


 

I agree with your pinout definitions with one exception.
The orange DC/Pulse connector for the 10usec current pulse is not guarded.
Consider the unused pins to be open.

The green connector is essentially a 2601B SourceMeter.  Same pinout.

If I may revisit the idea of using the 2601B-P-INT:
if using the instrument to excite laser, the -P-INT gives you an interlock to integrate with your safety scheme.

It also gives you a single set of connections for SMU or Current Pulser.

It is correct of you to point out that when routing the SMU on the BNC output of the -P-INT, the SMU guard voltage is on the outer shell of the BNC cable.
But this is a max 40V SMU instrument, so this does not generally pose a safety concern and especially if the cables are already inside of the light curtain safety barrier.
At 40V and less, it is very economical way to get the benefit of a guarded cable and improved settling times and less cable leakage.

Consider using the 7078-TRX-BNC to reconnect the BNC outer shell to the triax inner shield which typically carries guard of a SMU instrument.