[time-nuts] Re: Help with pinout on Trimble NetR5 GPS receiver 26-pin connector

[Bob Camp]

Hi

The “official” Trimble adapter shows up on eBay for about $50 to $70 (delivered) if
you shop for a while. It gives you the ethernet connections as well as power. The 
LEMO port cable also shows up, often for a bit less money. 

The gotcha is this (from the NetR5 manual): 

Do not allow a battery that is in storage to discharge to below 5 V. A battery that reaches deep discharge level (5 V or less) cannot be recharged and must be replaced. (To protect a battery that is in use from deep discharge, the receiver switches power sources or stops drawing power when the battery pack discharges to 5.9 V.)



Bob



> On Mar 3, 2023, at 8:41 PM, Stan via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> I just happened upon a Trimble NetR5 GPS receiver in working condition at a
> irresistible price. Unfortunately, there were no accessories provided with
> the receiver.
> 
> 
> 
> I need to charge the battery, and I was hoping to hook into the 26-pin
> connector to do that. I downloaded the user manual for the NetR5, but it did
> not show the actual pinouts. Then I downloaded the manual for the NetRS, a
> similar receiver that has the same 26-pin connector, and I'm assuming the
> same pinout. The NetRS manual does show the pinouts, but for some reason the
> list has omitted pins 1-5. Based on the functional descriptions of pins
> 6-26, I'm pretty sure that it's two of the first five pins that are used for
> external power and battery charging.
> 
> 
> 
> Does anyone know which pins are used for that?
> 
> 
> 
> Thanks,
> Stan
> 
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