We produced this precision pulser for our in-house use, we use it mostly to test the netMCA-3 coming out of production for temperature stability etc.

It uses a relay with mercury wetted contacts and a highly stable reference; since the netMCA is very stable
(we specify gain drift for them being <30ppm/C, typically we ship well within 20ppm/C) the pulser uses a <5ppm/C reference and has low power consumption, thus negligible warm up.
It pulses at apr. 50Hz, highest pulse is 2.5V.
It is powered off the preamp power D-9's +/-12V of the netMCA-3 (or that of any shaping amplifier with the same, typical pinout).

1500 Euro, 12 weeks delivery time. Order