Able to be operated in CV and CC modes, 9129B has 19 in. half-rack form factor and features 3 isolated outputs that can be adjusted independently or combined in series or parallel to output higher voltage or current. Two channels offer variable voltage and current up to 30 V/3 A, while third variable channel is rated for 5 V/3 A. Along with programming and readback resolution of 10 mV/1 mA, features include bright VFD, tracking mode, USB-to-TTL interface, and internal settings memory.