tender for purchase electronics lab equipment , multi output regulated dc power supply: , specification:  input voltage : 230v ±10% ac 50 hz output voltage current : (a) 0-30v dc/2a, (b) ± 15 vdc/1a, (c) 0 - 5v dc / 5a  load regulation (cv) : 0.05 % ± 3mv from no load to full load  load regulation (cc) : 0.05% ±1 ma from no load to full load  line regulation (cv) : 0.01 % ±3mv for 10% variation input voltage  line regulation (cc) : 0.01% ±1 ma for 10% variation input voltage  operating mode : independent and tracking mode  ripple : less than 1 mv  meter : two digital meters to monitor the output voltage current of output a, one digital meter to monitor the output voltage of output b , selectable by switch, one digital meter to monitor the voltage of output c  protection : against short circuit and overload warranty should have 3 - years warranty. , cathode ray oscilloscope:  dual trace dual channel oscilloscope  bandwidth: 30mhz flexible triggering: ch1, ch2, ext, alt  tv-h/tv-v sync & trigger lock vertical deflection: 5mv/div to 20v/div in factor 1-2-5 sequence in 12 steps  rising time: 18ns  maximum input voltage: 400v (dc +acp-p)  sweep: 0.1 μs/div - 0.2 s/div (20 steps)  magnification: ×10  x-y mode supported  calibration: 0.5v square wave @ 1khz  crt display: 8 × 10 cm warranty: should have 3 - years warranty , arbitrary function generator:  frequnecy range 0.1hz-10mhz  waveforms sine wave, square wave, triangle wave, saw tooth(±) and pulse(±)  square-wave rise time: 35 ns  sine distortion: 1% (10 hz - 100 khz)  frequency response: ±0.5 db (≤100 khz), ±1 db (≤5 mhz)  ttl/cmos output: 0.4v low, ≥3.5v high  output: impedance: 50ω±10%  amplitude: ≥20vp-p (no load)  attenuation : 20db /40db  dc bias 0-±10v (continuously adjustable)  symmetry adjustemnt: 90:10-10:90  vcf input 0-5v  frequency meter 1hz-20mhz, error 0.003%  input max: 150v (ac+dc)  power: 220v ±10%, 50 hz ±2 hz warranty: should have 3 - years warranty.