## Resistor value calculator
Use this to calculate the attenuator resistor values to use with your δ1 board. You specify the following inputs: **Relays**- The number of relays you will install (
*5..8*). **Step size**- The attenuation per step (
*1.0dB*,*0.5dB*or*0.1dB*). **Z**_{att}- The attenuator input impedance in KΩ, as seen from the source.
This field accepts a positive number in simple integer, decimal notation or scientific notation. **Z**_{load}- The load impedance in KΩ, as seen by the attenuator. This is the input impedance of the next amplifier stage.
(e.g., For the α20 , β22 or M³ amplifiers, it is the summed resistance of R1 + R2 on those boards). This field accepts a positive number in simple integer, decimal notation or scientific notation. **Resistor standard**- The EIA standard resistor values to use, as follows:
- E48: 2% tolerance
- E96: 1% tolerance
- E192: 0.5%, 0.25%, 0.1% or better tolerance
**Output format**- The calculator's output display format (
*graphic*or*table*)
RS and RP corresponding to each relay stage, as well as for the RT resistor. It also displays the real attenuation (A) and impedance (Z) of each stage, assuming perfect resistor tolerances.If the RT resistor does not appear in the calculator's output area, then you should leave it unpopulated.Resistor calculator program rcalc.cgi 1.12 by AMB, using an AMB-modified backend by LinuxWorks. Main: δ1 Main | Prev: Parts list | Next: Instructions |