Modules
Modules are removable cassettes that are placed in the slots of the rack. The SPI-rack has 12 (almost) identical slots (to be specific: they are divided in 4 supply/breakout groups of 3). Each module contains a specific function identified by the code. The modules are identified by a letter-number(-letter) code on the front.
The modules function can be determined by the first letter in the code: source (S–), measure (M–), controller (C–) etc. The second digit in the module code is a digit denoting a module category, and the third position (-) denotes a specific type within that category, usually a letter. For example: the S4g. The ’S’ denotes a source module, the ‘4’ indicates a current source and the ‘g’ a specific module type.
The tables below contain the modules that have been developed specifically for the SPI Rack. For the IVVI rack modules, see: http://qtwork.tudelft.nl/~schouten/ivvi/index-ivvi.htm. The IVVI modules are compatible with the SPI Rack, provided that a IVVI Rack Compatibility module (B1/B2b etc.) is used. For more information, see IVVI Rack Compatibility.
Controller
| Module |
Info |
| C1 - Non-Isolated Controller |
PC directly connected to the SPI Rack. |
| C1b/C2 - Isolated controller |
PC connected to C2 which has a galvanically isolated connection with the C1b. |
Current Source
| Module |
Output Range |
Info |
| S4g - 4 Channel, 18-bit current source |
±50 mA, ±25 mA, +50 mA |
Span adjustable in software. |
Voltage Source
| Module |
Output Range |
Info |
| D5a - 16 Channel, 18-bit DAC |
±4V, ±2V, +4V, (±8V, +8V) |
Span adjustable in software. ±8V and 8V possible with extra power supply. Slow ramp down switch for emergencies. |
| D5b - 8 Channel, 18-bit DAC + microcontroller |
±4V, ±2V, +4V, (±8V, +8V) |
Hardware identical to D5a, with an added high speed ARM Microcontroller. Allows for complex/high speed local control. Can synchronise with D4b modules. |
| S5k - 16 Channel AWG |
|
|
Voltage Measurement
| Voltage Measurement |
Input Range |
Info |
| D4 - 2 Channel, 24-bit ADC |
±4V |
High resolution ADC module. Can be used as an alternative to a Keithley DMM. |
| D4a - 2Channel, 24-bit ADC |
±4V |
Redesign of the D4. Added functionality: can be used as break-out module and can do automatic calibration. Recommended over the D4. |
| D4b - 2 Channel, 24-bit ADC + microcontroller |
±4V |
Hardware identical to D4, with an added high speed ARM Microcontroller. Can run at higher sample rates and store data locally. Can synchronise with a D5b module. In development |
RF
| Module |
Frequency |
Output |
Info |
| S5i - RF Generator |
40 MHz - 4 GHz |
-14 to 20 dbm |
Outputs square wave, needs external filtering |
| F1d - IQ Demodulator |
RF/LO from 40 MHz to 1.4 GHz |
Adjustable 1/3/10 MHz IF output |
Adjustable output gain |
| F1e - IQ Demodulator |
RF/LO from 40 MHz to 1.4 GHz |
Adjustable 200 MHz / 500 MHz IF Output |
In development |
| M2j - Low Noise Amplifier |
40 MHz to 4 GHz |
Variable gain from 40 to 70 dB |
Noise Figure of 1.3dB at maximum gain |
Miscellaneous
| Module |
Info |
| S5t - 10MHz Sync Trigger |
Generates triggers divided from the 10 MHz reference. |
| S5l - Trigger processor |
Two trigger inputs and 4 outputs. Can be configured with different processing functions: splitter, AND, OR etc. |
| U1c - Crosspoint switch-board |
8-input 8-output switch-board - 64 individually-controlled connections for DC. |
| U2 - Cryomux control |
Control module for the cryogenic multiplexer PCB. |
IVVI Rack compatibility
| Module |
Info |
| B1a - Analog Break-in/Break-out |
Basic isolated analog input & output module for interfacing with IVVI modules. |
| B1b - Analog Break-in |
Contains software controlled switches to determine the routing of signals from the frontpanel to the IVVI modules. |
| B1c - Analog Break-in/Break-out |
MCX non-isolated inputs and outputs only. Can not connect to other measurement equipment. |
| B1d - Analog Break-out |
Dual channel isolated outputs. PCB based on IVVI M0a module. |
| B2a - Digital Break-out |
Contains a 2 channel 24-bit ADC. |
| B2b - Digital Break-out |
Contains a 2 channel 24-bit ADC + microcontroller. In hardware identical to the D4b module. |
| B2c - Digital Break-in/Break-out |
Contains 4 internal DAC channels and a dual channel 24-bit ADC. |
| B2d - Ditigal Break-in |
Contains 4 internal DAC channel and 2 isolated inputs. |