
Function Description
R&S
®
TS-PSU12
22
User Manual 1504.4524.12 ─ 05
5.3.3 Monitor output
The R&S TS-PSU12 has two pins on the X10 front connector that pass the input volt-
age of the ADC to the output through a buffer. In this way, the selected measurement
source can be recorded using an external oscilloscope or digitizer. The voltages and
value range on these monitor outputs (CHx_MHI and CHx_MLO) are as follow:
Table 5-1: Voltages and value range of monitor outputs
Selected source
Source signal for 2.50V
full scale of monitor voltage
Conversion factor
Force voltage
52.7 V
Source signal in V = 21.08 * moni-
tor voltage in V
Sense voltage
52.7 V
Source signal in V = 21.08 * moni-
tor voltage in V
Current 10 mA
12,4 mA
Source current in mA = 4,97 *
monitor voltage in V
Current 100 mA
110 mA
Source current in mA = 43,9 *
monitor voltage in V
Current 500 mA
932 mA
Source current in A = 0,373 *
monitor voltage in V
The monitor output signal must be measured differentially at high impedance. 10 k
Ω
is
built in internally before CHx_MHI and CHx_MLO each as a protective mechanism
against short-circuits.
Signals CHx_MHI / CHx_MLO must be measured floating against the force or sense
potential. Depending on the quadrant of the source, the potential against CHx_MLO
approximates CHx_LO (output voltage positive) or CHx_HI (output voltage negative).
This means the common mode voltage on CHx_MLO against CHx_LO is approxi-
mately 0 V to approximately -12 V.
5.4 Relay matrix
The relay matrix implemented in the Power Supply/Load Module 12V R&S TS-PSU12
is used for flexible connection and simple wiring of test objects. Its layout is as follows:
Relay matrix