Function Description
R&S
®
TS-PSAM
19
User Manual 1142.9878.12 ─ 12
The GTSL libraries DMM and DCPWR make the
DMM_Conf_Ground_Relay
and
DCPWR_Conf_Ground_Relay
functions available for the configuration of the earth
tied operation.
For technical reasons, a component that is not cross-connected (all matrix relays
opened) will automatically be grounded with the corresponding ground relay. It will be
automatically opened again, if the component is configured as floating, before a new
cross-connection to the analog bus wires is performed.
The
rspsam_DisconnectAll
function does not open the ground relays.
Configuration Relays
The configuration relays connect MU and DCS for the resistance measurement. These
relays will be automatically controlled from the device driver software, depending on
the measurement function and the measurements range. The
rspsam_dmc_Select
function should be used only in exceptional cases
5.1.2
Voltage and current measurement unit (MU)
(MU = Measurement Unit)
AC and DC voltages and currents are measured with the MU. Both MU inputs can be
switched to the local 8-wire analog bus via the full matrix.
DC voltage measurement
The floating DC voltage measurement unit has programmable pre-filtering and adjusta-
ble input voltage ranges. Analog/Digital conversion is performed with a serial A/D con-
verter whose output data are stored in a FIFO memory.
Low Pass Filter (-3 dB): (MU Filter)
4 ranges, 400 Hz, 4 kHz, 40 kHz, 100 kHz (the
same applied for current measurements)
Overvoltage protection:
200 V max.
Analog bandwidth (-3 dB):
>500 kHz
A/D converter:
Resolution: 16-bit sampling rate: 200 kHz max.
FIFO:
8 k
AC voltage measurement
AC voltage is measured using an RMS-to-DC converter. AC voltage that is present at
the inputs is converted to a DC output voltage that is proportional to the real RMS
value of the input signal. The converted DC output voltage is processed by the A/D
converter.
As an alternative to the RMS-to-DC converter, you can measure the waveform in DC
mode with following analysis to find the actual quantity value. The
rspsam_ConfigureRmsMethod
and
rspsam_ConfigureRmsEval
functions are
available.
Function description of the R&S TS-PSAM Module
