MPD 800 User Manual
32 OMICRON
2.2.5 V-to-AC-adapter
Designated use
Figure 2-17: V-to-AC-adapter
The V-to-AC-adapter is designed to connect the three existing types of OMICRON external quadripoles
to the MPD 800 acquisition unit:
• CPL 542 type 0.5 A
• CPL 542 type 2 A
• CPL 542 type 5 A
The V-to-AC-adapter converts a limited voltage of a voltage source with low impedance to a respective
current which can be handled by the MPD 800 acquisition unit. It can be connected directly into the AC
input channels of an MPD 800 acquisition unit.
Connections
The V-to-AC-adapter has two BNC connectors, a plug and a socket connector respectively. It is
connected to the BNC cable and can be treated as an extension of a BNC cable. It has no flow direction.
► In order to prevent extensive currents in case of an accidental short circuit at the connection cable,
ideally locate the V-to-AC-adapter near the voltage source.
► Make sure that connection cables are as short as possible.
The V-to-AC-adapter consists of a single series resistor (100 kΩ, CAT I) between the two centre
contacts. It offers a voltage range of 140 V which corresponds to a full range output current of 1.4 mA.
Therefore, the ratio is 0.01 mA/V.
DANGER
Death or severe injury caused by high voltage or current
► Always observe the five safety rules (see 1.2.2 "Safety rules" on page 6) before
connecting or integrating the V-to-AC-adapter unit into a system.
DANGER
Death or severe injury caused by high voltage or current
The V-to-AC-adapter is not suitable for reliably checking if a system is electrically live or
energized.
► If readings from the V-to-AC-adapter are used for safety relevant procedures, perform
a double check by an independent measurement device.
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