Ametek VDS 200Q Series User Manual

AMETEK CTS VDS 200Q Series
Manual for Operation V 1.3.1 26 / 36
4.1.3.
Ri settings
The VDS 200Qxx.2 features a selectable Ri setting from 10 mΩ to 200 mΩ in 10 mΩ steps. “OFF” is
also available for users who prefer to use the minimum source impedance available from the VDS
200Q (approx. 3 mΩ). “OFF” should be used for most testing in accordance to ISO 7637-2, which
defines <10 mΩ.
Users who choose to use this Ri setting should be aware that this mostly manifests itself as a voltage
drop at the DUT as the Ri and the load form a voltage divider. When sense is used together with the
programmable Ri, only the voltage drop of the cables are compensated. Voltage drop due to high Ri
settings are not compensated.
4.1.4.
Sense Lines
Sense lines are provided to compensate for voltage drop of up to 8V through the cables.
Sense lines (see the next section) only compensate for cable voltage drop, and not voltage drop from
the additional Ri resistance as this voltage drop is expected.
Sense lines can be run to the load/DUT using the provided connectors. Pay special attention to the
polarity of the sense lines or damage could result to the VDS 200Q. Also, there is an inherent voltage
drop used by most transient generators, for example when diodes are used for coupling. This cannot
be corrected using sense because firing transient pulses into the sense lines is not supported and can
result in unexpected behavior and/or damage to the VDS 200Q.
CAUTION:
Transient pulses may not be fired into the sense lines. Sense lines may not be used at the DUT
when performing transient immunity testing or unexpected behavior from, and/or damage to
the VDS 200Q can occur.
CAUTION:
Pay special attention to the polarity of the sense lines or damage can occur to the VDS 200Q.
4.1.5.
New Features VDS 200Qxx.2
The VDS 200Qxx.2 supports an expanded test envelope with the following capability. This example uses the
VDS 200Q200.2:
• Voltage range expanded to +80V / -20V
• Up to 250 kHz bandwidth
• Programmable Ri
• Improved linearity
U
PP
f (kHz)
40 V
PP
max
0
(DC)
150
250
Full Signal
Derating at Frequency in Extended Operating Mode

Ametek VDS 200Q Series Specifications

General

Brand	Ametek
Model	VDS 200Q Series
Category	Amplifier
Language	English