Important notes
R&S
®
NGU
15
User Manual 1179.2531.02 ─ 03
against the spring pressure until it locks into place. The use of mended fuses or short
circuiting the fuse holder is prohibited. Resulting damages are not covered by the war-
ranty.
Safe operation
If the instrument is not in use, it must be switched off at the mains switch for safety rea-
sons.
3.5
Limits
The R&S
NGU is equipped with a protective overload feature. The protective overload
feature prevents damage to the instrument and is intended to protect against a possi-
ble electrical shock. The maximum values for the instrument must not be exceeded.
The protection limits are listed on the front panel of the R&S
NGU to ensure the safe
operation of the instrument.
These protection limits must be adhered to:
Specification
Limits
Maximum output voltage
20.05 VDC
Maximum output current
8.01 A (<= 6 V)
3.01 A (> 6 V)
Maximum voltage against earth
250 V peak
Maximum counter-voltage (same polarity)
20 V
Maximum reverse voltage (opposite polarity)
0.5 V (R&S NGU 201)
20 V (R&S NGU 401)
Maximum reverse current sink current
8.01 A
Power supply
100 VAC, 115 VAC or 230 VAC (tolerance
±
10 %)
Frequency
50 Hz / 60 Hz
Maximum power output
60 W (R&S NGU201, R&S NGU401)
Limits
