3.1 Wideline Solids Module
01-999162-00 C0402 VNMR 6.1C User Guide: Solid-State NMR
48
Both amplifiers are linear, with gating provided for noise blanking. Operational details for
the high-power amplifiers are included in the manuals provided by the manufacturers of the
amplifiers. These should be read before operating the amplifier.
AR Linear Amplifier
The AR linear amplifier is gated off whenever the receiver is gated on. A time of at least 30
µs is required for the bias to come on fully and thus for the amplifier to provide full output
power. Allowance for this delay must be made in any pulse sequence programming, using
rof1. The amplifier can be driven in either of two modes:
• Continuous wave (CW)—the maximum power output is limited to 200 W but the duty
cycle can be 100%
• Pulsed—the maximum power output is 1 kW but the maximum pulse width is 8 ms
with a maximum duty cycle of 10%.
The amplifier is fully protected against thermal overload, excessive duty cycle, and
excessive pulse width. Status lights on the front panel and switches for this unit are visible
by opening the front door of the third cabinet.
Figure 16. Solids Cabinet Layout, Open Front View
Status panel
Sorensen Solids
VT controller (optional)
Low band 1 kW
amplifier
Low band
power supply
High band 1 kW
amplifier
High band
EHT power supply
To Next Page
Loading...
