Rohde & Schwarz Inc TMU925 用户手册

System Manual 2600.5423.02 ─ 01

The entire signal gain process takes place on the amplifier board (module A2). It goes
though the following steps in the preamplifier and driver.

● The RF input signal passes from the amplifier input X10 on the rear panel of the

instrument along the RF line W10 and into the preamplifier, which is under an
RF

‑shielded cover.

● In the preamplifier, the signal passes through the following components in sequence:

–

Amplitude regulator

–

Small

‑signal amplifier

–

Phase regulator

● This is followed by an LDMOS transistor stage (BLF642, single

‑ended, A mode) as

a preliminary driver.

Design and Function R&S PMU901