HPPR/2 MRI ADM-CRP Module
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11.2.5 Technical Data
Number of channels: 4
Input Signals:
RGP_HPPR, INTRLVE_INCR: RS-422 differential
AD-CTRL(1:4)~: +3.3V LVTTL, +5V
compatible
Wobble Preamplifier:
RF frequency ranges: 200..400 and 500..750 MHz
Tuning Reference: internal, 50 Ohm
Tuning Gain: TUNING IN to RF OUT -20 dB
Input VSWR WOBBLE CH1-4: < 1.1
CRP TXSW bias current WOBBLE CH1-4
output:
same as HPLNA 1H
TMD Driver:
Matching voltage range (symmetric): tune mode ± 0..15 V
Matching current: detune mode ± 70 mA
Tuning voltage range (symmetric): tune mode ± 0..15 V
Tuning voltage: detune mode ± 24 V
Detune switching time: (TMD driver and wobble
selector)
< 5 µs
Number of detune control pulse: OR combinable
for each channel
4
11.3 Troubleshooting
The ADM-CRP can only be replaced as a whole unit (FRU). There are no serviceable parts.
If an FRU needs to be replaced, contact your Bruker Service Representative.
Detected failures are reported with event messages. Event messages are displayed on the
TopSpin screen and can be viewed on the Service Web pages
General information on trouble shooting, error handling and failure reporting is available in
chapter Troubleshooting [}75].
11.3.1 Diagnostics
Service Web pages provide some low level access to the hardware that may help to
diagnose hardware problems.
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