Hi,
from a BLARH100 900 MHz User manual:
• Safety features (OVERDRIVE, PULSE WIDTH, DUTY CYCLE) which will
temporarily disable the amplifier whenever output power is above a specified limit.
Each amplifier has on board information stored in the RS485 Interface Board regarding
amplifier type, max. Duty Cycle, max. Pulse Width etc. These parameters can be changed
by software if necessary using the ‘edacb’ command.
• The amplifiers are controlled by the ACB-X (Amplifier Control Board
Extended) via an RS485 type link (SBSB2 / tty20 Bus). Individual amplifiers can be addressed.
Hardware address codes are set via a HEX. switch located on the amplifier front panel. Read
and write access to the BLAD Control board is possible via the ACB-X Board.
• Precise software timing control of the amplifier blanking pulses
(BLKTR1..15) via the „edscon“ table.
The blanking pulses (BLKTR 1... 15) are active low TTL level and generated
by the SGU. They are transmitted to the PSD via the backplane and then to the amplifier
via external cabling. They are easily measured at the BNC connections on the amplifier
front panel. Which blanking pulse is required for which amplifier will depend upon which
router output provides the RF amplifier input. Thus an amplifier channel connected to
router output RO1 will be blanked by BLKTR1. An amplifier channel connected to router
output RO3 will be blanked by BLKTR3 etc. The source of an individual BLKTR signal will
be the SGU on which the corresponding RF signal has been generated. This ensures coherence
between the SGU blanking and the external amplifier blanking. The timing of the
BLKTR[1... 15] pulses can be adjusted with the „edscon“ table.
Best regards
Bert
> Am 16.04.2024 um 20:59 schrieb Joseph Sachleben <jsachleben_at_uchicago.edu>:
>
> Hi All,
>
> I’m trying to control a an old Bruker BLARH100 500-600 MHz Amplifier
> with my Tecmag Redstone. I can’t find a manual for it however. I found
> the manual that is in the Bash documentation that shows the block diagrams of
> the circuits, but I can’t find a users manual that tells me if it is
> using positive or negative logic for the blanking. What the difference is=
> between the high, medium, and low inputs and outputs on the amp? What's the
> function of the RS486 port is?
>
> Any help with documentation would be greatly useful.
>
> Thanks,
>
> Joe S
>
>
> Joseph R. Sachleben, Ph. D.
> Technical Director Biomolecular NMR Facility
> The Division of Biological Sciences
> 929 E. 57th St.
> Chicago, IL 60637
>
> (773)834-9866
> jsachleben_at_uchicago.edu
>
>
Magnetic resonance equipment, service, training & more
Selling & buying used NMR equipment (all vendors)
Dr. rer. nat. Bert Heise
Owner, Applications Scientist
Spin-Doc Bert Heise
Kiefernweg 13
58239 Schwerte
Germany
Mobile: +49 171 5135315
Email: bert.heise_at_spin-doc.net
Web: http://www.spin-doc.net
Representing:
Stelar Fast Field Cycling NMR Relaxometers (
http://www.stelar.it)
MestreLab NMR Software (
http://www.mestrelab.com)
Barthel HF Amplifiers (
http://www.barthel-hf.de)
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#1149): https://urldefense.com/v3/__https://ammrl.groups=
.io/g/main/message/1149__;!!PvDODwlR4mBZyAb0!QyKT0Ird_n8a6NzyQnhNIGU26FBN4B=
y7U61DEvWgA2Rl0Q9YLVCe85byUnQz6aH2m6te5Uwg35LhXaQkmvDLaQ$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/105563537=
/7559972__;!!PvDODwlR4mBZyAb0!QyKT0Ird_n8a6NzyQnhNIGU26FBN4By7U61DEvWgA2Rl0=
Q9YLVCe85byUnQz6aH2m6te5Uwg35LhXaQaTakCtA$
Group Owner: main+owner_at_ammrl.groups.io
Received on Tue Apr 16 2024 - 15:02:03 MST