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FAQ
What types of SCSI cards can be used to interface my PC to the Heim recorder?
What is the meaning when a BITRATE message is displayed?
How does the analog triggering work?
Which AIT tapes can be used?
What software applications control Heim recorders and/or read the Heim data format?
What software types control or read the IRIG106 Chapter 10 Data Format?
What types of SCSI cards can be used to interface my PC to the Heim recorder?
We advised the Adaptec 1480 Slim SCSI for use with laptops. It is an 8-bit wide single-ended SCSI board. When connecting to an A480, since it is fitted with a 16-bit SCSI connector, the user needs to insert a SCSI-2 to SCSI-3 Active Adapter on the A480 side to terminate the 8 lines not in use. We advise the Adaptec 19160 for use with desktop PC and all recorders except the A480 and DiSC6. It is a fast 16-bit wide single-ended SCSI board. When connecting to a D20i/ix or D20d, the SCSI negotiation has to be set to 8 bit in the SCSI board BIOS. This would not be done automatically by the PC since the AIT and DLT7000 tape decks are identified as wide SCSI devices. We advise the Adaptec 29160 for use with desktop PC and the A480 or DiSC6. It is a fast 16-bit wide single-ended SCSI board. Note that it is strongly recommended to download and install the latest driver of the 1480, 19160 and 29160 boards and the latest BIOS version of the 19160 and 29160 boards.
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What is the meaning when a BITRATE message is displayed?
The BITRATE message is displayed when the recorders total sampling rate for all installed channels has been exceeded. This message should not be ignored otherwise subsequent recordings will be suspect or not even valid. The aggregate recording rate can be viewed from the front panel in the Mode- Diagnostics menu. I.e. TOT display. In order to lower this value either channels can be disabled or sampling rates decreased.
Our DataRec-2 units have a not to exceed limit of 4Mbits/sec or 125Khz bandwidth. The Disc16 front end has a not to exceed limit of 200KHz or 6.4Mbits/sec. The D12 has a not to exceed limit of 12 Mbits/sec or 375KHz bandwidth. The Datarec3 family including the D20, A480, GSR20 and Disc6 have a not to exceed limit of 20Mbits/sec or 640KHz bandwidth. The GSR200 AND D200 recorders have a not to exceed limit of 160-240Mbits/sec depending upon installed media configuration.
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How does the analog triggering work?
Analog triggering is available in all A series products. It is used to start recordings from a specified input channel or any input channel. A threshold level (percentage of full scale) and record duration after trigger are both user selectable. This is how it works: an incoming signal is introduced and crosses the threshold value which starts a recording and continues recording up to the user specified time. If this signal is still above the threshold setting at the end of the specified record time the unit continues recording. If the incoming signal drops below the threshold level then the recording stops after the specified time. When the triggering mode has been enabled the user must press the REC (record) key to ready the system. Thereafter, the display reads "waiting for trigger"
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Which AIT tapes can be used?
- Tapes for AIT-1 drives: SDX1-25C (25 GB), SDX1-35C (35 GB)
- Tapes for AIT-2 drives: SDX2-36C (36 GB), SDX2-50C (50 GB)
- Tapes for AIT-3 drives: SDX 3-100C (100 GB)
The SDX1-25C and the SDX2-36C are to be preferred when the application doesn't require longer recording capacity.
AIT-1 tapes can only be written with the AIT-1 format. AIT-2 tapes can only be written with the AIT-2 format. AIT-3 tapes can only be written with the AIT-3 format. In theory, the AIT-3 drive can record AIT1 and AIT2 tapes. The AIT-2 drive can record AIT1 tapes. However, these tapes have proven to be difficult to replay by AIT-1 or AIT-2 drives. So we advise to record an AITx tape only with an AIT-x drive. On the replay side, the AIT-3 drive can replay reliably AIT-1 and AIT-2 tapes. The AIT-2 drive can replay reliably AIT-1 tapes.
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What software types control or read the Heim data format?
LMS CADA-X NVH Workstation A Series + A480 and DiSC6 Connection only to the tape. No remote control capacity.
SDRC/MTS IDEAS NVH Workstation and NT A Series + A480 and DiSC6 Front-end & tape connections.
Mueller BBM Pak NVH Workstation A Series Connection only to the tape.
IDS nVision NVH 95/98/NT A Series Front-end & tape connections.
Prosig DATS NVH 95/98/NT A Series +A480 and DiSC6 Front-end & tape connection.
IMT NVH (Gear box) NT A80 & DiSC-16 Front-end connection.
Head Acoustics Artemis Acoustics NT A Series + A480 and DiSC6 Front-end & tape connections.
Akustik Technologie Goettingen Si++ Acoustics Workstation and NT A Series + A480 and DiSC6 Front-end & tape connections.
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What software types control or read the IRIG106 Chapter 10 Data Format?
JDA Common Mission Debrief Program (CMDP)
EMC ILIAD
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