Tandberg 3820 Specifications

Model:
Interface:
Capacity (formatted):
Buffer size:
Transfer rate:

TDC3820
SCSI, SCSI-2
525 MBytes (1,000 ft. tape)
256 KBytes with parity
4.8 MBytes/sec. synchronous SCSI
2.4 MBytes/sec. asynchronous
200 KBytes/sec. sustained

TDC 3660
SCSI, SCSI-2
250 MBytes (1,000 ft. tape)
64 KBytes with parity
1.4 MBytes/sec burst
90 KBytes/sec. sustained

Format and Capacity
Write/Read:
Write/Read:
Read Only:

QIC-525, 26 tracks, 20,000 frpi, 16,000 bpi (TDC 3820 only)
QIC-120/150: 15/18 tracks, 12,500 frpi, 10,000 bpi
QIC-24, 9 tracks, 10,000 frpi, 8,000 bpi

System Interface
Supports SCSI and SCSI-2
Asynchronous and synchronous data transfer
Single-ended hardware interfaces

Reliability
hard read error rate:

MTBF:
MTTR:

QIC-525 < 10-11 errors per bit
QIC-24/120/150 < 10-11 errors per bit
>80,000 hours (TDC 3600), > 120,000 hours (TDC 3820)
< 30 minutes

Tape Motion
Speed read/write:

Speed wind/rewind:
Speed variation short term:
Speed variation long term:
Start time:

QIC-525: 120 ips
QIC-24/120/150: 96 ips
120 ips
+/- 6%
+/- 2%
typical 250 ms

Dimensions
Drive format:
Height:
Width:
Depth:

5.25" half height
43mm/1.69 inches
149mm/5.87 inches
216 mm/8.51 inches

Media
Data cartridges:

TDC 3820: DC 6525 or equivalent
TDC 3660: DC 6250 or equivalent

Power Requirements
+5 V excl. bus terminator (typical):
+12 V motor not running (typical):
+12 V motor running (typical):
Total effect standby (typical):
Total effect running (typical):
Voltage variations:

500 mA
50 mA
900 m:
3.1 W
15W
+5 V +/- 5% including 100 mV max ripple
+12 V +/- 10% including 100 mV max ripple

Environmental Specifications
Operating temperature:
Storage temperature:
Relative humidity:

Maximum wet-bulb temperature:
Altitude:

+5° C to +45° C/+41° F to + 113° F
-30° C to +60° C/-22° F to + 140° F
20 - 80% operating
10 - 90% transport
+26° C/+78° F
4,000 m/13,124 feet operating
13,000 m/42,653 feet storage

Special Features

Self-adjusting to variations in media and environmental conditions
Error correction codes: Read-While-Write and Reed-Solomon Level-2 are implemented
"Flash" memory for easy change of firmware

Tandberg 3820 Specifications

Specifications subject to change without notice.