MRL Product Guide

Overview: There are seven product parameters that uniquely specify the MRL product SKU

Tape Width: We sell tapes in all four major formats: ¼", ½", 1", and 2".
Playback Speed: We sell single speed tapes with all four standard speeds (3¾, 7½, 15 & 30 ips), and also two dual-speed options (<7½|15> ips and <15|30> ips).
Equalization: Typically, either IEC or NAB for 7½ and 15 ips; and AES for 30 ips. Check your owner's manual.
Reference Fluxivity: This determines, in effect, how "hot" 0dB is. We recommend 250nWb/m for ATR, and RTM SM911 tape; 355 nWb/m for RTM SM900 tape.
Fringing Compensation: Compensates for frequency response aberrations when a full-track recording is played back on narrow tracks. Typically, disabled for ¼" tapes, and enabled for ½", 1", and 2"
Duration: Self-explanatory. There are typically 2 or 3 options.
Test Signals: We offer the standard multifrequency program (13 frequencies); and also various short-format programs (2-6 frequencies depending on the model).
We recommend the multifrequency tape for maintenance and repair technicians and professional calibrations. For recording engineers and enthusiasts the short program tapes are generally a cost-effective alternative when you just set levels and check equalization.

Tape Width

Options	SKU Code	SKU v1 Example	SKU v2 Example
¼"	2	21J205	243-101-480-113
½"	3	31J219	343-103-482-127
1"	4	41J216	443-103-482-139
2"	5	51J213	543-103-482-141

Playback Speed(s)

*99 indicates dual-speed, but not the actual speeds. The second triplet specifies the speeds, and also the test frequencies.
Options [in/sec]	SKU v1 Code	SKU v1 Example	SKU v2 Code	SKU v2 Example
3¾	F	21F201-A	2	221-102-480-110
7½	T	21T204	3	233-102-480-113
15	J	21J205	4	243-101-480-113
30	L	21L221	5	251-101-480-114
<7½ \| 15>	n/a	n/a	99*	299-008-480-114
<15 \| 30>	n/a	n/a	99*	299-007-480-117

Reference Fluxivity

*Used with most modern tapes (eg: ATR456, RTM911).
^§Typically used with RTM900 tape.
Options [nWb/m]	SKU v1 Code	SKU v1 Example	SKU v2 Code	SKU v2 Example
200	1	21J105	46	243-101-460-111
250	2	21J205	48	243-101-480-113
280	3	21J305	49	243-101-490-114
355^*	4	21J405	51	243-101-510-119
500^§	5	21J505	54	243-101-540-112

Test Signals

*Used with most modern tapes (eg: ATR456, RTM911).
^§Typically used with RTM900 tape.
Options [nWb/m]	SKU v1 Code	SKU v1 Example	SKU v2 Code	SKU v2 Example
200	1	21J105	46	243-101-460-111
250	2	21J205	48	243-101-480-113
280	3	21J305	49	243-101-490-114
355^*	4	21J405	51	243-101-510-119
500^§	5	21J505	54	243-101-540-112

Equalization

*Used with most modern tapes (eg: ATR456, RTM911).
^§Typically used with RTM900 tape.
Options [nWb/m]	SKU v1 Code	SKU v1 Example	SKU v2 Code	SKU v2 Example
200	1	21J105	46	243-101-460-111
250	2	21J205	48	243-101-480-113
280	3	21J305	49	243-101-490-114
355^*	4	21J405	51	243-101-510-119
500^§	5	21J505	54	243-101-540-112

Fringing Compensation

Typically, we apply fringing compensation to ½", 1", and 2" tapes, but not to ¼".
Options [nWb/m]	SKU v1 Code	SKU v1 Example	SKU v2 Code	SKU v2 Example
Disabled	n/a	n/a	0	243-101-480-113
Enabled	n/a	n/a	2	243-101-482-111

Duration

*Used with most modern tapes (eg: ATR456, RTM911).
^§Typically used with RTM900 tape.
Options [nWb/m]	SKU v1 Code	SKU v1 Example	SKU v2 Code	SKU v2 Example
200	1	21J105	46	243-101-460-111
250	2	21J205	48	243-101-480-113
280	3	21J305	49	243-101-490-114
355^*	4	21J405	51	243-101-510-119
500^§	5	21J505	54	243-101-540-112