Rane LT 22 User manual

Data Sheet-1
LT 22
LINE TRANSFORMER
Features
• +24 dBu Levels
• 2 Channels
• Nickel Core “80” Ni Transformers
• Wide Bandwidth
• Low Distortion
• Euroblock Connectors
General Description
e LT 22 is a line-level two channel
isolation box. Each channel contains a low
distortion, high output, wide bandwidth,
nickel-core output transformer.
e LT 22 is an easy and convenient
way to add output transformers to any line-
level equipment. e Inputs and Outputs
may be configured as balanced or unbal-
anced as required.
e LT 22 is the quick and afford-
able answer to all jobs requiring output
balancing or isolation transformers. e
Euroblock connections provide maximum
installation flexibility and cost savings.
DATA SHEET / MANUAL
WEAR PARTS: is product contains no wear parts.
Parameter Specication Limit Units Conditions/Comments
Transformer Construction Nickel Core Bobbin Wound Grade “80” Ni
Turns Ratio 1:1 Primary to secondary
40 Hz Max Output Level +24 0.5dB dBu 1% THD point
20 Hz Max Output Level +18.5 0.5dB dBu 1% THD point
Insertion Loss 0.5 0.1 dB
DC Resistance 200 10% Ω Primary and secondary
Frequency Response 20-20 kHz ±1 dB +4 dBu
Bandwidth 60 kHz -3 dB Half power frequency
THD + Noise less than .005 .001 % +20 dBu; 100 Hz-20 kHz
less than 0.15 .05 % +20 dBu; 30-100 Hz
Unit: Agency Listing UL/CSA Exempt Class 2 equipment
CE-EMC Exempt passive device
CE-Safety Exempt extra low voltage device
Unit: Construction All Steel
..........Size 1.65"H x 5.1"W x 4.25"D (4.2 cm x 13 cm x 10.8 cm)
..........Weight 1 lb (.45 kg)
Shipping: Size 3.6" x 11.75" x 7.2" (9.5 cm x 30 cm x 18 cm)
..........Weight 2 lb (.9 kg)
All specifications measured with 25 Ω source and 10 kΩ load 0 dBu=0.775 volts
4.225"
0.15"
2.5"
5.1"
0.775"
0.35"
1.636"
OUTPUT INPUT OUTPUT
INPUT
LINE
TRANSFORMER
RANE CORP.
MADE IN U.S.A.
ACN 001 345 482
12
LT 22
–+ –+ –+ –+

Data Sheet-2
LT 22
LINE TRANSFORMER
All features & specifications subject to change without notice DOC 102931
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 USA TEL [phone] FAX [phone] WEB www.rane.com
SchematicApplication Information
e LT 22 fills the need of adding output isolation balanc-
ing transformers to any line-level equipment. It is a convenient
alternative to the expense and clutter of adding loose or in-line
transformers. e steel enclosure with mounting flanges provide
an easy installation anywhere.
Wiring
No special instructions are necessary when wiring the LT 22. Use
high-quality wire and choose the grounding method appropriate
for the application. Inputs or outputs may be balanced or unbal-
anced in any combination. Connect unbalanced signal to the (+)
terminal and shields to the (–) terminal.
Signal Direction
is is a 1:1 isolation transformer with no level changes. Signal
can be isolated either direction through this unit.
Chassis Grounding
#6-32 screw terminals are provided for chassis grounding purpos-
es. Good practice dictates earth-grounding the LT 22. If ground-
ing integrity is in doubt, run a wire from one of these screws to a
known earth ground.
2 9
114
T1
XFMR LINE OUT
2 9
114
T2
XFMR LINE OUT
7
8
9
6
10
2
3
4
1
5
11
12
EURO
+IN 2
+IN 1
–IN 2
–IN 1
+OUT 2
+OUT 1
–OUT 2
–OUT 1
Channel 2
Channel 1