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ROBERTS GORDON
CORAYVAC
FIGURE 10: Hybrid Network Configuration
R
T
R
R
R
T
C: Controller
Recommended MS/TP cable specification
Description
Conductor
Insulation
Color Code
Twist Lay
Shielding
Jacket
DC Resistance
Capacitance
Characteristic Impedance
Weight
UL Temperature Rating
Voltage
Listing
18
®
M
H
C
C
ODULATING
EATING
ONTROL
Segment
T
C
C
C
R
T
C
C
C
T
C
C
C
T
C
C
C
T
C
C
C
R: Repeater
Single twisted pair, low capacitance (12pF), CL2P, 22 AWG (7x30), TC foam FEP,
22 AWG (7x30) stranded copper (tin plated) 0.030 in. (0.762 mm) O.D.
NOTE 24 AWG can be used for segments <200 ft. (60.7 m).
Foamed FEP 0.015 in. (0.381 mm) wall 0.060 in. (1.524 mm) O.D.
2 in. (50.8 mm) lay on pair 6 twists/foot (20 twists/meter) nominal
Aluminum/Mylar shield with 24 AWG (7x32) TC drain wire
SmokeGard (SmokeGard PVC) 0.021 in. (0.5334 mm) wall 0.175 in. (4.445 mm)
Halar (E-CTFE) 0.010 in. (0.254 mm) wall 0.144 in. (3.6576 mm) O.D.
12.5 pF/ft (41 pF/meter) nominal conductor to conductor
I
M
ONTROLLER
NSTALLATION
ANUAL
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
Segment
C
C
C
C
C
T: BT485 Terminating Resistor
plenum rated cable
Black/White
O.D.
15.2 Ohms/1000' (50 Ohms/km) nominal
100 Ohms nominal
12 lb./1000' (17.9 kg/km)
SmokeGard 167°F (75°C)
Halar -40 to 302°F (-40 to 150°C)
300 Vac, power limited
UL: NEC CL2P, or better
Segment
R
C
T
T
C
C
C
C
T
C
C
C
T
C
C
C
T
C
R
C
C
C
T
C
C
C
C
Segment
C
C
T
T
C
T
C
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Troubleshooting
