Cable-Tronix CT-FSAM550 User manual

INSTALLATION MANUAL
CT-FSAM550
Agile Audio/Video Modulator
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PACKAGE CONTENTS
This package contains:
One CT-FSAM550 Agile Audio/Video Modulator
One CT-FSAM550 Installation Manual
PRODUCT DESCRIPTION
The CT-FSAM550 is a professional grade, SAW filtered, all solid-state frequency agile
audio/video modulator providing 57 dBmV output over 82 channels from CATV channel 2 to 78
and 95 to 99 from 54 to 550 MHz. This modulator features composite audio-video IF loop for
compatibility with encoders and video-override applications. Front panel DIP-switch controlled
PLL allows easy channel selection and drift-free channel stability.
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SPECIFICATIONS
CT-FSAM550
Audio/Video Modulator Specifications (Typical)
RF
1. Video Channels 82 channels (2-78, 95-99)
2. Frequency Range 54 to 550 MHz
3. Output Level 45 to 57 dBmV, ± 2 dBmV
4. Output Impedance 75 Ohms
5. Output Return Loss -15 dB
6.Output Level Range 15 dB (Continuously Adjustable)
7.A/V Carrier Ratio Control Adjustable -7 to -22 dB below visual carrier
8.Spurious Output -60 dB below video carrier with A/V ratio @-15dB
9.Frequency Accuracy/Stability ±5kHz in aeronautical band
10. C/N In-Band >57 dB
11. C/N Out-of-Band >68 dB
12. Fv+6 MHz (Upper Adj. Reject) > 60 dBc
13. Fv-1.5 MHz (Lower Adj. Reject) 60 dBc
VIDEO
1.Video Input Level 1 Vp-p @87.5% Modulation
2. Input Type Clamped video neg. synch
3. Video S/N -60 dB minimum (weighted)
4. Input Level Range 0.5 V to 1.5 V p-p
5. Frequency Response ±0.8 dB 30 Hz to 4.2 MHz
6.Differential Gain <5%(10 to 90% APL)
7.Differential Phase <5˚(10 to 90% APL)
8. Chrominance luminance delay Meets FCC group delay predistortion requirements for
color transmission
9. Hum and Noise -60 dB @ 87.5 modulation
AUDIO
1.Baseband Input Level 0.5 Vp-p for 25 kHz Peak Deviation
2.Baseband Input Impedance 600 Ohms Unbalanced
3. Pre-emphasis 75 microseconds
4. Flatness 1.5 dB max. 50 Hz to 15 kHz
GENERAL
1.Power Input Range 95 V ~ 130 VAC, 60 Hz
2.Operating Temperature 32 ˚F ~ 122 ˚F
3.Connectors All "F" Type
MECHANICAL
1.Dimensions 19" (W) x 1-3/4" (H) x 9 3/8" (D)
2.Weight 3.8 Ibs.
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INSTALLATION AND OPERATION
NOTE TO SYSTEM INSTALLER
System installer must adhere to Article 820-40 of the NEC that
provides guidelines for proper grounding and specifies that the
cable ground shall be connected to the grounding system of the
building, as close to the point of cable entry as practical.
1. UNPACKING and HANDLING
Each unit is shipped with all equipment assembled, and factory tested.
Ensure that all accessories are removed from the container before discarding packing
material
2. MECHANICAL INSPECTION
Inspect the front and rear of the equipment for shipping damage. Make sure the equipment is
clean, and no connectors are broken, damaged, or loose. If equipment appears to be
damaged or defective please contact us at 1-610-429-1511 for assistance.
3. PRODUCT DIAGRAM
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FRONT PANEL
1 Power Power-On indicator light.
2 Video/Audio Ratio Adjustment Used to set level of audio carrier below video carrier.
3 Audio Modulation LED Indicates aural over modulation level when lit.
4 Audio Modulation Adjustment Adjusts for 25 kHz peak deviation.
5 Video Modulation Adjustment Adjusts depth of modulation when video level is
greater than 1.5Vp-p terminated signal.
6 Video Modulation LED Indicates video over modulation when lit.
7 Channel Select DIP switches are used to select desired channel.
8 RF Output Adjust Used to set output level.
9 Output Test Port The input signal is tapped down –30dB for monitoring.
Test port must be terminated when not in use.
BACK PANEL
1 RF Output The modulated output signal is available for
distribution from the F-connector port.
2 I.F. Input Input from I.F. scrambler or I.F. output.
3 I.F. Output To I.F. input or to scrambling device.
4 Video Input F-connector accepts video signal from a video source
such as a satellite receiver, demodulator, or DVD
player.
5 Audio Input F-connector accepts audio signal from a video source
such as a satellite receiver, demodulator, or DVD
player.
6 Convenience Outlet Allows looping of power among units. 117 VAC type.
7 Power Cord For 120VAC, 60Hz
4. HARDWARE CONNECTIONS
a. The CT-FSAM550 is designed for installation in a standard 19” EIA rack.
b. Connect a jumper cable between the I.F. Output port and the I.F. Input port if no
scrambling or EAS system is being used.
c. Connect a 75ohm coaxial cable with F-connectors from the video source’s Audio
Output port to the CT-FSAM550’s Audio Input port.
d. Connect a 75ohm coaxial cable with F-connectors from the video source’s Video
Output port to the CT-FSAM550’s Video Input port.
e. Connect a 75ohm coaxial cable with F-connectors from the CT-FSAM550’s RF
Output port to the headend combiner.
f. Connect the CT-FSAM550 to an appropriate power source capable of powering this
device. Be certain that power source is capable of handling the load if the CT-
FSAM550 and other equipment are being powered by it. The use of a surge protector
is highly recommended. Product warranty does not cover surge damages.
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5. CHANNEL SELECTION
Select the desired output channel by setting the DIP switches according to the chart below.
6. ADJUSTMENT
a. After installation and completing all hardware connections power the unit and wait 20
minutes before making the following adjustments.
b. For testing purposes no more than 15dB from the RF Output should be going to a
TV or RF input monitor. Use an attenuator to reduce the signal level if testing with an
RF Input monitor. Individual CT-FSAM550 setup and level settings can be tested
from the RF Output port. However, system level testing should be done from the
combiner.
c. With a nominal 1 Vp-p video source connected, adjust the VIDEO MODULATION
ADJUSTMENT control. The video AGC circuit will automatically set the unit for
87.5% modulation over an input level of 0.5 to 1.5 volts peak-to-peak. If the video
input is greater than 1.5Vp-p, adjust the VIDEO MODULATION LEVEL for correct
percentage of modulation (87.5%). If test equipment is not available then adjust for
proper picture contrast when viewed on a TV monitor and compare with known Off-
Air broadcast picture quality.
d. With audio source connected, adjust AUDIO MODULATION ADJUSTMENT control
on the front panel for 25 KHz deviation using a precision demodulator and audio
meter. Instead of an audio modulation meter, use a TV set and adjust for equal
volume as compared to a known Off-Air broadcast. Monitor for a few minutes to
assure the maximum volume does not over modulate, which can cause picture
distortion.
e. The aural carrier level should be adjusted to 15 dB below the level of the video carrier
by slowly rotation the VIDEO AUDIO RATIO ADJUSTMENT.
f. During field maintenance of the headend the CT-FSAM550’s Output Test port can
be used for taking unit measurements. However, note the output from the port is
padded down -30 dB and must be taken into consideration when adjusting levels.
7. TROUBLESHOOTING
a. Ensure you are using quality multiple shielded cables with quality radial or
compression F-connectors.
b. Ensure the F-connector’s center conductor is making solid contact with the CT-
FSAM550’s Video Input, Audio Input, and RF Output ports.
c. If the CT-FSAM550 is receiving power but no signal, check to be sure the video
and/or audio input cables are securely connected with their respective Video Output
and Audio Output ports on the video source and the Video Input and Audio Input
ports on the CT-FSAM550. Also ensure the cable is securely connected at the CT-
FSAM550’s RF Output port and the combiner’s input ports.
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d. When taking measurements it is always best to use a quality signal level meter. For
initial individual CT-FSAM550 setup measurements may be taken from the unit’s RF
Output port. System level measurements, however, should be taken from the
combiner’s output. For field maintenance, the CT-FSAM550’s Output Test port may
be used. However, note that port is padded down -30dB that must be taken into
consideration when determining individual unit level settings and output.
e. Further troubleshooting assistance can be found on-line at
www.northamericancable.com and www.cabletronix.com in addition to support from
Cabletronix sales engineers at 1-610-429-1511.
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8. DIP SWITCH SETTING for CHANNEL SELECTION
Channel
Std. EIA Video Freq MHz Offset CH Video Freq
MHz
OSC Freq.
MHz DIP Switches
1 2 3 4 5 6 7 8 9 10
2 2 55.25 1014 0 1 0 0 0 0 0 0 0 0
3 3 61.25 1020 1 1 0 0 0 0 0 0 0 0
4 4 67.25 1026 0 0 1 0 0 0 0 0 0 0
5 5 77.725 1036 1 0 1 0 0 0 0 0 0 0
6 6 83.25 1042 0 1 1 0 0 0 0 0 0 0
A-5 95 91.25 1050 1 1 1 1 1 0 1 0 0 0
A-4 96 97.25 1056 0 0 0 0 0 1 1 0 0 0
A-3 97 103.25 1062 1 0 0 0 0 1 1 0 0 0
A-2 98 * 109.2750 1068 0 1 0 0 0 1 1 0 1 0
A-1 99 * 115.2750 1074 1 1 0 0 0 1 1 0 1 0
A 14 * 121.2625 1080 0 1 1 1 0 0 0 0 0 1
B 15 * 127.2625 1086 1 1 1 1 0 0 0 0 0 1
C \16 * 133.2625 1092 0 0 0 0 1 0 0 0 0 1
D 17 139.25 1098 1 0 0 0 1 0 0 0 0 0
E 18 145.25 1104 0 1 0 0 1 0 0 0 0 0
F 19 151.25 1110 1 1 0 0 1 0 0 0 0 0
G 20 157.25 1116 0 0 1 0 1 0 0 0 0 0
H 21 163.25 1122 1 0 1 0 1 0 0 0 0 0
I 22 169.25 1128 0 1 1 0 1 0 0 0 0 0
7 7 175.25 1134 1 1 1 0 0 0 0 0 0 0
8 8 181.25 1140 0 0 0 1 0 0 0 0 0 0
9 9 187.25 1146 1 0 0 1 0 0 0 0 0 0
10 10 193.25 1152 0 1 0 1 0 0 0 0 0 0
11 11 199.25 1158 1 1 0 1 0 0 0 0 0 0
12 12 205.25 1164 0 0 1 1 0 0 0 0 0 0
13 13 211.25 1170 1 0 1 1 0 0 0 0 0 0
J 23 217.25 1176 1 1 1 0 1 0 0 0 0 0
K 24 223.25 1182 0 0 0 1 1 0 0 0 0 0
L 25 * 229.2625 1188 1 0 0 1 1 0 0 0 0 1
M 26 * 235.2625 1194 0 1 0 1 1 0 0 0 0 1
N 27 * 241.2625 1200 1 1 0 1 1 0 0 0 0 1
O 28 * 247.2625 1206 0 0 1 1 1 0 0 0 0 1
P 29 * 253.2625 1212 1 0 1 1 1 0 0 0 0 1
Q 30 * 259.2625 1218 0 1 1 1 1 0 0 0 0 1
R 31 * 265.2625 1224 1 1 1 1 1 0 0 0 0 1
S 32 * 271.2625 1230 0 0 0 0 0 1 0 0 0 1
T 33 * 277/2625 1236 1 0 0 0 0 1 0 0 0 1
U 34 * 283.2625 1242 0 1 0 0 0 1 0 0 0 1
V 35 * 289.2625 1248 1 1 0 0 0 1 0 0 0 1
W 36 * 295.2625 1254 0 0 1 0 0 1 0 0 0 1
AA 37 * 301.2625 1260 1 0 1 0 0 1 0 0 0 1
BB 38 * 307.2625 1266 0 1 1 0 0 1 0 0 0 1
CC 39 * 313.2625 1272 1 1 1 0 0 1 0 0 0 1
DD 40 * 319.2625 1278 0 0 0 1 0 1 0 0 0 1
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EE 41 * 325.2625 1284 1 0 0 1 0 1 0 0 0 1
FF 42 * 331.2625 1290 0 1 0 1 0 1 0 0 1 0
GG 43 * 337.2625 1296 1 1 0 1 0 1 0 0 0 1
HH 44 * 343.2625 1302 0 0 1 1 0 1 0 0 0 1
II 45 * 349.2625 1308 1 0 1 1 0 1 0 0 0 1
JJ 46 * 355.2625 1314 0 1 1 1 0 1 0 0 0 1
KK 47 * 361.2625 1320 1 1 1 1 0 1 0 0 0 1
LL 48 * 367.2625 1326 0 0 0 0 1 1 0 0 0 1
MM 49 * 373.2625 1332 1 0 0 0 1 1 0 0 0 1
NN 50 * 379.2625 1338 0 1 0 0 1 1 0 0 0 1
OO 51 * 385.2625 1344 1 1 0 0 1 1 0 0 0 1
PP 52 * 391.2625 1350 0 0 1 0 1 1 0 0 0 1
QQ 53 * 397.2625 1356 1 0 1 0 1 1 0 0 0 1
RR 54 403.25 1362 0 1 1 0 1 1 0 0 0 0
SS 55 409.25 1368 1 1 1 0 1 1 0 0 0 0
TT 56 415.25 1374 0 0 0 1 1 1 0 0 0 0
UU 57 421.25 1380 1 0 0 1 1 1 0 0 0 0
VV 58 427.25 1386 0 1 0 1 1 1 0 0 0 0
WW 59 433.25 1392 1 1 0 1 1 1 0 0 0 0
XX 60 439.25 1398 0 0 1 1 1 1 0 0 0 0
YY 61 445.25 1404 1 0 1 1 1 1 0 0 0 0
ZZ 62 451.25 1410 0 1 1 1 1 1 0 0 0 0
AAA 63 457.25 1416 1 1 1 1 1 1 0 0 0 0
BBB 64 463.25 1422 0 0 0 0 0 0 1 0 0 0
CCC 65 469.25 1428 1 0 0 0 0 0 1 0 0 0
DDD 66 475.25 1434 0 1 0 0 0 0 1 0 0 0
EEE 67 481.25 1440 1 1 0 0 0 0 1 0 0 0
FFF 68 487.25 1446 0 0 1 0 0 0 1 0 0 0
GGG 69 493.25 1452 1 0 1 0 0 0 1 0 0 0
HHH 70 499.25 1458 0 1 1 0 0 0 1 0 0 0
III 71 505.25 1464 1 1 1 0 0 0 1 0 0 0
JJJ 72 511.25 1470 0 0 0 1 0 0 1 0 0 0
KKK 73 517.25 1476 1 0 0 1 0 0 1 0 0 0
LLL 74 523.25 1482 0 1 0 1 0 0 1 0 0 0
MMM 75 529.25 1488 1 1 0 1 0 0 1 0 0 0
NNN 76 535.25 1494 0 0 1 1 0 0 1 0 0 0
OOO 77 541.25 1500 1 0 1 1 0 0 1 0 0 0
PPP 78 547.25 1506 0 1 1 1 0 0 1 0 0 0
*These channels shall be offset in accordance with FCC Ruling Section76.612
Frequency Channel Number Offset
108 to 118 MHz A,B, C 14,15, 16 12.5 kHz
118 to 137 MHz A-1, A-1 98, 99 25 kHz
225 to 328.6 MHz K – DD 24 -40 12. kHz
328.6 to 225.4 MHz FF 42 25 kHz
335.4 to 400 MHz GG-QQ 43-53 12.5 kHz
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This is a notice to inform you that content passing thru this device may contain
strong language or depictions of violence, sex or substance abuse. This unit contains
no parental control features. Parental discretion is advised.
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