CATV 45-872MHz Analog 16 in 1 CATV Headend 16 Way Agile Modulator

 

INTRODUCTION

The AH1916AM is a 4RU rack mounted chassis that allows for installation of up to 16 pieces high quality SAW filtered frequency agile modulators covering 860MHz. Built-in active combiner eliminates unnecessary cabling and potential connection problem and ensures high output level. Low out-of-band noise makes it ideal in adjacent channel headend.

FEATURES

1. Full frequency agility allows the rapid creation of channel lineups
2. Each channel is completely independent. Channel configuration is flexible
3. Two cooling fans for heat-sinking prolong the service life
4. None-volatile memory ensures channel programming remains after power loss
5. Two-digit LED display provides quick channel identification
6. Available in NTSC or PAL configurations

SPECIFICATIONS

Chassis
RF	Frequency Range	45 ~ 860 MHz
	Output Connector	F Connector
	Output Level	105 dBµV (Adj.)
	Test Point	-20 dB
	Isolation Port to Port	≥ 35 dB
	Return Loss	≥ 12 dB
	Gain	+ 8 dB
GENERAL	Modulator Capacity	16
	Input Voltage Range	110V or 220V
	Cooling Fan	2
	Consumption	70W (Fully Loaded)
	Dimension	42 * 17 *20 cm
	Net Weight	9 KG (Fully Loaded)
	Shipping Weight	3.7 KG (Chassis Only)
		10 KG ( Fully Loaded)
	Carton Size	53 * 30 * 24 cm
Modulator Card
RF	Output Frequency	45 ~ 860 MHz any channel
	Output Level	103 dBµV (Adj.)
	Output Connector	F Connector
	A / V Ratio	-11 ~ -18 dB (Adj.)
	Frequency Stability	±10KHz
	Video Input Level	0.6-1.5Vp-p (87.5% Modulation)
	Video Input Connector	Yellow RCA
	Audio Input Level	1Vp-p (25KHz Dev.)
	Audio Input Connector	White RCA
GENERAL	Voltage	DC 5V

WARNING:

For the protection of your equipment and its proper working is necessary to connect the
AH1916AM to a ground connection. 
UNPACKING AND HANDLING
A full set AH1916AM is shipped with all equipment assembled, wired, factory tested, and then packed in
an appropriate shipping container. Ensure that all accessories are removed from the container and packing
material before they are discarded.
INSPECTION
Inspect the front and rear of the equipment for shipping damage. Make sure the equipment is clean, and no
wire, cables, or connectors are broken, damaged or loose.
DAMAGE IN SHIPMENT
Should any damage be discovered after unpacking the unit, immediately file a claim with the carrier.
A full report of the damage shall be made and a copy forwarded to vendor.
PRECAUTIONS

PRECAUTIONS	REQUIREMENTS
Avoid heat buildup	Allow rack space (1'')between powered headend product in the equipment
Ensure easy access to rack wiring	Allow a minimum of 18inches behind the equipment rack
Facilitate servicing and maintenance	Allow a minimum of 36'' of clearance in front of the equipment rack
Avoid direct heating or air conditioning	If unavoidable, use deflector plates
AC power source outlets	Locate equipment near sufficient outlets to provide power for test equipment and power tools
Rack support	Make certain rack supports are sufficiently rigid to support racks
Building leakage	Beware of dripping water onto equipment from leaky roofs, waveguide roof entries, and cold water pipe condensations

QUICK INSTALLAION
The AH1916AM is designed for indoor 19'' rack. Make sure a space is left between modulators for air circulation. To prevent electric shock, never remove the ground pin. Insure that electrical input cables entering the building be connected to the building ground as close to the entry point as possible.

1. Feed in the Audio and Video connectors before turn on the power
2. Warm up the modulator and check the picture and audio
3. Set up the channels you want if the factory settings are not what you want

ADJUSTMENT

All SOUKA modulators are heat cycled at the factory and final adjustment are made with the units hot. Thus, allow a 20 minutes warmup before attempting any adjustments. You will need a signal level meter and a TV set.

1. Connect the video and audio cable from your source to the respective connector on the modulator. If you have several AH1916AM, please connect the RF OUTPUT to the proper combiner. Levels can be read at the test point output of combiner output in the rear panel.
2. The AV ADJ. should always be between -15dB to -17dB below the VIDEO ADJ.. Once this ratio is set it will track with the VIDEO ADJ. (All are proper set at the factory.)
3. AUDIO and VIDEO modulation levels are set at the factory for plus or minus 25KHz deviation and 87.5% depth of modulation respectively. Although proper test equipment should be used, minor adjustment can be made utilizing a TV set.
   3.1  Connect the TV set to the final output test point so that its signal level input from the modulator is   about +69dBµV. If the colors look bright and there is sufficient sound without audio buzz, leave the modulation adjustment alone. If there is occasional audio buzz, turn modulation control down slowly counter-clockwise until the audio is clean.
   3.2  If the modulator picture is dark, raise the V ADJ. control slowly until the picture just becomes over bright and begins to distort. Lower the control about 1/8 turn from this point.
   3.3  If the modulator audio is low, try and set TV audio level utilizing an off air signal. Subjectively match this level utilizing the A ADJ. control. Check that all audio levels are about the same when switching channels.

COMMON TROUBLESHOOTING

1. Herringbone in TV

Disconnect modulator from local channels and check modulated channel. If there is programming move the modulated channel. If the picture is snowy, use a low pass filter to block noise or data coming in from cable.
2. Horizontal Bars Rolling Through TV Picture

Check for a component of the system that is introducing DC power into the system. Disconnect that component and check TV. If the hum bars stop, use a DC blocker down stream from that component to block the power from getting to the TVs.
 If the rolling is only on the modulated channels, check for impedance mismatch by adjusting the video level adjustment pot.
3. Vertical Bars Rolling Through TV Picture

Check for AC power getting on the line. Use a ground breaker in line.
4. Ghost on the Picture

Check for low quality combiner/ splitter in system. Replace with high isolation combiner/splitter.
Check the type of coax used in system. Inadequate shielding in coax will cause ghosting.
5. Snowy Picture
Verify the modulator is set up for the proper TV channel band.
Verify the TV is set up on the proper TV channel band.
6. Black and White Lines on one Local Channel 

Move modulated channel up to a new channel. If problem persists and all of the inputs of a multiple input modulator are not being used, check default channels on modulator to see if default channel is set to the same channel that the problem channel is.
7. Modulated Picture is Too Bright or Washed out
   Adjust video level adjustment potentiometer on the modulator front panel or rear panel of chassis.
   If using a camera, check positioning of the lens to be sure it's not aimed at the sun or a reflection.
   Adjust camera lens.
8. Modulated Picture is Too Dark
  If the baseband video is being split, you might require a amplifier
   Try to adjust video level potentiometer on the front panel of modulator or rear panel of chassis
   If the video source is not being split, check input source directly into a TV
   Adjust the video level adjustment pot on the chassis of the set top units to the proper brightness.
9. Noise on the Audio
   Insert grounding block in line and ground coax cable before it enters the TV
   Use professional grade audio/video interconnect between the components and the modulator
10. Audio is Too Low 
  Use a Y connector to combiner the left and right audio before entering the modulator

WARRANTY ( 1 YEAR)
SOFTEL'S Electronics equipment has been thoroughly tested and found to be in proper operating condition when shipped from the factory and is warranted to be free from defects in materials or workmanship that may develop within one year of the date of purchase. SOFTEL agrees to remedy such or furnish a new part, or at its option an entire unit, or any part of a unit that disclosed such defect, provided that the unit or part is returned to SOFTEL or SOFTEL authorized service facility according to the terms listed below.
Prior authorization with a return authorization number issued by SOFTEL or its representative is required for all returns. The purchaser shall be responsible for all freight charges on shipment to SOFTEL unless otherwise authorized. Charges to return a unit or part to purchaser will be paid by SOFTEL. Claim for damage in shipment to the purchaser must be filed by the purchaser with the carrier in accordance with the carrier's regulations.
SOFTEL shall not be responsible for the shipping charge if the returned unit turns out to be flawless.

A Return Material Authorization (RMA) Number is required on all products returned to SOFTEL. Regardless if the product is being returned for repair or credit. Before returning product, please contact the SOFTEL sale who you contact with.

Buyer :		RMA Number:
Mode Number	Products ID Number	Problem

If there's not enough space in this form, please attach a separate sheet of paper.



Thanks for using our products.
For more product info, please visit our website:
http://wsoftel-optic.en.made-in-china.com

APPENDIX I

PAL  B/G Channel and Frequency Table      Audio Carrier 5.5MHz
	Channel	Video Freq.			Channel	Video Freq.			Channel	Video Freq.
1	E2	48.25		37	S21	303.25		73	E36	591.25
2	E3	55.25		38	S22	311.25		74	E37	599.25
3	E4	62.25		39	S23	319.25		75	E38	607.25
4	X	69.25		40	S24	327.25		76	E39	615.25
5	Y	76.25		41	S25	335.25		77	E40	623.25
6	Z	83.25		42	S26	343.25		78	E41	631.25
7	Z1	90.25		43	S27	351.25		79	E42	639.25
8	Z2	97.25		44	S28	359.25		80	E43	647.25
9	S1	105.25		45	S29	367.25		81	E44	655.25
10	S2	112.25		46	S30	375.25		82	E45	663.25
11	S3	119.25		47	S31	383.25		83	E46	671.25
12	S4	126.25		48	S32	391.25		84	E47	679.25
13	S5	133.25		49	S33	399.25		85	E48	687.25
14	S6	140.25		50	S34	407.25		86	E49	695.25
15	S7	147.25		51	S35	415.25		87	E50	703.25
16	S8	154.25		52	S36	423.25		88	E51	711.25
17	S9	161.25		53	S37	431.25		89	E52	719.25
18	S10	168.25		54	S38	439.25		90	E53	727.25
19	E5	175.25		55	S39	447.25		91	E54	735.25
20	E6	182.25		56	S40	455.25		92	E55	743.25
21	E7	189.25		57	S41	463.25		93	E56	751.25
22	E8	196.25		58	E21	471.25		94	E57	759.25
23	E9	203.25		59	E22	479.25		95	E58	767.25
24	E10	210.25		60	E23	487.25		96	E59	775.25
25	E11	217.25		61	E24	495.25		97	E60	783.25
26	E12	224.25		62	E25	503.25		98	E61	791.25
27	S11	231.25		63	E26	511.25		99	E62	799.25
28	S12	238.25		64	E27	519.25		100	E63	807.25
29	S13	245.25		65	E28	527.25		101	E64	815.25
30	S14	252.25		66	E29	535.25		102	E65	823.25
31	S15	259.25		67	E30	543.25		103	E66	831.25
32	S16	266.25		68	E31	551.25		104	E67	839.25
33	S17	273.25		69	E32	559.25		105	E68	847.25
34	S18	280.25		70	E33	567.25		106	E69	855.25
35	S19	287.25		71	E34	575.25		107	E70	863.25
36	S20	294.25		72	E35	583.25		108	E71	871.25

APPENDIX II

NTSC Channel and Frequency Table      Audio Carrier 4.5MHz
NO.	CH.	Video Freq.		NO.	CH.	Video Freq.		NO.	CH.	Video Freq.		NO.	CH.	Video Freq.
1	2	55.25		35	31	265.25		69	65	469.25		103	104	673.25
2	3	61.25		36	32	271.25		70	66	475.25		104	105	679.25
3	4	67.25		37	33	277.25		71	67	481.25		105	106	685.25
4	5	77.25		38	34	283.25		72	68	487.25		106	107	691.25
5	6	83.25		39	35	289.25		73	69	493.25		107	108	697.25
6	95	91.25		40	36	295.25		74	70	499.25		108	109	703.25
7	96	97.25		41	37	301.25		75	71	505.25		109	110	709.25
8	97	103.25		42	38	307.25		76	72	511.25		110	111	715.25
9	98	109.25		43	39	313.25		77	73	517.25		111	112	721.25
10	99	115.25		44	40	319.25		78	74	523.25		112	113	727.25
11	14	121.25		45	41	325.25		79	75	529.25		113	114	733.25
12	15	127.25		46	42	331.25		80	76	535.25		114	115	739.25
13	16	133.25		47	43	337.25		81	77	541.25		115	116	745.25
14	17	139.25		48	44	343.25		82	78	547.25		116	117	751.25
15	18	145.25		49	45	349.25		83	79	553.25		117	118	757.25
16	19	151.25		50	46	355.25		84	80	559.25		118	119	763.25
17	20	157.25		51	47	361.25		85	81	565.25		119	120	769.25
18	21	163.25		52	48	367.25		86	82	571.25		120	121	775.25
19	22	169.25		53	49	373.25		87	83	577.25		121	122	781.25
20	7	175.25		54	50	379.25		88	84	583.25		122	123	787.25
21	8	181.25		55	51	385.25		89	85	589.25		123	124	793.25
22	9	187.25		56	52	391.25		90	86	595.25		124	125	799.25
23	10	193.25		57	53	397.25		91	87	601.25		125	126	805.25
24	11	199.25		58	54	403.25		92	88	607.25		126	127	811.25
25	12	205.25		59	55	409.25		93	89	613.25		127	128	817.25
26	13	211.25		60	56	415.25		94	90	619.25		128	129	823.25
27	23	217.25		61	57	421.25		95	91	625.25		129	130	829.25
28	24	223.25		62	58	427.25		96	92	631.25		130	131	835.25
29	25	229.25		63	59	433.25		97	93	637.25		131	132	841.25
30	26	235.25		64	60	439.25		98	94	643.25		132	133	847.25
31	27	241.25		65	61	445.25		99	100	649.25		133	134	853.25
32	28	247.25		66	62	451.25		100	101	655.25		134	135	859.25
33	29	253.25		67	63	457.25		101	102	661.25
34	30	259.25		68	64	463.25		102	103	667.25

 

PAL  B/G Channel and Frequency Table
	CH.	DIS			CH.	DIS			CH.	DIS
1	E02	02		22	E08	08		43	S27	2.7
2	E03	03		23	E09	09		44	S28	2.8
3	E04	04		24	E10	10		45	S29	2.9
4	X			25	E11	11		46	S30	3.0
5	Y	Y		26	E12	12		47	S31	3.1
6	Z	2		27	S11	1.1		48	S32	3.2
7	Z01			28	S12	1.2		49	S33	3.3
8	Z02			29	S13	1.3		50	S34	3.4
9	S01	0.1		30	S14	1.4		51	S35	3.5
10	S02	0.2		31	S15	1.5		52	S36	3.6
11	S03	0.3		32	S16	1.6		53	S37	3.7
12	S04	0.4		33	S17	1.7		54	S38	3.8
13	S05	0.5		34	S18	1.8		55	S39	3.9
14	S06	0.6		35	S19	1.9		56	S40	4.0
15	S07	0.7		36	S20	2.0		57	S41	4.1
16	S08	0.8		37	S21	2.1		58	E21	21
17	S09	0.9		38	S22	2.2		59	E22	22
18	S10	1.0		39	S23	2.3		60	E23	23
19	E05	05		40	S24	2.4		61	E24	24
20	E06	06		41	S25	2.5		62	E25	25
21	E07	07		42	S26	2.3		63	E26	26

 

PAL  B/G Channel and Frequency Table
	CH.	DIS			CH.	DIS			CH.	DIS
64	E27	27		79	E42	42		94	E57	57
65	E28	28		80	E43	43		95	E58	58
66	E29	29		81	E44	44		96	E59	59
67	E30	30		82	E45	45		97	E60	60
68	E31	31		83	E46	46		98	E61	61
69	E32	32		84	E47	47		99	E62	62
70	E33	33		85	E48	48		100	E63	63
71	E34	34		86	E49	49		101	E64	64
72	E35	35		87	E50	50		102	E65	65
73	E36	36		88	E51	51		103	E66	66
74	E37	37		89	E52	52		104	E67	67
75	E38	38		90	E53	53		105	E68	68
76	E39	39		91	E54	54		106	E69	69
77	E40	40		92	E55	55		107	E70	70
78	E41	41		93	E56	56		108	E71	71

 

NTSC Channel and Frequency Table
NO.	CH.	Video Freq.		NO.	CH.	DIS		NO.	CH.	DIS		NO.	CH.	DIS
1	2	02		21	8	8		41	37	37		61	57	57
2	3	03		22	9	9		42	38	38		62	58	58
3	4	04		23	10	10		43	39	39		63	59	59
4	5	05		24	11	11		44	40	40		64	60	60
5	6	06		25	12	12		45	41	41		65	61	61
6	95	95		26	13	13		46	42	42		66	62	62
7	96	96		27	23	23		47	43	43		67	63	63
8	97	97		28	24	24		48	44	44		68	64	64
9	98	98		29	25	25		49	45	45		69	65	65
10	99	99		30	26	26		50	46	46		70	66	66
11	14	14		31	27	27		51	47	47		71	67	67
12	15	15		32	28	28		52	48	48		72	68	68
13	16	16		33	29	29		53	49	49		73	69	69
14	17	17		34	30	30		54	50	50		74	70	70
15	18	18		35	31	31		55	51	51		75	71	71
16	19	19		36	32	32		56	52	52		76	72	72
17	20	20		37	33	33		57	53	53		77	73	73
18	21	21		38	34	34		58	54	54		78	74	74
19	22	22		39	35	35		59	55	55		79	75	75
20	7	7		40	36	36		60	56	56		80	76	76

 

NTSC Channel and Frequency Table
NO.	CH.	DIS		NO.	CH.	DIS		NO.	CH.	DIS		NO.	CH.	DIS
81	77	77		95	91	91		109	110	1.0		123	124	2.4
82	78	78		96	92	92		110	111	1.1		124	125	2.5
83	79	79		97	93	93		111	112	1.2		125	126	2.6
84	80	80		98	94	94		112	113	1.3		126	127	2.7
85	81	81		99	100	0.0		113	114	1.4		127	128	2.8
86	82	82		100	101	0.1		114	115	1.5		128	129	2.9
87	83	83		101	102	0.2		115	116	1.6		129	130	3.0
88	84	84		102	103	0.3		116	117	1.7		130	131	3.1
89	85	85		103	104	0.4		117	118	1.8		131	132	3.2
90	86	86		104	105	0.5		118	119	1.9		132	133	3.3
91	87	87		105	106	0.6		119	120	2.0		133	134	3.4
92	88	88		106	107	0.7		120	121	2.1		134	135	3.5
93	89	89		107	108	0.8		121	122	2.2
94	90	90		108	109	0.9		122	123	2.3

FAQ

1. What are the payment terms that you support?

Usually, we accept T/T, PayPal, Western Union, and Alibaba Trade Assurance. You can select the terms of payment which is more convenient for you.


2. What about the lead time?

Usually, if there's stock, we ship the goods within 3~5 working days after the deposit is confirmed. If it is out of stock, the lead time depends.


3. How about the shipping?

When the package is small, we normally choose FedEx, DHL, TNT, and UPS and so on, while the goods have high weight and volume, we suggest using air or sea shipment.


4. How can I place an order?

(1) Negotiation is agreed for the product price and specifications.

(2) Proforma invoice will be sent for confirmation.

(3) After the agreement on the proforma invoice, the customer makes the deposit.

(4) Manufacturing will be started as soon as the payment is confirmed by our bank.

(5) Ship out the goods within the agreed delivery deadline.


5. Can you do OEM for us?

Yes. If there is a certain order quantity, we can do OEM including printing, logo, and customized model for you.


6. How about the Warranty?

There are 12 months for the warranty.

While the warranty is not responsible for those broken by violence or updated with other brands.