AML Wireless Systems

· BI-DIRECTIONAL

· MULTI-CHANNEL CAPABILITY

· DIGITAL OR ANALOG

· BPSK, QPSK, 16-QAM

13 GHz Compact Outdoor Transceiver

The AML transceiver “ACƆESS” provides a wireless return path for your system by incorporating both the transmit and receive functions within one compact outdoor housing. Utilizing solid state technology, the transceiver is designed specifically to meet the ever-changing needs of the communications industry. This transceiver offers the advantage of quick implementation by using your existing antennas which, when used with the series of circulators and filters included with the unit, keeps incremental costs marginal and adds no additional line of site or tower loading issues.

The transceiver incorporates an AML Wireless Systems’ multi-channel microwave receiver. The frequency of the downstream signal as supplied by a cable modem termination system (CMTS) or video modulator is within the range of 54 – 504 MHz. The complete microwave input spectrum is block downconverted to the appropriate VHF channel assignments.

The receiver outputs are used to drive the conventional cable plant directly from remote hubs without remodulation, thereby reducing amplifier cascades and the need for supertrunking.

The upstream transmitter block upconverts a 5 – 41 MHz BPSK, QPSK or 16-QAM input data stream to either a 13.16 – 13.20 GHz (standard version) or 13.2 – 13.25 GHz (plus version) microwave output, providing an effective means of sending AML return-path signals to remote cable hubs for distances up to 25 miles. A solid state FET amplifier is utilized in the upstream transmitter.

A multi-pin test connector permits evaluation of various DC voltages. Two test ports are provided so that receiver and transmitter output signals can be monitored.

The phase-locked receiver microwave AGC thresholds are factory set for 56 dB C/N. The downconverter local oscillator’s frequency reference is phase-locked to an incoming pilot tone in order to eliminate frequency drift and to minimize co-channel interference caused by the potential ingress of off-air signals into the cable plant or the subscriber’s Customer Premise Equipment (CPE). The upstream transmitter uses the same local oscillator as the downstream receiver. In the upstream transmitter, a special pilot-tone is generated for the purpose of phase-locking and AGC operation in the upstream receiver.

	No. of Ch.	Composite 2^nd Order (dBc)	Composite 3^rd Order (dBc)
OUTPUT SIGNAL QUALITY @ 56 dB C/N	40	- 70	- 75
	60	- 68	- 71.5
	72	- 67.4	- 69.8

Transceiver Specifications¹

Primary Power	50 to 60 Hz, 50 to 65 Volts, 125 Watts
Temperature Range	-40°F to +120°F or -40°C to +49°C
Humidity	to 100%
Dimensions	19.5” x 13/5” x 10.1”
Weight	48 lbs/22 kg
Shipping Dimensions	24” x 18” x 12” 610 mm x 457 mm x 305 mm
Shipping Weight	55 lbs/25 kgs

Downstream Receiver¹

Microwave Input Frequency	12.7 to 13.15 GHz
Microwave Input Connector	WR75 Waveguide Flange
VHF Output Frequency	54 to 504 MHz
VHF Output/Power Input Connector	5/8 – 24 Cable Entry
Nominal Gain	+19 dB
Frequency Stability	Phaselocked to Downstream Transmitter
Microwave Input Return Loss	+16 dB
RF Output Return Loss	±14 dB
Noise Figure	6 dB
Nominal Output in AGC	26 dBmV
Gain Flatness	±1.5 dB
Microwave AGC Dynamic Range	35 dB
VHF AGC Dynamic Range	12 dB
AGC Flatness	±1 dB

Upstream Transmitter¹

	No. of QPSK/QAM Signals	P_o/Signal (dBm)
Microwave Output Level	2	14
	4	11
	8	8
	16	5
	32	2
	64	-1

Microwave Output Frequency	13.16 to 13.20 GHz
Microwave Output Connector	WR 75 Waveguide Flange
Pilot Tone Frequency	13198 MHz
VHF Input Frequency	5 to 41 MHz
VHF Input Level	25 to 45 dBmV
VHF Input Connector	Female F type entry
Nominal Gain	+29 dB
Frequency Response	±1.0 dB
Frequency Stability	±0.0005%
RF Input Return Loss	+14 dB
Microwave Output Return Loss	+18dB
Noise Figure	10 dB

¹ Specifications subject to change without notice.