User amplifier (Outdoor) SA831

User amplifier SA831 Adopt Philips RF module or Chinese module in forward path, steady output level, good Non-linear, User amplifier (Outdoor) SA831  Description 1-way, 1 output CATV User amplifier Feature Adopt Philips RF module or Chinese module in forward path, steady output level, good Non-linear; adopt low-noise micro tube push-pull circuit in reverse path, small distortion and high signal to noise ratio. Two Plug-in dual-filter and fixed (or VAR ) equalizer and attenuator Waterproof cast-aluminium shell,high-reliable power switching, tight anti-thunder system, have guaranteed that the equipment can work steadily in succession for a long time in the abominable environment of field.  Specification

Frequency bandwidth	Forward	87-860MHz
	Reverse (option)	5-65MHz
Gain	Forward	30dB
	Reverse (option)	12dB
Noise figure	Forward	≤10dB
	Reverse (option)	≤12dB
Output level	Forward	102dBuV
	Reverse(option)	110dBuV
CTB	Forward	≥65dB
CSO	Forward	≥63dB
Return loss	Forward	≥15dB
	Reserve	≥15dB
Flatness in band	Forward	±1dB
	Reserve	±1dB
Input voltage	Ac:135v-250v,or Ac:35v-90v
Consumption	20w
Dimension	235mmx210mmx120mm

Test conditionAt the range of 750MHz (112.25~743.25MHz ) when testing the C/CTB and C/CSO, set 79 PAL-D imitate TV channels signal; set 93PAL-D imitate TV channels signal at the range of 862MHz (112.25~855.25MHz).Choose f1=65MHz, f2=63MHz and f3=57MHz to test when measuring index of max output level in upgo transmission.The index of Carrier to Second Order Intermodulation Ratio is tested under the condition of 110dBuV output level, and choose f1=10MHz, f2=60MHz and f3=50MHz three point to test.

User amplifier (Outdoor) SA831