E&I 3100L Instruction Manual Download

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The material contained in this document is the property of Electronics & Innovation Ltd., it is subject to
change without notice.

February 2007 Revision B

3100L

Broadband Power Amplifier

HIGH RF VOLTAGES MAY BE PRESENT AT THE OUTPUT OF THIS UNIT. All

operating personnel should use extreme caution in handling these voltages and be
thoroughly familiar with this manual.

Do not attempt to operate this unit prior to reading this manual.

Summary of Contents for 3100L

Page 1: ...out notice February 2007 Revision B 1 3100L Broadband Power Amplifier HIGH RF VOLTAGES MAY BE PRESENT AT THE OUTPUT OF THIS UNIT All operating personnel should use extreme caution in handling these voltages and be thoroughly familiar with this manual Do not attempt to operate this unit prior to reading this manual ...

Page 2: ...ully operational such that it performs according to the original specifications free of charge to the original purchaser Should warranty service be required the unit must be returned to E I freight cost to be borne by the owner If in our opinion the unit has been damaged by use outside the limits prescribed in this manual or by accident then the warranty shall not be honored In such a case E I wil...

Page 3: ...of AM FM SSB pulse and any complex modulation signals The amplifier has 50 dB gain it is unconditionally stable and will not oscillate even with combinations of mismatched source and load impedance It is protected against failure due to output load mismatch and or overdrive RMS forward and reverse powers are monitored by a front panel meter An integral power supply permits operation from 115 230 s...

Page 4: ...withstand a 13dBm input signal 1 0 Volts RMS for all output load conditions without damage POWER OUTPUT METER True RMS power detection 3 of full scale accuracy POWER REQUIREMENTS 85 264 VAC 47 63 Hz SIZE 5 1 4 X 16 5 X 18 1inches 13 4 X 41 9 x 46 0 cm WEIGHT 32 5 pounds 14 7 kg CONNECTORS N OPERATING TEMPERATURE 0 40 C RACK MOUNTING Chapter 2 Operation 2 1 INTRODUCTION The 3100L RF amplifier is us...

Page 5: ...put voltage is 5 times the level of the input signal required to achieve maximum output Input voltages in excess of 2 volts peak may permanently damage the instrument iii Connect the output via a 50 ohm coaxial lead and N plug to the load iv Connect the input signal via a 50 ohm coaxial lead and N plug to the input connector 2 3 2 Front Panel Display The 3100L front panel has a passive LCD display...

Page 6: ...ase contact Service Department 2 3 3 RS 232 Interface The 3100L features a standard RS 232 serial interface suitable for connection to a PC or host system The communication protocol is extremely simple to facilitate readback and control with readily available terminal programs such as Hyperterm The RS 232 link has the following parameters Baud rate 19200 Data bits 8 Parity none Stop bits 1 Flow co...

Page 7: ... drain of Q1 is coupled to the input of Q2 This is transformed to 50 Ω and fed to the driver output N port The driver output signal is fed through a length of coaxial cable to the input of the power amplifier module The signal is split into two equal phase and amplitude signals These signals are fed to the inputs of transistors Q1 and Q2 The amplified signals appearing at the drains of Q1 and Q2 a...

Page 8: ...nel RF input 0dBm A1 Fan 24V Ret J6 IPA1_2 20W_VHF_amp 24V RF_in RF_out Gnd J1 BNC 1 2 1 12 05 CP1 HF_coupler RF_in RF_out Fwd Rev RS232 Control Port J4 J2 BNC 1 2 50 ohm 100W IPA1 VHF_driv er 24V RF_in RF_out Gnd P1 5 9 4 8 3 7 2 6 1 PS1 PS_48V 48V 110VAC_line 110VAC_neutral earth_gnd SELV 5V Inhibit SELV 5V ret Inhibit_ret DC_ok DC_ok_ret 48V_ret 24V 24V_ret LCD1 LCD Data_in 5V 5V_LED Ground 50 ...

Page 9: ... frequency range 150 KHz to 150 MHz to the input connector c Adjust the output level of the sweep generator so that a 50 ohm video detector connected at the output of the unit will not be damaged by excessive power output Reference section 4 4 1 for set up d Observe the gain versus frequency ripple on an oscilloscope calibrated in decibels The gain variation must be not more than 1 5 dB over the f...

Page 10: ... follows a Set the oscilloscope to DC Time cm to Ext X and gain to l0mv cm b Set the sweep generator to the video sweep mode with the start frequency at 150 kHz and the sweep width to 120 MHz c Disconnect the 3100L from the set up and connect the sweep generator RF output directly to the 30 dB attenuator d Adjust the output level of the sweep generator for full vertical deflection on the oscillosc...

Page 11: ...cs Figure 4 2 1 Equipment Required a Sweep Signal Generator b Calorimetric Power Meter HP435B c Spectrum Analyzer d Attenuator 30dB e Coupler 30 dB 2 Connect the Equipment as shown in Figure 4 2 then proceed as follows a Adjust the signal generator to a CW center frequency of 150 kHz for an indicated output of 100 watts on the power meter b Using the spectrum analyzer check that the level of the c...

Page 12: ...shock Close the carton securely and seal with durable tape Mark the shipping container FRAGILE to ensure careful handling Chapter 5 Safety Do not attempt to operate this unit with the cover removed High AC and DC voltages are present The cover prevents against electrical shock due to AC line voltages high DC and RF fields Further the cover provides part of the cooling system design Components spec...

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