Call it an obsession; I like to collect datasheets and manuals. This mostly due to frustration when a casual google search does not yield a datasheet or manual I seek. So whenever I find a datasheet I am missing/need, I add it to the collection.

If you have one I am missing, please share!

Special Thanks to Ite Weide for providing some new manuals and updating others

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• Ortec_109A_Preamplifier
• Ortec_113_Preamplifier
• Ortec_124_125_Preamplifier
• Ortec_142A_142B_142C_Preamplifier
• Ortec_142AH_Preamplifier
• Ortec_142IH_Preamplifier
• Ortec_142PC_Preamplifier
• Ortec_210_Detector_Control_Unit
• Ortec_265a_Photomultiplier_Tube_Base
• Ortec_266_Photomultiplier_Base
• Ortec_269_Photomultiplier_Base
• Ortec_276_Photomultiplier_Base
• Ortec_276L_Photomultiplier_Base
• Ortec_296_Photomultiplier_Base
• Ortec_401A_401B_402H_Operating_&_Service_Manual
• Ortec_401_402A_Bin_and_Power_Supply
• Ortec_402A_402D_Power Supplies
• Ortec_403a_Time_Pickoff_Control
• Ortec_404A_Pile-up_Inspector
• Ortec_406A_Single_Channel_Analyzer
• Ortec_408_Biased_Amplifier
• Ortec_409_Linear_Gate_and_Slow_Coincidence
• Ortec_410_Linear_Amplifier
• Ortec_411_Pulse_Stretcher
• Ortec_411_Pulse_Stretcher_Schematics
• Ortec_414a_Fast_Coincidence
• ortec_416_Gate_and_Delay_Generator
• Ortec_416a_Gate_and_Delay_Generator
• Ortec_417_Fast_Discriminator
• Ortec_418_Universal_Coincidence
• Ortec_418a_Universal_Coincidence
• Ortec_419_Percision_Pulse_Generator
• Ortec_420_Timing_Single_Channel_Analyzer
• Ortec_420A_Single_Channel_Analyzer
• Ortec_421_Integral_Discriminator
• Ortec_422_Dual_Decade_Attenuator
• Ortec_425_Delay
• Ortec_425a_Nanosecond_Delay
• Ortec_426_Linear_Gate
• Ortec_427a_Delay_Amplifier
• Ortec_428_HV_Bias_Supply
• Ortec_428_Detector_Bias_Supply_With_Schematic
• Ortec_430_Scalar
• Ortec_431_Timer-Scalar
• Ortec_432A_Print-Out_Control
• Ortec_433_Sum_Invert_Amplifier
• Ortec_433a_Dual_Sum_and_Invert_Amplifier
• Ortec_435_Active_Filter_Amplifier
• Ortec_436_100MHz_Discriminators
• Ortec_437_Time_to_Pulse_Height_Converter
• Ortec_437A_Time_to_Pulse_Height_Converter
• Ortec_438_Baseline_Restorer
• Ortec_439_Digital_Current_Integrator
• Ortec_440_Selectable_Active_Filter_Amplifier
• Ortec_440A_Selectable_Active_Filter_Amp
• Ortec_441_Ratemeter
• Ortec_442_Linear_Gate_Stretcher
• Ortec_444_Gated_Biased_Amplifier
• Ortec_446_High_Voltage_Powersupply
• Ortec_446_447_High Voltage Power Supply
• Ortec_448_Research_Pulser
• Ortec_449_Log_Lin_Ratemeter
• Ortec_449-2_Log/Lin+Ratemeter
• Ortec_450_Research_Amplifier
• Ortec_451_Spectroscopy_Amplifier
• Ortec_452_Spectroscopy_Amplifier
• Ortec_453_Constant_Fraction_Timeing_Discriminator
• Ortec_454_Timing_Filter_Amplifier
• Ortec_455_Constant_Fraction_Timing_and_SCA
• Ortec_455_Constant_Fraction_Timing_and_SCA_Better Schematic
• Ortec_456_High_Voltage_Power_Supply
• Ortec_456H_High_Voltage_Power_Supply
• Ortec_458_Pulse_Shape_Analyzer
• Ortec_459_5KV_HV_ Bias_Supply_Alternate
• Ortec_459_5KV_HV_Bias_Supply
• Ortec_460_Delay_Line_Amplifier_With_Schematic
• Ortec_461_Alarm_Control
• Ortec_462_Time_Calibrator
• Ortec_463_Constant_Fraction_Discriminator
• Ortec_464_Position_Sensitive_Detector_Analyzer
• Ortec_467_Time_to_Pulse_Height_Converter_and_SCA
• Ortec_472_Spectroscopy_Amplifier
• Ortec_472A_Spectroscopy_Amplifier
• Ortec_473a_Constant_Fraction_Discriminator
• Ortec_474_Timing_Filter_Amplifier
• Ortec_480_Pulser
• Ortec_484_Scaler_Photon_Counter
• Ortec_485_Amplifier
• Ortec_487_Spectrum_Scanner
• Ortec_495_Power_Supply
• Ortec_499_Fast_Slow_Logic_Converter
• Ortec_533_Dual_Sum_and_Invert_Amplifier
• Ortec_542_Linear_Gate_and_Stretcher
• Ortec_550_Single_Channel_Analyzer
• Ortec_550a_Single_Channel_Analyzer
• Ortec_551_Timing_Single_Channel_Analyzer
• Ortec_552_Pulse_Shape_Analyzer_and_Timing_SCA
• Ortec_566_Time_to_Amplitude_Converter
• Ortec_567_Time_to_Amplitude_Converter
• Ortec_570_Spectroscopy_Amplifier
• Ortec_572_Spectrsoscopy_Amplifier
• Ortec_572a_Spectroscopy_Amplifier
• ortec_575_Amplifier
• Ortec_575a_Amplifier
• Ortec_579_Fast_Filter_Amplifier
• Ortec_583b_Constant_Fraction_Differential_Discriminator
• Ortec_584_Constant_Fraction_Discriminator
• Ortec_590a_Amplifier_and_Timing_SCA
• Ortec_659_5KV_HV_Bias_Supply
• Ortec_659_5KV_HV_Bias_Supply_Alternate
• Ortec_660_Dual_5KV_HV_Bias_Supply
• Ortec_661_Ratemeter
• Ortec_661_Ratemeter_Data_Sheet
• Ortec_661_Ratemeter_with_schematic
• Ortec_671_Spectroscopy_Amplifier 
• Ortec_672_Spectroscopy_Amplifier
• Ortec_673_Spectroscopy_Amplifier_and_Gated_Integrator
• Ortec_701_Manual_Data_Entry
• Ortec_710_Quad_1KV_HV_Bias_Supply
• Ortec_715_Dual_Counter_Timer
• Ortec_719_Timer
• Ortec_729A_Liquid_Nitrogen_Level_Monitor
• Ortec_739_Amplifier
• Ortec_770_Counter
• Ortec_775_775H_Counters
• Ortec_777A_Line_Printer
• Ortec_778_Dual_Counter
• Ortec_778JA_Dual_Counter
• Ortec_785_Auto-Fill_Controller
• Ortec_786_Computer_Module
• Ortec_850_Quad_Single_Channel_Analyzer
• Ortec_855_Dual_Spectroscopy_Amplifier
• Ortec_863_Quad_Timing_Filter_Amplifier
• Ortec_871_Timer_and_Counter
• Ortec_874_Quad_Counter/Timer
• Ortec_875_Counter
• Ortec_879_Buffered_Interface
• Ortec_918_ADCAM_MultiChannel_Buffer
• Ortec_920e_16_input_Multichannel_Buffer
• Ortec_924_Quad_Discriminator
• Ortec_925_Scint-Ace
• Ortec_927_Dual_Multichannel_Buffer
• Ortec_928_Octal_Discriminator
• Ortec_934_Quad_Constant_Fraction_100Mhz_Discriminator
• Ortec_935_Quad_Constant_Fraction_200Mhz_Discriminator
• Ortec_974a_Quad_100Mhz_Counter_Timer
• Ortec_976_Quad_250MHz_Counter_Timer
• Ortec_978_Dual_Timer_Pulse_Generator
• Ortec_980_General_Purpose_Interface_Controller
• Ortec_994_Dual_Counter_and_Timer
• Ortec_995_Dual_Counter
• Ortec_996_Counter_Timer
• Ortec_4001a_Modular_System_Bin
• Ortec_4001c_Modular_System_Bin
• Ortec_4002a_96W_Power_Supply
• Ortec_4002d_120W_Power_Supply
• Ortec_4002e_300W_Power_Supply
• Ortec_4002p_Portable_Power_Supply
• Ortec_4003_Preamplifier_Power_Supply_Breakout
• Ortec_4006__mini_Bin_and_Power_Suppl
• Ortec_4163_Dual_Amplifier
• Ortec_4621_Time_Histogram
• Ortec_4623_Signal_Averager_Input
• Ortec_4691_High_Voltage_Power_Supply
• Ortec_9301_9301s_Fast_Preamplifier
• Ortec_9302_Amplifier_Discriminator
• Ortec_9305_Fast_Preamplifier
• Ortec_9306_1GHz_Preamplifier
• Ortec_9307_pico-Timing_Discriminator_with_schematic
• Ortec_9309-4_Quad_Fase_Amplifier
• Ortec_9310_Dual_Divide_by_10_Scaler
• Ortec_9310-16_16_Channel_Fast_Amplifier
• Ortec_9325_Digital_To_Analog_Converter
• Ortec_9326_Fast_Preamplfier
• Ortec_9327_1Ghz_Amplifier_and_Timing_Discriminator
• Ortec_9349_Log_Lin_Rate_Meter
• Ortec_AN302-NL_Quad_DC_Amplifier
• Ortec_PS016_Preset_Scaler
• Ortec_OD410_Charge_Digitizer
• Ortec_LG101/N_Linear_Gate
• Ortec_Delay_and_Gate_Generator
• Ortec_SCM-1
• Ortec_VFC-10
• Ortec_GG200/N_Computer_Module
• Ortec_Electron_Column_Interface
• Ortec_CRM_Controller
• Ortec_c124_Coincidence_Latch
  ORtec_C126/n_Strobed_Coincidence
• Ortec_c315nl_Regenerative_Majority_Coincidence
• Ortec_cf8000_Octal_Constant_Fraction_Discriminator
• Ortec_co4020_Quad_4input_Logic
• Ortec_digibase_mnl
• Ortec_digibase-e
• Ortec_FTA820a-c_Octal_Fast_Timing_Amplifier
• Ortec_gg8020_Octal_Gate_and_Delay_Generator
• Ortec_h242A_h242B_Preamplifier
• Ortec_rc014_Real_Time_Clock
• Ortec_s424b_Quad_Scalar
• Ortec_S424F_Quad_Scalar
• Ortec_t122nl_Quad_Updating_Discriminator
• Ortec_t140n_Quad_Zero_Crossing_Discriminator
• Ortec_vt120_Fast_Timing_Preamplifier_With_Schematic