Programmable Attenuators P-AT Series ■Features 1. Used for frequencies from DC to 26.5GHz (max.) Input/output couplings utilizes Hirose’s HE* connector, which is combination of the internal attenuation elements, provides the required attenuation characteristic. 2. Self-disconnecting The drive current will automatically switch off after setting the attenuation. 3. Automatic return In the event of sudden shock the attenuation will quickly return to the pre-set level. ■Applications Wide variety of measuring instruments and other devices requiring control of high frequency transmission lines. * HE connector will mate with K type connectors * K connector is a trademark of Anritsu Co. ■Product Specifications Ratings Frequency range Characteristic 1.Vibration 2.Shock DC~8GHz(P-AT-6,AP-AT-7) Operating temperate range Operating relative humidity DC~26.5GHz(P-AT-8) Requirements -10ç to +75ç(No freezing) 95% Max. Conditions Frequency of 10 to 55 Hz, overall amplitude of 1.5 No electrical discontinuity of 1 µs or more mm for 2 hours in each of 3 directions No damage, cracks, or parts dislocation Acceleration of 98 m/s2, sine half-wave waveform, 3 cycles in each of the 3 axis 3.Temperature cycle No damage, cracks, or parts dislocation ●The test method conforms to MIL-STD-202. ■Materials and Finishes ■Ordering Information Component Material Finish Body Aluminum Conductive alumite Coupling connector body Stainless steel Passivated Female contact Beryllium Copper Gold plating P-AT - 6 ( 8 - 70 ) A 1 2 1 Series Name 2 Suffix 3 Maximum frequency (GHz) 4 Maximum attenuation (dB) 5 Revised 102 3 4 5 ■Specifications Attenuation Accuracy Frequency V.S.W.R. Attenuation (dB) Range (Max) (dB) (GHz) 5dB 10dB 20dB 40dB Part Number P-AT-6(8-70)A DC~8 1.35 P-AT-7(8-75)A DC~8 1.35 Insertion Switching Switching Switching Loss Impedance Power Operating Weight Current Connectors Volt Time (Each Section) (dB) (ohms) (W) Life (g) (DC V) (ms)(Max) (mA) (Max) 0~70 (10dB --- ±0.5 ±0.6 ±1 STEP) 0~75 (5dB ±0.5 ±0.5 ±0.6 ±1 STEP) 1.4 (DC∼ 12GHz) 0~70 (10dB P-AT-8(26.5-70)A DC~26.5 1.7 STEP) (12∼ 26.5GHz) --- Ref table 1 1.5 50 1(CW) +24 120+200 ∞3 section 20 2∞106 HE-J 250 1.5 50 1(CW) +24 160+200 ∞4 section 20 2∞106 HE-J 300 0.55+ 0.06∞f(GHz) 50 1(CW) +24 120+200 ∞3 section 20 2∞106 HE-J 240 Frequency Range Attenuation Accuracy(dB) （GHz） 10dB 20dB 30dB 40dB 50dB 60dB 70dB DC~8 ±0.3 ±0.5 ±0.6 ±0.7 ±0.8 ±1.0 ±1.1 8~12 ±0.4 ±0.5 ±0.7 ±0.9 ±1.0 ±1.3 ±1.5 12~20 ±0.5 ±0.6 ±0.8 ±1.1 ±1.2 ±1.4 ±1.7 20~26.5 ±0.7 ±0.8 ±1.0 ±1.5 ±1.6 ±1.9 ±2.3 ■Typical Data P-AT-7(8-75)A ［dB］ Attenuation 75 70 ［dB］ 2.0 Insertion Loss 65 60 1.0 55 0 50 45 40 VSWR 1.35 1.30 35 30 スルー（0dB） 1.20 25 20 1.10 1.00 DC 15 2 4 Frequency〔GHz〕 6 8 10 5 0 DC 2 4 6 8 Frequency〔GHz〕 103 ■External Dimensions P-AT-6(8-70)A 22 340 Control connector HIF3BA-10D-2.54R 117 10-conductor flat ribbon cable 9.55 97.9 9.55 2-M3∞0.5 4mm deep Opposite side is the same RF OUT RF IN Circuit Organization Section Number (23.15) 1 2 Through 3 10dB 40dB 20dB RF IN 12.6 6.9 47.1 2-1/4-36UNS-2A 51.6 (23.15) Opposite side is the same RF OUT P-AT-7(8-75)A 22 250 Control connector HIF3BA-10D-2.54R 10-conductor flat ribbon cable 142.8 123.7 9.55 9.55 2-M3∞0.5 2-1/4-36UNS-2A RF OUT RF IN (23.15) Circuit Organization Section Number 1 2 Through 3 4 RF IN RF OUT 10dB 104 77.4 Opposite side is the same 40dB 20dB 5dB (23.15) 12.6 6.9 47.1 4mm deep Opposite side is the same ■External Dimensions P-AT-8(26.5-70)A 24 250 Control connector HIF2B-14-2.54RB 10-conductor flat ribbon cable 44.5 90.2 9 7.7 2-1/4-36UNS-2A 76.2 RF IN 105.9 RF OUT 2-M3∞0.5 6mm deep Opposite side is the same Circuit Organization Section Number 1 2 Through 3 10dB 40dB 20dB RF IN RF OUT 105 Contact No. P-AT-6(8-70)A,P-AT-7(8-75)A KHIF3BA-10D-2.54R 1 3 KHIF2B-14-2.54RB Contact No. P-AT-8(26.5-70)A 7 9 1 7 8 10 14 8 5 2 4 6 BAttenuation Change Contact No.(Connect Ground) Section No. Part No. 1 Contact No. 2 Cable Color Attenuation Contact No. 3 Cable Color Attenuation Contact No. 4 Cable Color Attenuation Contact No. Cable Color Attenuation 1 Black 0dB(Through) 3 Gray 0dB(Through) 5 Blue 0dB(Through) ---- ---- ---- 2 White 10dB 4 Purple 40dB 6 Green 20dB ---- ---- ---- 1 Black 0dB(Through) 3 Gray 0dB(Through) 5 Blue 0dB(Through) 7 Yellow 0dB(Through) 2 White 10dB 4 Purple 40dB 6 Green 20dB 8 Orange 5dB 13 Black 0dB(Through) 3 Gray 0dB(Through) 11 Green 0dB(Through) ---- ---- ---- 2 White 10dB 9 Brown 40dB 5 Yellow 20dB ---- ---- ---- P-AT-6(8-70)A P-AT-7(8-75)A P-AT-8(26.5-70)A BDrive Voltage Contact No. Section No. Part No. DC24V Ground Open Contact No. Cable Color Contact No. Cable Color Contact No. Cable Color 9 Red 7 Yellow ---- ---- 10 Brown 8 Orange ---- ---- 9 Red Connector Body ---- ---- ---- 10 Brown ---- ---- ---- ---- 6 Red 12 Purple 4 Blue ---- ---- ---- ---- 10 Orange ---- ---- ---- ---- 1,7,8,14 ---- P-AT-6(8-70)A P-AT-7(8-75)A P-AT-8(26.5-70)A KDC Drive Circuit (1 Section) Switching signal to the RF through side (0 dB) Solenoid Drive circuit +24V Automatic return and automatic disconnection by photo sensor Switching signal to the RF resistance side 106