任何人都可以提供以下帮助:我们仍在使用HP 8673D信号发生器,并且使用HP 11726-1000A盒式磁带和HP 85D控制器已经多年来校准/调整它们。几个月前我们的HP 85D控制器出了问题,我们无法获得任何备件(不足为奇)。安捷伦(或任何其他人)是否已将HP 11726-1000A盒式磁带上的HP 8673D调整程序转换为任何其他介质,因为我们无法再读取盒式磁带以在HP(HT)Basic中运行它......如果没有,是否有人有手册调整这些发电机的程序? 以上来自于谷歌翻译 以下为原文Can anyone help with the following:We still are using the HP 8673D signal generators and have been calibrating / adjusting them for years now using the HP 11726-1000A Cassette and HP 85D controller. Our HP 85D controller went wrong several months ago and we are unable to get any spares (not surprisingly). Did Agilent (or anyone else) convert the HP 8673D adjustment program on the HP 11726-1000A Cassette to any other media since we can no longer read the cassette to run it in HP (HT) Basic……If not does anyone have a manual procedure for the adjustment of these generators?
2019-07-26 07:30
如何实现QQ主界面效果?
2021-11-04 06:17
作者:Brad Hall和Wyatt Taylor 摘要传统Ka波段地面站卫星通信系统依赖于室内到室外配置。室外单元包含天线和块下变频接收机,接收机输出L波段的模拟信号。该信号随后被传送到室内单元,室内单元包含滤波、数字化和处理系统。Ka波段的干扰信号通常较少,因此室外单元的主要任务是以线性度为代价来优化噪声系数。室内到室外配置很适合地面站,但难以融合到小尺寸、重量轻、低功耗(SWaP)的环境中。若干新兴市场推动了对小尺寸Ka波段接入的需求。无人机(UAV)和步兵若能接入此类信道,将大大受益。对于无人机和步兵,无线电功耗直接决定电池寿命,进而决定任务时长。此外,过去专门用于空中平台的传统Ka波段信道,现在正被考虑用于提供更广泛的接入。这意味着,传统上仅需要下变频单个Ka信道的空中平台,现在可能需要工作在多个信道上。本文将概述Ka波段应用面临的设计挑战,并说明一种支持此类应用实现低SWaP无线电解决方案的新架构。
2019-07-26 06:15
Hican你在端口B寄存器中右转?IE RRF PORTBI试图在端口B上使用4位到7位的中断,并希望在RB0到RB3i上输出RB4-RB7上的任何数据,也需要保持RB0到RB3作为输入,直到数据在那里,以避免与另一个PICIF旋转不允许的总线争用,指令真的是真的。像是MOVFF,但不能在16FCAN上这样做:-MOVLW 0xF0;设置RB0到RB3作为输出MOVWF TrISB;端口B设置RRF PORTB,0;向右旋转4次,留下结果WRRF PORTB,0 RRF PORTB,0 RRF PORTB,0;W应该包含RB4-7作为比特0到3 BCF PORTA,0;这是用来在PIC18F2550软中断上拉低R3,以改变从O/P到I/P的四个端口,当您在可用端口上运行时,在16F628 A MOVWF端口上杂乱地读取RB0 RB3上的地址:(我是新手,所以没有火焰。 以上来自于百度翻译 以下为原文 Hican you rotate right in the PORT B register ?ieRRF PORTB I'm attempting to use the interrupt on bits 4 to 7 on Port B and would like to output what ever is on RB4-RB7 on RB0 to RB3I also need to keep RB0 to RB3 as inputs until the data is there, to avoid bus contention with another PICIf rotate right not allowed , the instruction I'd really like isMOVFF, but that not available on a 16Fcan I do something like this:-movlw 0xF0; set RB0 to RB3 as outputs movwf TRISB; port B set up rrfPORTB,0 ; rotate right 4 times, leave result in WrrfPORTB,0 rrfPORTB,0 rrfPORTB,0 ; W should contain RB4-7 as bits 0 to 3 bcf PORTA,0; this is used to pull RE3 low on a PIC18F2550 soft interrupt to change four ports from o/p to i/p to read whats on RB0-RB3 on the 16F628A movwfPORTB very messy when you run out of usable ports :(I'm a novice , so no flames pleasethanksRichard
2019-03-12 13:04