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您好,我正在使用最新的A.09.90.05固件。
查看“编程”部分下的帮助文件,在'SENSe:MIXer:'树下,他们有命令设置RF输入功率(即'INPut:POWer)和LO功率(即'LO:POWer) '),但我找不到一个条目来解耦端口电源或设置IF输出功率。 (即'OUT:POWer'之类的命令)例如,我想使用PNA-X的端口1和2设置SMC通道,以连接下变频器RF和IF端口。 (使用嵌入式LO)。 我想将端口1功率(RF侧)设置为-20dBm,端口2功率(IF侧)设置为-10dBm。 后续问题是,如果有一个SCPI命令为SMC通道设置端口2电源,它会自动设置相应的端口2源衰减器设置,还是必须通过'SENSE:POW2:ATT'手动设置它 命令? 例如,如果我希望端口2功率为-40dBm,则端口2源衰减器应设置为至少10dB。 谢谢,rok 以上来自于谷歌翻译 以下为原文 Hello, I'm using the latest A.09.90.05 firmware. In looking through the help file under the 'Programming' section, under the 'SENSe:MIXer:' tree, they have commands to set the RF input power (i.e. 'INPut:POWer), and the LO power (i.e. 'LO:POWer'), but I couldn't find an entry to decouple the port powers or to set the IF output power. (i.e. a command like 'OUT:POWer') For example, I want to setup a SMC channel using Ports 1&2 of the PNA-X to hook up to a downconverter RF and IF ports. (using embedded LO). I want to set the Port 1 power (RF side) to be -20dBm and Port 2 power (IF side) to be -10dBm. A followup question is that if there is a SCPI command to set the Port 2 power for an SMC channel, will that automatically set the appropriate Port 2 source attenuator setting, or do I have to set it manually via 'SENSE:POW2:ATT ' command? For instance, if I want Port 2 power to be -40dBm, then the Port 2 source attenuator should be set to at least 10dB. Thanks, rok |
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对于混音器,所有功率设置均可在SOUR:POW树下使用。
RF和LO功率可以通过SENS:MIX树设置,但是对于更复杂的事情,你需要去SOUR:POW树。 所以,鉴于此,可以直接解耦功率:SOUR:POW:COUPle OFF并设置IF端口的电源,SOUR:POW2 -40可以让衰减器保持自动。 对于n5242a的-40dBm功率电平,自动衰减器将衰减器设置为30dB。 但是,如果要覆盖该设置,可以设置自己的衰减器值:SOUR:POW2:ATT 20设置衰减器后,自动衰减器设置将关闭。 这将确保PNA尊重您所做的设置。 以上来自于谷歌翻译 以下为原文 For mixers, all the power settings are available under the SOUR:POW tree. The RF and LO powers can be set through the SENS:MIX tree, but for anything more complicated, you need to go the SOUR:POW tree. So, given that, it is straightforward to decouple the powers: SOUR:POW:COUPle OFF And to set the power on the IF port, SOUR:POW2 -40 you can leave the attenuator at auto. For a power level of -40dBm on a n5242a, the auto attenuator will set the attenuator to 30dB. But, if you want to override that setting, you can set your own attenuator value: SOUR:POW2:ATT 20 Once you set the attenuator, then the auto attenuator setting is turned off. That will make sure that the PNA respects the setting that you made. |
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