precise 1 hz rbw narrow resolution

{"cid":"91217181","title":"Rohde Schwarz FSL6 6 GHz RF Spectrum Analyzer with 10 Hz RBW for Precision RF Testing","imgUrl":"https:\/\/img.chinax.com\/nimg\/f7\/d1\/9c221c5d231975457dc017239fe2-200x200-1.jpg","attrs":{"Price":"Contact for Pricing","Brand Name":"Rohde & Schwarz","Model Number":"FSL6","Minimum Order Quantity":"1 unit","Delivery Time":"3-7 working days for stock, 15-30 days for refurbished order","Resolution Bandwidth":"10 Hz to 10 MHz","Display":"8.4-inch TFT SVGA (800 x 600)","Power Supply":"100-240 V AC, 50\/60 Hz, 120 W","Certification":"CE, ISO 9001:2015","Total Measurement Uncertainty":"< 1 dB","Weight":"8.5 kg (18.7 lbs)","RF Input Connector":"N-type female, 50 Ohm","Operating Temperature":"+5 \u00b0C to +45 \u00b0C","Place of Origin":"Germany","Payment Terms":"T\/T,L\/C,PayPal,Western Union","Dimensions (W x H x D)":"412 x 197 x 417 mm","Third-Order Intercept (TOI)":"+18 dBm (typ.)","Tracking Generator (Optional)":"FSL-B1, 5 kHz to 6 GHz","Supply Ability":"In stock","Phase Noise":"-103 dBc\/Hz @ 10 kHz offset (typ.)","Interfaces":"USB 2.0, LAN 10\/100 Base-T, GPIB (optional)","Packaging Details":"","DANL (with Preamplifier)":"-152 dBm\/Hz (typ.)","Frequency Range":"9 kHz to 6 GHz"}}