Originally published at: HP Agilent E4404B Spectrum Analyzer, ESA, 9khz-6.7GHz, Options; 1AX, 1DR, & 1DS - Chratec Part
Agilent / HP Model: E4404B – Spectrum Analyzer – ESA-E Series. Options: 1AX, 1DR, and 1DS ( RS-232, 9-pin D-SUB (m)), Option 1DR ≤ 2 Hz peak-to-peak x Nc, (20 ms), and extended range. Frequency range: 9khz to 6.7GHz.
chratec.com