該SR844是具有25 kHz至200 MHz的頻率范圍和高達(dá)80 dB的無漂移動(dòng)態(tài)儲(chǔ)備的鎖相放大器，提供無與倫比的性能。它包括許多功能，易于操作，可編程，你來期望從SRS DSP鎖定放大器。

SR844特性：
·25 kHz到200 MHz的頻率范圍


·80分貝動(dòng)態(tài)儲(chǔ)備

時(shí)間常數(shù)從100μs到30 ks（6,12,18或24分貝/十月滾動(dòng)）

"無時(shí)間常數(shù)"模式（10μs至20μs的更新速率）


·自動(dòng)增益、相位、保留和偏移


·兩個(gè)16位數(shù)模轉(zhuǎn)換器和


·內(nèi)部或外部參考


·GPIB和RS-232接口


美國(guó)斯坦福SRS 射頻鎖相放大器SR844
25kHz—200MHz頻率范圍, 100s -30ks時(shí)間常數(shù)；6，12，18，24dB/倍頻程衰減,
內(nèi)部或外部參考源；自動(dòng)量程；存儲(chǔ)和調(diào)用9個(gè)儀器設(shè)備, 標(biāo)準(zhǔn)GPIB，RS—232接口
The SR844 is the widest bandwidth lock-in amplifier available. It provides uncompromised performance with a frequency range of 25 kHz to 200 MHz and up to 80 dB of drift-free dynamic reserve. It includes the many features, ease of operation, and programmability that you've come to expect from SRS DSP lock-in amplifiers.
· 25 kHz to 200 MHz frequency range

· 80 dB dynamic reserve

· Time constants from 100 μs to 30 ks (6, 12, 18 or 24 dB/oct rolloff)

· "No Time Constant" mode (10 μs to 20 μs update rate)

· Auto-gain, -phase, -reserve and -offset

· Two 16-bit DACs and ADCs

· Internal or external reference

· GPIB and RS-232 interfaces