PM 6685

8in, 8out, balance & unbalance
PM 6685 is a high-performance data acquisition analyzer with high bandwidth and low distortion.

8-channels input and 8-channels output support both balanced and unbalanced.

Suitable for vehicle-mounted multimedia acoustic testing.

Specifications

Specifications

AI Specifications

AI Parameters
ADC Precision	24 Bit
ADC Type	Δ-Σ
Sample Rate Range Hz	1k - 192k
FIFO	1024
Mode Of Data Transmission	DMA
Input Range	+/- 170Vp
Gain Error	+/- 0.01dB
Input Impedance	Unbalance：300ohm ，600ohm ，100kohm Balance：300ohm ，600ohm ，200kohm
Flatness	20Hz - 20kHz，192kS/s，＜+/-0.008 dB

AI Idle Noise (uVrms)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	1.3	2.0	3.0
ps：[1]Short circuit source impedance < 50 ohm，Working temperature 23±5℃ [2]±1Vp Acquisition Range [3]AC coupling

AI SNR (dB)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	125	122	119
PS：[1]Single-Ended Input, AC coupling, input signal 1kHz sine wave, 2.5Vrms, output impedance 20ohm, Input impedance 100kohm [2]Bandwidth, 22,4k、45k、90k [3]Linear weighting [4]AC coupling

AI Dynamic Range (dB)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	115	110	107
PS：[1]Single-Ended Input, AC coupling, input signal 1kHz sine wave, 2.5Vrms, output impedance 20ohm, Input impedance 100kohm [2]Bandwidth, 22,4k、45k、90k [3]Linear weighting [4]Hanning window [5]AC coupling

AI, fs=48kS/s, Typical, FFT, 2.5Vrms

AI, fs=96kS/s, Typical, FFT, 2.5Vrms

AI, fs=192kS/s, Typical, FFT, 2.5Vrms

AI THD+N (dB)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	-108	-102	-95
PS：[1]Single-Ended Input, AC coupling, input signal 1kHz sine wave, 2.5Vrms, output impedance 20ohm, Input impedance 100kohm [2]Bandwidth, 22,4k、45k、90k [3]Linear weighting [4]AC coupling

AI Cross Talk (dB)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	-118	-118	-115
PS：[1]Single-Ended Input, AC coupling, input signal 1kHz sine wave, 2.5Vrms, output impedance 20ohm, Input impedance 100kohm [2]Bandwidth, 22,4k、45k、90k [3]Linear weighting [4]AC coupling

AO Specifications

AO Parameters
DAC Precision	24 Bit
Sample Rate Hz	1k - 192k
Output Range	+/- 10.5Vrms（Unbalance），+/- 21Vrms（Balance）
Gain Error	+/- 0.01dB
Output Impedance	Unbalance：20ohm，50ohm，75ohm，100ohm，600ohm Balance： 40ohm，100ohm，150ohm，200ohm，600ohm
Maximum output power of external resistor	4ohm 1.56w ; 8ohm 1.125w
Flatness	20Hz - 20kHz，192kS/s，＜+/-0.008 dB

AO Idle Noise (uVrms)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	1.3	1.7	2.5
PS：[1]Data acquisition device impedance greater than 1 Mohm, Operating temperature of 23±5°C [2]AC coupling

AO SNR (dB)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	125	122	119
PS：[1]Differential Output, AC Coupling, Output signal amplitude of 2.5Vrms (Root Mean Square), Output impedance of 20 ohms, Input impedance of 100 Kohms [2]Bandwidth, 22,4k、45k、90k [3]Linear weighting [4]AC coupling

AO Dynamic Range (dB)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	119	117	115
PS：[1]Differential Output, AC Coupling, Output signal amplitude of 2.5Vrms (Root Mean Square), Output impedance of 20 ohms, Input impedance of 100 Kohms [2]Bandwidth, 22,4k、45k、90k [3]Linear weighting [4]AC coupling

AO THD+N (dB)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	-106	-101	-93
PS：[1]Differential Output, AC Coupling, Output signal amplitude of 2.5Vrms (Root Mean Square), Output impedance of 20 ohms, Input impedance of 100 Kohms [2]Bandwidth, 22,4k、45k、90k [3]Linear weighting [4]AC coupling

AO Cross Talk (dB)
Sample Rate	fs=48kS/s	fs=96kS/s	fs=192kS/s
Typical Value	-125	-120	-118
PS：[1]Differential Output, AC Coupling, Output signal amplitude of 2.5Vrms (Root Mean Square), Output impedance of 20 ohms, Input impedance of 100 Kohms [2]Bandwidth, 22,4k、45k、90k [3]Linear weighting [4]AC coupling