This station was modified from a dm16 digitizer to a dm24 on 20060428. The result is greater amplitude resolution and dynamic range. There are now only 3 channels for each broadband (HH?) instead of the previous 6 channels (i.e. BL? channels are no longer necessary). The digitizer gain is thus changed from about 6.3 microVolts/count to about 1.127 microVolts/count.

Station Code: LPAR

Channels: HHZ, HHN, HHE, BLZ, BLN, BLE

Network Code: NM

Location: 35.6019 -90.3002 66.5

Nearest town: Lepanto, AR

Opened: November 12, 1999

Sensor Type: CMG40T

Nominally flat to velocity 30 seconds to 50 Hz.

Sensor Serial Number: T4232

Taps: Low gain, non-differential

Vertical

Poles (Hz)Zeros (Hz)
-23.56e(-3) +- 23.56e(-3)i0
-500
159

Normalization: -0.314

Horizontal:

Poles (Hz)Zeros (Hz)
-23.56e(-3) +- 23.56e(-3)i0
-500
159

Velocity Response:

Vertical: 793 V/m/s

North: 789 V/m/s

East: 802 V/m/s

Digitizer Type: DM16

Digitizer Serial Number: T4232/D0012

Digitizer resolution: 16 bits

gain (microV/count)

BLZ: 205.2

BLN: 205.6

BLE: 204.1

HHZ: 6.349

HHN: 6.409

HHE: 6.396

Sample rates:

HH? 100 sps

BL? 20 sps