D240x detector AutoRecording with an iRiver music player/recorder Stereo audio patch cable (supplied with iRiver) iRiver with line in jack

Setting up to AutoRecord Set speaker select switch to TIME EXP to avoid any heterodyne interference during recording. Leave on “NORMAL” setting. (This unit has the switch disabled to avoid inadvertently changing this setting.) Use HIGH gain for most situations to maximize range reception of bats; use low gain in situations when the detector might be very close to the bats. Connect stereo patch cable to TAPE jack. Turn on to lowest volume setting.

Use a LOW trigger level for most recording situations. The HIGH setting may be useful in situations with much insect noise. Note that this would limit the triggering to only bats that make a close approach to the detector. Set trigger setting to AUTO. The HF setting triggers the detector with any high frequency sound, including audible bats. Use this setting unless you desire to limit detection to a narrow bandwidth based on the heterodyne frequency selected. Use 1.7 sec recordings for most recording sessions. This will provide sufficient calls and sequence data for most bat species, while optimizing the number of passes recorded.

With the iRiver powered up, and the record window showing in the display, push the record button (the one with the red dot) to begin the recording session. The time display should show 00:00:00 while waiting for a signal, and count up in seconds while recording. You should see it go back to 00:00:00 after receiving an autotriggered signal. Set in a location to receive bat calls, away from ambient noise sources, directed toward a flyway, but not directly in a flyway as an obstacle. Connect to line-in jack on iRiver. If recording overnight, use fresh batteries in both devices. Many thanks and much appreciation to Greg Falxa, Cascadia Research, for testing various audio devices and developing this method.

Hold this button down until the iRiver turns on. Recording settings to use: Mono 44 kHz 160 kbs Ext line-in connection 1 sec autosync

If the iRiver does not power up into record mode, hold this button down until the mode window appears. Jog the joystick right or left to select LINE IN, then push to select.

Hold the joystick button down until display changes to the General Settings window. Changing settings

Then jog the joystick to right until the Control settings show...

...and push joystick to select.

Jog down down to LINE-IN RECORDING MODE setting and select by pushing down joystick.

Click the joystick to switch from stereo to mono. Jog down to sample rate and jog right to 44.1 kHz. Jog down to bit rate and jog setting to 160 kbps.

Push this button to return to control menu.

Jog down to LINE-IN RECORDING VOLUME setting, and push joystick to select.

Jog right or left to select 48.

Push this button to return to control menu.

Jog down to LINE-IN AUTO SYNC setting, and push joystick to select.

Jog right or left to select 1 sec.

Push this button to return to control menu.

Jog down to LINE-IN/EXT. MIC, and push joystick to select.

Jog left or right to select Line-in, and push joystick to select.

Push this button three times to return to record mode.

H320 User’s Guide

Controls and Components: The H320: Back : Contains the ID and MFWP tags, but no controls or battery compartments.

Right side: This side contains the hold button; to use it, pull the button down. Orange color will show under the button to let you know that it is in use. While in hold mode, you will not be able to use any of the buttons. This is useful to use when leaving overnight (or when carrying the H320 in pockets or bags) to insure that recording isn’t interrupted if the case shifts. To remove from hold mode, push the button back up.

Example of H320 in hold mode:

Left side: This side contains the microphone button, which is not used for bat recording.

Top of the H320: place the patch cord (with the other end attached to the bat detector) in the “Line In” spot, which is second from the right, below. If recording manually, headphones are placed in the farthest left spot.

Bottom of the H320: when downloading, place the USB cord in the spot marked “DATA,” which is farthest left below. Charging cords are placed in the yellow, round spot on the farthest right below. Make sure you have the correct charging attachments!

Controls: “On” Press to turn on or to save settings. “Off” Hold to turn off or use to navigate back through screens. Also use to cancel settings changes. “NAVI” This is essentially a select button; use it to select options and navigate through screens/pages. “Left arrows, right arrows, and +, and –“ Use this to navigate left, right, up, and down within screens. “A-B” and “●” buttons are not used for bat recording.

Controls

When powering up, this screen will come up

before the home/main screen comes up.

While navigating, use the arrow buttons (right arrow to continue through menus, left arrow to go back) for most types of menus, but while changing settings on menus with a grey wrench icon (like the Trigger settings below),

the “On” button must be used to return to the previous menu in order for the new settings to take effect. If the “Off” or left arrow buttons are used instead, an icon will come up, “Cancelled,” and the old settings will remain.

Checking Settings: Preliminary Troubleshooting: Correct setting for “Recording Settings”: If you encounter difficulties in the field, first make sure that all the settings are correct. One small change in a setting will often thwart all efforts to record. To navigate there, go to “Settings” on the main page,

and “Recording Settings” on the second page,

then navigate down through the settings using the guide below.

Format: MPEG Layer 3 Encoder, Bitrate: 160 Kbit/s Frequency: 44.1 kHz Source: Line In Channels: Mono File Split Options: Nothing to set here Prerecord time: 1s Clear Recording Directory: Don’t use this unless you want to erase files! Clipping light: Nothing to set here Trigger: Use arrows to navigate up and down and to change settings (use left and right arrows here) if needed. Settings are, from top to bottom: Repeat, Stop, 1s, -25db, 0s,-40db, 2s, 1s. If settings need to be changed, make sure you return to the “Recording Settings” menu using the “On” button, not the left arrow or the “Off” button or your changes will not be recorded! Automatic Gain Control: Nothing to set here AGC Clip Time: Nothing to set here

Setting the Recording Directory: Setting the recording directory to use the “BATS” folder is simple (if the directory isn’t specified, files go to the “Audio” folder in RECORD and can be retrieved from there). Select “Files” on the main page,

then “RECORD,”

then HOLD the “NAVI” button down on the “BATS” folder

When the new screen comes up,

navigate down to “Set as Recording Directory” and press “NAVI” again to select. Now all the files will be there for easy retrieval on the computer.

Recording with the H320: From the main page, select “Recording,”

bringing up this page;

If everything is attached and working properly, the audio bars will begin moving left to right as sound comes from the bat detector. Test the bat detector and the connections by rubbing your fingers together in front of the detector and making sure the H320 is receiving the sound. To begin recording, press the “On” button. The file names will come up if it is recording; file names begin with R- and are followed by LIN (the source) and about 10 numbers. An example of a file recorded via microphone (MIC) is below:

Once you choose “Record” and arrive at the recording screen, you must press the “On button to begin recording files!!! Even if the audio bars are moving, files are not being recorded until file numbers come up in the line titled Filename. See below: An H320 correctly recording files:

The filename of the file being recorded above is mp3. An H320 not recording files:

Follow-up: Downloading Files and Charging the H320 Charging The H320s have internal and permanent batteries, so they must always be charged via trucks or wall circuits; they also need to be charged after every use. There are car and wall chargers available, but many come with small adaptor pieces, so be sure that you have the correct charging setups when charging.

Use of “.cfg” files: This is to be discussed, but these are templates that will allow multiple variations of settings to be used or transferred between H320s. This can assist when working with an H320 that doesn’t work and one that does; if the incorrect setting can’t be found, importing the working H320’s setting might assist. Downloading The files can be found by opening “My Computer” and looking in the correct folder in the H320 device. The “Bats” folder will be in the “Record” folder as it is on the device. Follow the 2009 DivMon protocol for downloading, attibution, and storage.