Specifications

5.2. Setting the Beeper/Vibrator
The BHT_SetSysSettingDW (DWORD dwCtrlCode, DWORD dwSysParam)
and BHT_GetSysSettingDW (DWORD dwCtrlCode, DWORD *pdwSysParam) functions write or read the
beeper/vibrator parameters as specified below.
Parameter
name
Type R/W
Control code
(dwCtrlCode)
Parameter value
(dwSysParam)
Default
Validating
timing
Rumble
device
DW R/W
BHT_BEEP_VIB
_SELECT
BEEP_SELECT
: Beeper
VIB_SELECT
: Vibrator
BEEP_SELECT | VIB_SELECT
: Beeper and vibrator
BEEP_SELECT
First sound
after setting
Beeper
volume
(*1)
DW R/W
BHT_BEEP_VIB
_VOLUME
0: OFF
1 (Lowest) to 5 (Highest)
5
First sound
after setting
Key clicks
(*2)
DW R/W
BHT_BEEP_VIB
_KEY
0: OFF
1 (Soft)
2 (Loud)
2
First sound
after setting
Screen taps DW R/W
BHT_BEEP_VIB
_TAP
0: OFF
1 (Soft)
2 (Loud)
2
First sound
after setting
Trigger
switch clicks
(*3)
DW R/W
BHT_BEEP_VIB
_TRGKEY
CLICK_SOUND_OFF: Prohibit
CLICK_SOUND_ON: Permit
CLICK_SOUND_OFF
First sound
after setting
(*1) This setting is effective only when the value 0, 1, or 2 is specified to the frequency in the beeper
start/stop functions (BHT_StartBeep or BHT_StartBeeperOnly).
(*2) This excludes the pressing of magic keys assigned to the trigger switch and the [SCAN] key when
the "trigger switch click sound" is OFF.
(*3) This is effective only when pressing magic keys assigned to the trigger switch and the [SCAN] key.
The rumble device specification above takes effect when the beeper/vibrator is driven:
(1) by the BHT_StartBeep function.
(2) due to low battery warning, in conjunction with the "Battery voltage has lowered." or "Charge the
Battery!" message.
(3) upon completion of barcode reading.
The MessageBox, MessageBeep and PlaySound Windows CE standard APIs and Windows CE standard
warning and notification sounds are enabled by the audio function, and therefore there is no influence on
settings made with the above functions.
The sound pattern of the key clicks, screen taps, and trigger switch clicks is as follows:
ON-duration: 10 ms
Frequency: 1396 Hz
Volume : Loud, Soft
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