The SR4x00 (4000/4500) Stripe is the software representation of a physical SR4x00 (SR4000/4500) of the AKG WMS4x00 (WMS4000/4500 - Wireless Microphone System). The SR4x00 is a Stationary Receiver which receives the RF signal from a HT4x00 (Handheld Transmitter) or PT4x00 (Pocket Transmitter).
Figure: SR4000 Stripe
Each SR4x00 Stripe indicates the following parameters:
Stripe Header: The device type is displayed at the top of the Stripe Header, in this case "SR4500" (if the device is a SR4000 "SR4500" is displayed). The user can choose between three display options (name, RF frequency, RF preset) at the View menu.
Transmitter (HT4x00, PT4x00) Indications:
RPT (Rest Play Time) Label - Remaining Battery Capacity: Indicates the exact remaining capacity in hours of the dry or rechargeable batteries like "6.5 h" (6.5 hours), or BP 4000 (battery pack) inside the transmitter. If the transmitter is switched off the Rest Play Time Label shows "-.-". The background of the RPT Label will change from gray to red if RPT drops below 1 hour. If the RPT drops below 24 minutes the RPT Label starts to blink red to indicate the small amount of remaining capacity at the battery (can’t be set – only indication).
Battery Meter: As long as all segments are green, the battery is at full capacity. Segments will disappear as battery capacity diminishes. The remaining segments will change from green to yellow (if RPT is smaller than 3 hours and finally to red when the remaining capacity drops below one hour. If the RPT drops below 24 minutes the RPT Label starts to blink red to indicate the small amount of remaining capacity at the battery. If transmitter is switched off all segments are black. (can’t be set – only indication).
Mic Gain Label: Indicates the current transmitter gain setting in dB (can’t be set – only indication).
RF Level Meter: Indicates the strength of the transmitter RF signal in dB (decibel from -110 dB to -50 dB). The RF level meter shows the greater RF level of the two RF antennas of the SR4x00. As long as the RF level exceeds the selected Squelch Level (or Squelch threshold), the RF level meter will remain blue.
If the RF level drops below the Squelch Level, the upper part of the RF Level Meter will turn red for three seconds indicating that the RF level dropped under the Squelch Level. The lower part of the RF Level Meter indicates the RF level and is shown blue. If there was once a transmitter linked to the SR4x00, meaning that the SR4x00 has received a valid RF Signal at its selected RF Frequency and the transmitter is turned off, the physical SR4x00 will show "TX OFF" at its display. To indicate the state that the SR4x00 lost the link to the transmitter, the RF Level Meter shows "TX OFF" in red.
Figure: RF Level Meter - upper part turns red (approx. 3 seconds) if RF level drops below the Squelch Level
RF Low LED: The RF Low LED above the RF Level Meter will remain lit permanently red if the physical SR4x00 detects RF Low and shows "RF Low" at its display. That means that the RF level dropped below the Squelch Level for a certain time. User can reset the RF Low LED and the warning state at the SR4x00 with the Clear Button (see below) or the at the physical device itself.
Squelch Arrow: The Squelch Arrow at the right side of the RF Level Meter indicates the current Squelch setting. If the SR4x00 uses Tone Code Squelch (TCSQ), the Squelch Arrow will not be displayed. Instead "TCSQ" is displayed. With a right-click on the Squelch Arrow control, a context menu will open where the user can set the Squelch. If the user selects a Squelch Level from -80dB to -100db the Squelch is set to this level and Tone Code Squelch is not used. If the user selects "TCSQ" then Tone Code Squelch is used.
Figure: Squelch Arrow context menu opened
AF Level Meter: Indicates the level of the received audio signal (AF level) from the transmitter in dB (decibel from -30 dB to +10 dB). If the transmitter is muted with the MUTE switch on the transmitter the AF Level Meter will show no AF level and "TX MUTE" will be shown via the AF Level Meter.
Figure: AF Level Meter is indicating that the HT or PT muted switch is active with displaying "Muted".
AF Clip LED: The AF Clip LED indicates the AF clip state of the SR4x00. The "AF Clip" LED is lit red if the AF level (audio level) exceeds the clipping threshold until it is reset. User can reset the AF Clip LED and the warning state at the SR4x00 with the Clear Button (see below) or the at the physical device itself.
Clear States Button: User can reset the RF Low LED, the AF Clip LED and the states at the physical SR4x00 with a click on the Clear States Button. All states at the physical SR4x00 will be cleared except the "TX OFF" warning. The Clear Button is only enabled if there is a state to clear. If there is no state to clear the Clear State Button will be disabled. At the Product Panel or the Master Control Panel all RF Low LEDs, the AF Clip LEDs and states of all physical SR4x00s can be cleared with the Clear All States Button. The clearing of states is supported only for SR4000 Firmware Version 1.22 and all SR 4500 firmware versions (Unsupported Features)!
Mute Button: A click at the Mute Button mutes the audio output of the SR4x00. The button is dark gray in normal operation (NOT MUTED) and will turn red when you press it. If there is no transmitter linked to the SR4x00 the Mute Button is always red because audio mute is always active at the physical SR4x00. The Mute Button is disabled beause the SR4x00 can’t be unmuted if there is no linked transmitter connected to it.
On/Off Button: Switches the SR4x00 ON and OFF. If the SR4x00 is ON then the button is lit green and labeled "On". If the Stripe is OFF then the button is gray and labeled "Off".
Not all Features of the SR4000 Stripe are supported at all SR4000 Firmware versions. Please refer to the Unsupported Features section.