Service manual

Page 16
SVR-200 Service Manual
Mobile COR polarity: Determines if the COR signal from the mobile is active high or active low.
Radio Type: Select either conventional or trunking. If a trunking mobile is selected, the SVR-200 will go through
the voice channel acquisition procedure during portable-to-base repeat mode.
On-air polarity: Select either active high or active low. This line is used to monitor the local mobile PTT for local
mic repeat on conventional radios. On trunking radios, it is also used to determine if the mobile is actually
transmitting.
TX Audio: If the mobile transmit audio output from the SVR-200 is connected after pre-emphasis in the mobile,
select Flat response. If connected before pre-emphasis or to the mic input, select De-Emp.
RX Audio: If the receive audio coming from the mobile is connected to the discriminator or before de-emphasis,
select Flat response. If connected after de-emphasis, select Pre-Emp.
Lock Tone: Select either 682.5, 832.5 or 847.5 Hz. All units in the system must have the same lock tone frequency.
Local mic repeat: Enables or disables the local mic repeat function; if enabled, ensure that the on-air polarity input
is correctly configured.
Courtesy Blip: (Firmware version 3.02 & above) Enables or disables the courtesy tone at the end of each
portable-to-base transmission. The tone verifies the handheld is within range of the repeater and transmission was
successful. It also serves to notify other handheld users that the channel is clear for use.
Pri-sampling: Enables or disables the pri-sampling feature of the SVR-200. If used in multi-vehicle
applications, this must be enabled for proper operation. During base-to-portable repeat mode, the SVR-200
transmitter will switch to receive mode to check for other repeaters or handheld activity. If another repeater is
detected (carrier without/wrong tone) the repeater will cease activity to prevent radio “collisions”. If handheld
activity is detected (carrier & correct tone) the SVR-200 will switch to portable-to-base repeat mode.
Sampling rate: If pri-sampling is enabled, this selects the sampling interval. The range is 0.25 seconds to 2.5
seconds in .25 second increments. The higher this setting, the longer the handheld operator must wait before
speaking after pressing PTT during base-to-portable repeat mode, since the repeater may still be in transmit mode
(there is no delay if the repeater is idle). If the interval is too short, some users may complain about the “chop”
that is heard in the handhelds.
Transfer
Send: Downloads the current configuration to the repeater. The program will prompt you to make the FY-1
connection before downloading. Download takes approximately 5 seconds.
Receive: Uploads the current data from the repeater. The program will prompt you to make the FY-1 connection
before uploading. Upload takes approximately 4 seconds.
Comm Port: Selects the serial port to use for uploading and downloading between the PC and the SVR-200. Comm
ports 1-4 are supported.
Help
Help is available at any time by clicking the left mouse button on the HELP icon on the right side of the tool
bar. The help is context sensitive and will depend upon where the cursor is located on particular menu displayed.